AA	Ann Arbor Railroad
AALX	Advanced Aromatics LP
AAMX	ACFA, Arrendadora de Carros de Ferrocarril,S.A.
AAR	Association of American Railroads
AATX	Ampacet Corp.
AB	Akron Barberton Cluster Railway 
ABB	Akron & Barberton Belt Railroad 
ABBX	Abbott Labs
ABIX	Anheuser-Busch, Incorporated
ABL	Alameda Belt Line
ABOX	TTX Company
ABRX	AB Rail Investments, Incorporated
ABWX	Asea Brown Boveri, Incorporated
AC	Algoma Central Railway Incorporated
ACAX	Honeywell International Incorporated
ACBL	American Commercial Barge Lines
ACCX	Consolidation Coal 
ACDX	Honeywell International Incorporated
ACEX	Ace Cogeneration Company
ACFX	General Electric Rail Services Corporation
ACGX	Suburban Propane LP
ACHX	American Cyanamid 
ACIS	Algoma Central Railway Incorporated
ACIX	Great Lakes Chemical Corporation
ACJR	Ashtabula Carson Jefferson Railroad 
ACJU	American Coastal Lines, Joint Venture, Incorporated
ACL	CSX Transportation, Incorporated
ACLU	Atlantic Container Line Limited
ACLX	American Car Line Company
ACMX	Voith Hydro, Incorporated
ACOU	Associated Octel Company, Limited
ACPX	Amoco Oil Company
ACPZ	American Concrete Products 
ACRX	American Chrome and Chemicals Incorporated
ACSU	Atlantic Cargo Services AB
ACSX	Honeywell International Incorporated
ACSZ	American Carrier Equipment
ACTU	Associated Container Transport (Australia) Limited
ACTX	Honeywell International Incorporated
ACUU	Acugreen Limited
ACWR	Aberdeen, Carolina and Western Railway
ACWZ	Union Pacific Railroad 
ACXU	Atlantic Cargo Services AB
ACXX	Anderson Columbia Company, Incorporated
ACY	Norfolk Southern Railway 
ACZX	A C Railroad Service 
ADBF	Adrian and Blissfield Railroad 
ADCU	Flexi-Van Leasing, Incorporated
ADMX	ADM Transportation Company
ADN	Arkansas Louisiana and Mississippi Railroad 
ADRX	Addeleston Recycling Corporation
ADSX	Andrew Merrilees Limited
AEC	Atlantic and East Carolina Railway 
AECX	Associated Electric Cooperative Incorporated
AEFR	Aurora Elgin and Fox River Electric
AEIX	Alan Eslisk
AEIZ	Farrell Lines Incorporated
AEPU	American Lines Incorporated
AEPX	American Electric Power Service
AERC	Albany and Eastern Railroad 
AESX	General Electric Rail Services Corporation
AEVX	AKZO Coatings Incorporated
AEX	The Andersons
AF	Alabama and Florida Railway
AFCU	Afram Lines Incorporated
AFCX	Atel Capital Equipment Fund
AFCZ	Afram Lines Limited
AFIU	ABS Industrial Verification, Incorporated
AFIX	FIXCOR Industries Incorporated
AFIZ	Agmark Foods
AFLR	Alabama and Florida Railroad, Incorporated
AFPX	Honeywell International Incorporated
AFRX	AF Railway Industries Incorporated
AFSX	Astoria LLC
AG	Galveston Railroad, L.P.
AGCR	Alamo Gulf Coast Railroad
AGCX	Procor Limited
AGEX	NOVA Chemicals Limited
AGHX	Agrium U.S. Incorporated
AGIX	AGRI Industries
AGLF	Knoxville and Holston River Railroad 
AGLX	Andrews Petroleum, Incorporated
AGMX	Terra Nitrogen Limited Partnership
AGPX	Ag Processing, Incorporated
AGR	Alabama and Gulf Coast Railway LLC
AGRD	A and G Railroad, L.L.C.
AGRX	Agrifos LLC
AGS	Alabama Great Southern Railroad 
AGYX	Centrex Construction Products Incorporated (American Gypsum)
AHCX	Arcadian Corporation
AHMX	Altos Homos de Mexico SA de CV
AHW	Fox Valley and Western, Limited
AHWZ	Fox Valley and Western, Limited
AIDU	Albermarle Corporation
AIEU	Aviation Import Export Incorporated
AIIZ	III Transportation
AINX	TTX Company - Acorn Division
AIPX	Atlas Iron Processors, Incorporated
AIRX	American International Rail Services LLC
AITU	Western Intermodal
AJCU	Australia Japan Container Line
AJPX	IMC Chemicals
AKDN	Acadiana Railway 
AKFX	AKF Corporation
AKMD	Arkansas Midland Railroad 
AKMX	HELM Financial Corporation
AKZX	AKZO Nobel Chemicals Incorporated
AL	Almanor Railroad 
ALAB	Alabama Railroad 
ALAX	Equistar Chemicals LP
ALCX	Alcan Smelters and Chemicals, Limited
ALEX	AGRI Industries
ALLX	Alliance Machine Company
ALLZ	Alliance Shippers Incorporated
ALM	Arkansas Louisiana and Mississippi Railroad 
ALMX	Trinity Rail Management Incorporated
ALNX	Alberta Government
ALPX	Alberta Government
ALQS	Aliquippa and Southern Railroad 
ALRX	A and R Leasing, Limited Liability Corporation
ALS	Alton and Southern Railway 
ALSX	Albis Canada, Incorporated
ALTU	VTG Vereinigte Tanklage U Transportmittel GMBH
ALTX	Southern Illinois Railcar, Incorporated
ALUX	Alumax of South Carolina, Incorporated
ALY	Allegheny and Eastern Railroad Incorporated
AM	Arkansas and Missouri Railroad 
AMAX	AMAX Coal Company
AMBU	Amber Line, Incorporated
AMBX	American Boiler Works, Incorporated
AMC	Arkansas Louisiana and Mississippi Railroad 
AMCX	BP Amoco Chemical Company, Chemical Division
AMCZ	Interbulk, Incorporated
AMEX	Allied Entreprises
AMFU	Amphibious Container Leasing Limited
AMGX	AMG Resources Corporation
AMHR	Landisville Railroad, Incorporated
AMIU	American Marine Industry
AMIX	Railcar Leasing Specialists, Incorporated
AMIZ	American Marine Industries
AMLX	American Railcar Company
AMMU	Hyundai
AMMX	Kentucky-Tennessee Clay Company
AMNX	American Railcar Leasing Partners
AMOX	Amoco Oil Company
AMOZ	American Oil Company
AMPX	General Electric Rail Services Corporation
AMRX	Consolidated Oil and Transportation Company, Incorporated
AMRZ	American Chassis Leasing Incorporated
AMSX	AllTrans Management Services Corp
AMTK	Amtrak (National Railroad Passenger Corporation)
AMTZ	Amtrak (National Railroad Passenger Corporation)
AN	Apalachicola Northern Railroad
ANAU	Alliance Navigation Line, Incorporated
ANAX	General Electric Rail Services Corporation
ANCX	Norit Americas Incorporated
ANDX	Andesite Rock Company
ANKX	A and K Railroad Materials, Incorporated
ANR	Angelina and Neches River Railroad
ANSX	Ansco Investment Company
ANY	Athabasca Northern Railway Limited
AOCU	Associated Octel
AOCX	Aluminum Company of America
AOIX	Marathon Ashland Petroleum Company
AOK	Arkansas-Oklahoma Railroad Incorporated
AOUX	Alberta and Orient Glycol Company, Limited
APA	Apache Railway 
APAX	Cimentos Apasco S.A. De C.V.
APCU	American President Lines, Limited
APCX	Allied Lime Company
APD	Albany Port District
APEX	Apex Tank Car Line
APHX	Air Products Polymers LP
APIX	The Commonwealth Plan, Incorporated
APLU	American President Lines, Limited
APLX	APL Land Transport Services, Incorporated
APLZ	American President Lines, Limited
APMU	Maersk Lines
APMX	Air Products Manufacturing Company
APNC	Appanoose County Community Railroad
APOX	Albama Power Company
APRX	Air Products and Chemicals, Incorporated
APSX	Arizona Public Service Company
APTX	Air Products and Chemicals, Incorporated
APWX	Appalachian Power Company
APXX	Alberta Prairie Rail Excursions
AQCX	Aqua-Chem Incorporated, Cleaver Brooks Div.
AR	Aberdeen and Rockfish Railroad 
ARA	Arcade and Attica Railroad Corporation
ARC	Alexander Railroad 
ARCX	Arizona Rail Car, Incorporated
ARDP	Union Pacific Railroad 
ARDU	CATU Containers S.A.
ARE	A. and R. Line Incorporated
AREX	Aeropres Corporation
ARGX	Associated Railcar Incorporated
ARHU	CATU Containers S.A.
ARHX	Arch Mineral Corporation
ARIX	General Electric Rail Services Corporation
ARJX	Arch Chemicals
ARMH	Union Pacific Railroad 
ARMN	Union Pacific Railroad 
ARMX	American Rail and Marine Corporation
ARMZ	Armasal Line
ARN	Alberta RailNet Incorporated
AROX	General American Transportation Corporation
ARPX	Amoco Oil Company
ARR	Alaska Railroad Corporation
ARRX	Anthracite Railroads Historical Society, Incorporated
ARSX	Aristech Chemical Corporation
ART	American Refrigerator Transit Company
ARTU	CATU Containers S.A.
ARW	Arkansas Western Railway 
ARWX	Alabama River Woodlands, Incorporated
ARZC	Arizona and California Railroad 
ASAB	Bay Line Railroad, L.L.C.
ASCX	Armco Steel Company, L.P.
ASGX	Ash Grove Cement Company
ASHU	Maritainer France SA
ASHX	American Soda, LLP
ASR	Allegheny Southern Railroad Incorporated
ASRX	Domino Sugar Company
ASRY	Ashland Railway, Incorporated
ASRZ	Agri/Share Cooperative
ASTX	Asarco Incorporated
ATCX	Southern Illinois Railcar, Incorporated
ATEX	Asplundh Tree Expert Company, Railroad Div.
ATGU	Burlington Northern and Santa Fe Railway 
ATGX	ATEL Leasing Corporation
ATIU	Societe Auxillaire De Transport Et D'Industries
ATLT	ATandL Railroad 
ATLU	American Marine Industries
ATLX	Atlas Machine and Iron Works, Incorporated
ATLZ	American Marine Industries
ATMX	U.S. Dept. of Energy, Albuquerque Operations Office
ATOU	Atochem
ATSF	Burlington Northern Santa Fe Railroad
ATTX	TTX Company
ATW	Atlantic and Western Railway
AUBX	U.S. Plastic Lumber Limited
AUG	Augusta Railroad Corporation
AVL	Aroostook Valley Railroad 
AVLU	Allied Van Lines
AVR	Allegheny Valley Railroad 
AWCX	Airco Welding Products
AWDX	Atlantic of New York, Incorporated
AWIX	Albright and Wilson Americas Incorporated
AWP	CSX Transportation, Incorporated
AWW	Algers, Winslow and Western Railway
AWXX	East Carbon Development 
AWZZ	McCloud Railway 
AXCU	Ace Transportation 
AXXZ	Agricultural Express of America
AZCR	Arizona Central Railroad Incorporated
AZCX	Azcon Corporation
AZER	Arizona Eastern Railway 
AZEX	Arizona Electric Power Coop.,Incorporated
AZMX	Arizona Railway Museum
BADX	Baden Investment Company
BAEX	The Andersons
BANU	Bank Winter and Co Aktiengesellschaft
BAPX	Bay Area Piggyback, Incorporated
BAR	Bangor and Aroostook Railroad 
BARU	Barons Leasing Corporation
BARZ	Bangor and Aroostook Railroad 
BASX	Bay State Milling Company
BAWX	Babcock and Wilcox Company
BAYL	Bay Line Railroad, L.L.C.
BAYU	Mobay Chemical Corporation
BAYX	Bayer Corporation
BB	Buckingham Branch Railroad 
BBCX	ABB Power Generation, Incorporated
BBRX	Bombardier Incorporated, Transportation Equipment Group
BBSZ	Barbar Steamship Lines, Incorporated
BBTU	Bress Bulk International Bulk Transport and Consulting
BCAX	Blue Circle, Incorporated
BCCX	Border Chemical Company, Limited
BCDX	Borden Chemical Incorporated
BCGX	Bay Cities Gas Corporation
BCH	Southern Railway of British Columbia, Limited
BCIT	BC Rail Limited
BCIU	Bay Cities Leasing Company
BCIX	Blue Circle, Incorporated
BCJU	Bay Cities Leasing Company
BCLR	Bay Colony Railroad Corporation
BCLU	Bibby Bros Company
BCMX	Bullet Concrete Materials Company
BCNE	Canadian National Railway
BCOL	BC Rail Limited
BCRX	General Electric Rail Services Corporation
BCRY	Cando Contracting Limited d/b/a Barrie-Collingwood Railway
BCTZ	Boise Cascade Corporation
BCVX	West Coast Express
BCWX	Union Tank Car Company
BCYU	Bay Cities Leasing Company (Union Pacific)
BDCX	Anchor Glass Container
BDLX	BDL Company
BDMX	Blue Diamond Mining, Incorporated
BDNX	Baroid Drilling Fluids, Incorporated
BDRV	Belvidere and Delaware River Railway Company, Incorporated
BDTL	Ballard Terminal Railroad 
BDW	Bad Water Line
BECX	FMC Corporation
BEEM	Beech Mountain Railroad Corporation
BELX	Belle Haven Foods, Incorporated
BENX	Investors Property Service
BFCX	Berwick Freight Car Company
BFGX	Oxy Vinyls, LP
BFHU	Bailee Freight Services Limited
BFIX	Bethlehem Steel Corporation
BFRR	Buffalo Ridge Railroad, Incorporated
BFSU	Bailee Freight Services Limited
BGEX	GATX Capital Corporation
BGFX	Barnabas Group Foundation
BGKU	Schering AG
BGSX	Strata Corporation
BH	BandH Rail Corporation
BHCU	Bridgehead Container Service
BHP	BHP Nevada Railroad 
BHTX	Bernhart Crane and Rigging Company
BIAX	Ocala Recycling Recycling
BIDU	Universal Bulk-Handling Limited
BIGX	Air Liquide America Corporation
BIRR	Bellingham International Railroad LLC
BISX	Brandenburg Industrial Service Co
BITY	Penn Eastern Rail Lines Incorporated
BJGX	B. J. Gas Supply, Incorporated
BJHX	BJ Titan Services Company
BJOX	Citicorp Railmark, Incorporated
BJRY	Burlington Junction Railway
BKLU	Bank Line Limited
BKRR	Batten Kill Railroad 
BKRU	Baker Tanks
BKTY	Union Pacific Railroad 
BLCX	The Commonwealth Plan, Incorporated
BLE	Bessemer and Lake Erie 
BLKM	Black Mesa and Lake Powell
BLKU	Bulkhaul Company, Limited
BLKZ	Mid-American Intermodal Equipment Corporation
BLMR	Blue Mountain Railroad, Incorporated
BLOR	Bloomer Line
BM	Boston and Maine Corporation
BMAZ	Transamerica Leasing (Better Asset Management)
BMCX	Bluewater Michigan Chapter, Incorporated
BMDZ	Minnesota, Dakota and Western Railway 
BMH	Beaufort and Morehead Railroad Co
BMIZ	Burlington Motor Carriers
BML	Belfast and Moosehead Lake Railroad
BMRG	Blue Mountain and Reading Railroad
BMS	St. Lawrence and Atlantic Railroad 
BMSX	Bemis Company, Incorporated
BMZ	Boston and Maine Corp
BN	Burlington Northern Santa Fe Railway 
BNAU	Burlington Northern and Santa Fe Railway 
BNAZ	Burlington Northern and Santa Fe Railway 
BNFE	Burlington Northern Santa Fe Railway 
BNIU	British and Irish Steam Packet Company
BNML	Burlington Northern (Manitoba) Limited
BNO	Burlington Northern and Santa Fe Railway 
BNPZ	Pacific Rail Services
BNQ	Burlington Northern Santa Fe Railway 
BNRQ	Burlington Northern Santa Fe Railway 
BNRZ	Burlington Northern and Santa Fe Railway 
BNSF	Burlington Northern Santa Fe Railway 
BNXU	Burlington Northern and Santa Fe Railway 
BNZ	Burlington Northern and Santa Fe Railway 
BO	CSX Transportation, Incorporated
BOBX	Freeman Gas of N.C. Incorporated
BOCT	Baltimore and Ohio Chicago Terminal Railroad 
BOGU	BSL Transport
BONU	Bond International Limited
BOP	Border Pacific Railroad 
BORX	U.S. Borax Incorporated
BORZ	Ecorail Incorporated
BOSU	W. BOS Vloeistof Transport B.V.
BOZ	CSX Transportation, Incorporated
BPAX	U.S. Dept of Energy, Bonneville Power Administration
BPAZ	Acme Markets, Incorporated
BPCU	B P Chemicals Belgium
BPCX	Basin Electric Power Cooperative
BPIX	Nova Chemicals, Incorporated
BPLU	M1 Engineering Limited
BPLX	Nova Chemicals, Incorporated
BPOX	BP Amoco Chemical Comp. BP Oil Division
BPPX	GATX Financial Corporation
BPRR	Buffalo and Pittsburgh Railroad Incorporated
BR	Bradford Industrial Rail, Incorporated
BRAN	Brandon Corporation
BRAX	CIT Group/Capital Finance Incorporated
BRBX	Bombardier Transportation
BRC	Belt Railway Company of Chicago
BRCX	Bunge North America Incorporated
BRCY	Cando Contracting Limited
BREX	Big Rivers Electric Corporation
BRFD	Branford Steam Railroad
BRG	Brownsville and Rio Grande International Railroad
BRIX	Union Tank Car Company
BRNU	Brun S.A.
BRNZ	Comtrak Incorporated
BROU	Swedish Transocean Lines
BRRC	Borinstein Railroad 
BRRX	Brooklyn Resource Recovery Incorporated
BRW	Black River and Western Corporation
BS	Birmingham Southern Railroad 
BSCX	Bethlehem Steel Corporation
BSDA	BSDA Railroad
BSIX	Bethlehem Steel Corporation
BSLU	Blue Star Line Limited
BSMX	Bay State Milling Company
BSOR	Buffalo Southern Railroad Incorporated
BSPX	Otter Tail Power Company
BSRX	Branson Scenic Railway Incorporated
BSTX	Trinitas Corporation
BSVY	Boone and Scenic Valley Railroad
BTAX	Air Liquide America Corporation.
BTC	Birmingham Terminal
BTCO	Boston Terminal Company
BTCU	Bulkmatic Transport Co
BTCZ	Bulkmatic Transport Company
BTEX	BTE Equipment, LLC
BTLZ	Intermodal Services, Incorporated
BTRX	Rocky Mountain Transportation Services
BTTX	TTX Company
BUDX	Budd Company (temporary)
BUDZ	Bud Antle Incorporated
BUGX	Bruggere and Monson (Dieselmotive Co.)
BUKX	Louisville Gas and Electric Company
BUNZ	Burnside International Trucks Limited
BVCX	West Coast Express
BVHX	B.V. Heddrick Gravel and Sand Company
BVRY	Brandywine Valley Railroad 
BWCX	GE Plastics
BXBX	BXB Corporation
BXN	Bauxite and Northern Railway 
CA	Chesapeake and Albemarle Railroad
CAAX	MHC, Incorporated, Subsidiary of ConAgra, Incorporated
CABU	Bacardi and Company, Limited
CABX	Cabot Corporation
CACZ	Comacasa Line
CADX	CAN DO Incorporated
CAFU	Bay Cities Leasing Company
CAGX	MHC, Incorporated, Subsidiary of ConAgra, Incorporated
CAGY	Columbus and Greenville Railway 
CAGZ	Columbus and Greenville Railway
CALA	Carolina Southern Railroad 
CALX	California Railcar Corporation
CANX	CANAC International Incorporated
CAOX	Westlake CA and O
CAPX	TransAlta Utilities Corporation
CARR	Carrollton Railroad
CARX	Lamson and Sessions
CARZ	Anton Caraton and Son
CASO	Canadian Pacific Railway (CASO)
CATU	CATU Containers S.A.
CAXU	Container Applications International Incorporated
CBC	Chemins de fer Baie des Chaleurs Incorporated
CBCX	Colonial Brick Company, Incorporated
CBGR	Council Bluffs Railway /Great Western Railway of Iowa, LLC
CBHU	China Ocean Shipping Company
CBIU	Combi Line-Lash
CBIX	Central Bi-Products
CBL	Conemaugh and Black Lick Railroad
CBLU	Cooper Brothers Containers Limited
CBNS	Cape Breton and Central Nova Scotia Railway
CBPU	CBSL Transportation Services Limited
CBQ	Burlington Northern Santa Fe Railway 
CBQZ	Burlington Northern and Santa Fe Railway 
CBRM	Chillicothe-Brunswick Rail Maintenance Authority
CBRW	Columbia Basin Railroad 
CBRX	Charles Barthoid
CBRY	Copper Basin Railway Incorporated
CBYN	Crosbyton Railway Company, Incorporated
CC	Chicago, Central and Pacific Railroad 
CCAX	FDJ Leasing
CCBX	Union Carbide Corporation
CCCL	Connecticut Central Railroad 
CCCU	Compass Container Co Incorporated
CCCZ	Compass Container Co Incorporated
CCDX	Dayton Power and Light Company
CCEZ	Chicago, Central and Pacific Railroad 
CCFZ	Chi-Can Freight Forwarding
CCGX	Cando Contracting Limited
CCHX	Columbian Chemicals Canada Limited
CCIM	Corpus Christie Terminal
CCIZ	Crete Intermodal
CCKX	CCKX Incorporated
CCKY	Chattooga and Chickamauga Railway 
CCLU	Char Ching Shipping (USA) Limited
CCLX	Crystal Car Line Incorporated
CCPX	Canadian Chemical Producers' Assoc.
CCR	Kansas City Southern Railway 
CCRA	Camp Chase Industrial Railroad Corporation
CCRR	Claremont Concord Railroad Corporation
CCRU	Compagnie Des Containers Reservoir
CCRX	Coastal Refining and Marketing Incorporated
CCRY	Charles City Railway Lines Incorporated
CCRZ	Kansas City Southern Railway 
CCSU	Trans Ocean Limited
CCT	Central California Traction Company
CCTU	Coordinated Caribbean Transport, Incorporated
CCTX	Central Power and Light Company
CCTZ	Crowley Maritime Corporation
CCUO	Chicago-Chemung Railroad Corporation
CCWX	Coastal Chem, Incorporated
CCX	Columbian Chemicals Co, (Subsidiary of Phelps Dodge Corporation)
CCXU	Char Ching Shipping (USA) Ltd
CCXX	Costain Coal Incorporated
CDAC	Bangor and Aroostook Railroad (Canadian American Railroad )
CDAU	Canadian Tire Corporation Limited
CDAZ	Canadian Tire Corporation Limited
CDCX	Air Liquide America Corporation
CDGX	Bridgeview Systems, LLC, d/b/a Chatham Oil 
CDHX	Caledonian Rail Lines, LLC
CDLZ	Cardinal Freight Carriers
CDNU	Carotrans International
CDTX	California Department of Transportation
CEBX	Combustion Engineering Incorporated
CEDR	Cedar River Railroad 
CEFX	CIT Group/Capital Finance Incorporated
CEI	Union Pacific Railroad 
CEIW	Central Indiana and Western Railroad 
CELX	Celtran, Incorporated, Subsidiary of Celanese International Corporation
CEMR	Central Manitoba Railway, Incorporated
CEMX	Cemex Mexico SA de CV
CENX	Western Aggregates, Incorporated
CEPX	Trinity Industries Leasing
CERA	Central Railroad of Indianapolis
CERX	ER Carpenter, LLP
CETU	Custom Environmental Transport Incorporated
CEWX	Canadian Enterprise Gas Products
CF	Cape Fear Railways, Incorporated
CFKZ	XTRA Intermodal
CFLX	Crestbrook Forest Industries (captive service)
CFMX	Cargill, Incorporated
CFNR	California Northern Railroad 
CFRU	Cardinal Freight Carriers
CFSX	C and T Refinery, Incorporated
CFTX	Canadian Fertilizers Limited
CFWR	Caney Fork and Western Railroad
CG	Norfolk Southern Railway 
CGAX	Cargill Incorporated, C.G.D. Division
CGBX	Dow Chemical Canada, Incorporated
CGCX	Cargill Incorporated, C.G.D. Division
CGDX	Country Gas Distributors, Incorporated
CGEX	Cargill Incorporated, C.G.D. Division
CGFX	Consolidated Gas Company of Florida
CGLX	CGTX Incorporated
CGMU	Compagnie Generale Maritime (French Line)
CGMX	CGTX Incorporated
CGMZ	Compagnie Generale Maritime (French Line)
CGNE	Champagne Railroad, Incorporated
CGR	CG Railway , Incorporated
CGRX	Consolidated Grain and Barge Company
CGSX	Proflame, Incorporated
CGT	Canada and Gulf Terminal Railway
CGTU	Compagnie Generale Maritime (French Line)
CGTX	CGTX Incorporated
CGW	Union Pacific Railroad 
CHAU	Combined Transport Group, Incorporated
CHAX	Chartrand's Tank Car Service
CHEX	Equistar Chemicals
CHFU	Challenge International
CHIU	Chimco - Bulgaria
CHLX	Chemleco, Incorporated
CHMX	First Union Rail
CHP	Ferrocarriles Nacionales de Mexico
CHR	Chestnut Ridge Railway 
CHRC	Chaparral Railroad
CHRR	Chesapeake Railroad 
CHRX	The Chesapeake Div.
CHSX	Cenex Harvest States Cooperative
CHSZ	Intermodal Services, Incorporated
CHTS	Penn Eastern Rail Lines Incorporated
CHTT	Union Pacific Railroad 
CHVX	Chevron Chemical Company
CHW	Norfolk Southern Railway 
CI	Cambria and Indiana Railroad 
CIC	Cedar Rapids and Iowa City Railway
CIIX	Contico International, Incorporated
CIND	Central Railroad of Indiana
CIPX	Ameren Energy Generating Company
CIR	City of Rochelle, Illinois
CIRR	Chattahoochee Industrial Railroad
CIRX	Consbec Incorporated
CIRY	Central Illinois Railroad 
CISD	Colonel's Island Railroad 
CITU	Citroen
CITX	PLM International, Incorporated
CIW	Illinois Central Railroad 
CIXX	Calciner Industries, Incorporated
CJPX	General Electric Rail Services Corporation
CKIX	C.K. Industries
CKP	Colorado, Kansas and Pacific Railway 
CKRY	Kansas and Oklahoma Railroad, Incorporated
CKSI	Carthage, Knightstown and Shirley Railroad
CLC	Columbia and Cowlitz Railway 
CLCZ	Complete Logistics Company
CLDZ	Celadon Trucking Services Incorporated
CLEX	Cieco Corporation
CLGU	Costa Line Cargo Services
CLHU    Capital Leasing (GE)
CLIX	Calumet Lubricants
CLMX	Cyprus Sierrita Corporation
CLNA	Carolina Coastal Railway, Incorporated
CLOU	CLOU Container Leasing GmbH
CLOX	Clark Refining and Marketing Incorporated
CLP	Clarendon and Pittsford Railroad
CLPX	Boulder Scientific Company
CLPZ	Clarendon and Pittsford Railroad 
CLRX	Clayton Rail
CLSL	Columbia and Silver Creek Railroad
CLSX	Cargill Incorporated, Salt Division
CLTU	Chemical Leaman Tank Lines Incorporated
CLTX	Cloro de Tehuantepec, S.A. de C.V.
CM	Central Montana Rail, Incorporated
CMC	CMC Railroad Incorporated
CMCU	Crowley Maritime Corporation
CMCX	Sweetman Construction Company
CMCZ	Crowley Maritime Corporation
CMDX	Cargill, Incorporated
CMGN	Central Michigan Railway 
CMHX	CarMath Incorporated
CMIX	Consolidated Minerals, Incorporated
CMLU	Containers Marine Lines (Division of American Export)
CMLZ	Containers Marine Lines Isbrandtsen
CMMU	Medcontainers
CMO	Union Pacific Railroad 
CMPA	Madison Railroad, Division of City of Madison Port Authority
CMPU	Complete Logistics Company
CMSN	Crowley Marine Services
CMU	Columbus Charter Service
CMUU	Canada Maritime Agencies Limited
CN	Canadian National Railway
CNA	Canadian National Railway
CNAZ	Grand Trunk Western Railroad Incorporated
CNDX	Connecticut Department of Transportation
CNEU	Canadian National Railway
CNEZ	Canadian National Railway
CNGU	Sicng (Ind. Chim. Du Nord de la Grece S.A.)
CNGX	CONAG Finance Incorporated-CNG Transmission Corporation
CNHX	Ontario Power Generation, Incorporated
CNIS	Canadian National Railway
CNLX	CANAC International Incorporated
CNMZ	Consolidated Rail Corporation
CNNU	Compania Nacional de Nabegacao (US African Line)
CNOR	Cincinnati Northern
CNOW	Columbia and Northern Railway 
CNPU	Canadian National Railway
CNPZ	Canadian National Railway
CNQ	Canadian National Railway
CNRR	California Northern Railroad
CNRU	Canadian National Railway
CNRZ	Canadian National Railway
CNSX	Consolidated Oil and Transportation Company, Incorporated
CNTP	Cincinnati, New Orleans and Texas Pacific Railway 
CNTX	Continental Tank Car Corporation
CNUR	C and NC Railroad Corporation
CNVX	Convoyeur National Incorporated
CNW	Union Pacific Railroad 
CNWX	Canadian Wheat Board
CNWZ	Union Pacific Railroad 
CNYK	Central New York Locomotive Company
CNZR	Central New England Railroad 
CO	CSX Transportation, Incorporated
COAX	Trinity Rail Management Incorporated
COBX	Cobre Mining Company, Limited
COCX	Chevron Oronite Company, LLC
COEH	Conecuh Valley Railroad
COER	Crab Orchard and Egyptian Railroad
COEZ	Crab Orchard and Egyptian Railroad
COLX	Alliant Energy
COMX	Commonwealth Edison Company
CONU	Contrans
CONX	Conoco Incorporated
COOK	Cook Transit
COOX	First Union Rail
COP	City of Prineville Railway
COPX	CanadianOxy Industrial Chemicals Limited Partnership
CORP	Central Oregon and Pacific Railroad, Incorporated
CORU	CATU Containers S.A.
CORX	Coors Brewing Company
COSU	China Ocean Steamship Limited
COSX	Cabot Corporation, CAB-O-SIL Division
COZ	CSX Transportation, Incorporated
CP	Canadian Pacific Railway
CPAA	Canadian Pacific Railway
CPAX	CITGO Petroleum Corporation
CPBU	Soo Line Railroad
CPBZ	Soo Line Railroad
CPCX	Chevron Phillips Chemical Company, LP
CPDR	Carolina Piedmont Division/South Carolina Central Railroad 
CPDU	Delaware and Hudson Railway Company, Incorporated
CPDX	Chevron USA Incorporated
CPDZ	Delaware and Hudson Railway Company, Incorporated
CPGZ	ContainerPort Group Incorporated
CPHX	Ontario Power Generation, Incorporated
CPI	Canadian Pacific Railway
CPIX	ICI Acrylics, Incorporated
CPLX	CPLX Leasing Limited
CPOX	Consumers Power Company
CPPU	Canadian Pacific Railway 
CPPX	Consolidated Papers, Incorporated
CPPZ	Canadian Pacific Railway 
CPRS	Canadian Pacific Railway
CPRX	Carolina Power and Light Company
CPRZ	Canadian Pacific Railway 
CPT	Canadian Pacific Railway
CPVU	Containers and Pressure Vessels Ltd
CPWX	Canadian Wheat Board
CQPA	Central Columbiana and Pennsylvania Railway Incorporated
CR	Norfolk Southern Railway 
CRAZ	Cornucopia Transportation Incorporated
CRCX	Consolidated Rail Corporation
CRCZ	Norfolk Southern Railway 
CRDX	Chicago Freight Car Leasing Company
CRE	Consolidated Rail Corporation (Eastern District)
CREU	Canadian Retail Shippers Association
CREX	Citicorp Railmark, Incorporated
CREZ	Canadian Retail Shippers Association
CRGX	Cargill, Incorporated
CRIJ	Carolina Rail Services, Incorporated
CRIX	Citicorp Railmark, Incorporated
CRL	Chicago Rail Link
CRLE	Coe Rail, Incorporated
CRLU	Carlisle Leasing International
CRLX	Canadian Railserve Limited
CRMU	Norfolk Southern Railway 
CRMX	MHC, Incorporated, Subsidiary of ConAgra, Incorporated
CRMZ	Norfolk Southern Railway 
CRN	Norfolk Southern Railway 
CRPU	Norfolk Southern Railway 
CRPX	Centennial Gas Liquide LLC
CRQU	Norfolk Southern Railway 
CRR	CSX Transportation, Incorporated
CRRX	Canon City and Royal Gorge Railroad LLC
CRSX	Cost Rail Service
CRTZ	Norfolk Southern Railway 
CRXU	Cronos Containers (U.K.)
CRYX	Cryo-Trans, Incorporated
CRZ	Norfolk Southern Railway 
CS	Burlington Northern Santa Fe Railway 
CSAU	Costa Line
CSBX	Cargill, Incorporated, Salt Division
CSCD	Cascade and Columbia River Railroad 
CSCX	Coal Supply Corporation
CSDX	Metropolitan Water Reclamation District of Greater Chicago
CSKR	C and S Railroad Corporation
CSKU	Consolidated Services, Incorporated
CSL	Chicago Short Line Railway 
CSMX	Carol and Andy Muller
CSNX	Trident NGL, Incorporated
CSO	Connecticut Southern Railroad
CSOX	CITGO Petroleum Corporation
CSP	Camas Prairie RailNet Incorporated
CSPX	Chesapeake Speciality Products
CSRX	Conway Scenic Railroad
CSRZ	CSX Transportation, Incorporated
CSS	Chicago SouthShore and South Bend Railroad
CSTX	Canada Starch Company, Incorporated
CSUX	City of Colorado Springs, Department of Electric Generation
CSVU	Compania Sud Americana de Vapores GmbH
CSWX	Central and South West Services, Incorporated
CSXE	CSX Transportation, Incorporated
CSXT	CSX Transportation, Incorporated
CSXU	CSX Transportation, Incorporated
CSXZ	CSX Transportation, Incorporated
CSYX	Central Soya Company, Incorporated
CT	City of Columbia, d/b/a Columbia Terminal
CTCU	Container Trading Company
CTCX	Endasa S.A. De C.V.
CTE	Cen-Tex Rail Link Limited
CTEU	Spanish Lines
CTEX	PLM International, Incorporated
CTGZ	Combined Transport Group, Incorporated
CTIE	Kansas City Southern Railway 
CTIU	CTI-Container Transport International Incorporated
CTIX	Southeastern Industrial Enterprises, Incorporated
CTIZ	CTI-Container Transport International Incorporated
CTKU	Container Tank Services, Limited
CTLX	Endasa S.A. De C.V.
CTML	Cairo Terminal Railroad 
CTN	Canton Railroad 
CTNX	General Electric Rail Services Corporation
CTPX	Courtesy Corporation
CTR	Clinton Terminal Railroad 
CTRN	Union Pacific Railroad 
CTRU	Container Trading Company
CTRW	Carlton Trail Railway 
CTRX	C and T Refinery, Incorporated
CTSU	Bibby Bros Company
CTSX	Chem Comp Systems d/b/a CTS Cement Manufacturing Incorporated
CTSZ	Carotrans International
CTTX	TTX Company
CTUU	Container Trading Company
CTVX	Cleveland Terminal and Valley Railway Incorporated
CTWU	Container Trading Company
CTZZ	Continental Transportation Company
CUEX	Colorado-Utility Electric Assoc.
CUOH	Columbus and Ohio River Railroad 
CUST	Chicago Union Station Company
CUVA	Cuyahoga Valley Railway 
CV	Grand Trunk Western Railroad Incorporated
CVC	Canadian National Railway
CVQ	Grand Trunk Western Railroad Incorporated
CVR	Cimarron Valley Railroad L.C.
CVRX	Locomotive and Tower Preservation Fund Limited
CVRX	Caddo Valley Railroad 
CVRY	Caddo Valley Railroad 
CVRZ	Grand Trunk Western Railroad Incorporated
CW	Colorado and Wyoming Railway 
CWBX	C. W. Brooks, Incorporated
CWCX	Canandaigua Wine Company, Incorporated
CWCY	Caldwell County Railroad 
CWEX	Midwest Generation LLC
CWIU	Con-Way Intermodal
CWIZ	Con-Way Intermodal
CWMX	Chemical Waste Management, Incorporated
CWP	Chicago Rail Link
CWR	CWR Incorporated
CWRL	Central Western Railway Corporation
CWRY	Commonwealth Railway, Incorporated
CWRZ	Providence and Worcester Railroad 
CWTX	ChemWest Industries Incorporated
CWTZ	Con-Way Truckload Services
CXPZ	CSX Transportation
CXRZ	CSX Transportation
CXVZ	CSX Intermodal, Incorporated
CYCY	Crystal City Railroad, Incorporated
CYDX	Conrad Yelvington Distributors, Incorporated
CYTX	Construcciones Y Trituaraciones, S.A. De C.V.
CZCX	Crown Zellerbach Corporation
CZRY	Carrizo Gorge Railway Incorporated
DA	Canadian Pacific Railway
DACX	VIP Tank Services
DAFU	Dafra Lines SA
DAFX	U.S. Dept. of Defense, Troop Support and Aviation Material Readines
DAFZ	Dafra Lines SA
DAIR	D and I Railroad 
DAKR	Dakota Rail Incorporated
DAKS	Dakota Short Line
DALZ	D and A Leasing Incorporated
DAPX	Dairyland Power Cooperative
DARU	Dart Containerline Incorporated
DARZ	Dart Intermodal, Incorporated
DATU	Dart Containerline Incorporated
DATX	DATX Associates
DAVX	W. R. Grace and Company - Conn. Davison Chemical Division
DAWX	D.A. Walmsley and Company
DAX	Occidental Chemical Corporation
DBCX	BASF Corporation
DBSU	Donbar Steamship Company, Incorporated
DBUX	CIT Group/Capital Finance Incorporated
DC	Delray Connecting Railroad 
DCAX	Tarmac Fla., Incorporated
DCBX	Degussa Corporation
DCCU	Dow Corning Corporation
DCCX	McDonnell Douglas Corporation
DCFB	Dodge City Ford and Bucklin Railroad 
DCFX	PLM International, Incorporated
DCIU	Dana Container Incorporated
DCIX	Danella Construction Corporation
DCLU	Dutch Container Leasing B.V.
DCLX	Dow Chemical Canada, Incorporated
DCOU	Dow Corning Corporation
DCPX	Dart Container Corporation of Pennsylvania
DCRR	Dubois County Railroad
DCSU	Delta Conteneur Service
DCTX	PLM International, Incorporated
DDDX	Frontier Cooperative Company
DDEX	Dupont Dow Elastomers, L.L.C.
DDNX	Didion, Incorporated
DEBX	Ceres AG Products
DEEX	Detroit Edison Company
DEGX	Mississippi Power Company
DEMX	Demeter Incorporated
DETX	Detroit Edison Company
DFTX	DTE Transportation Services Limited
DGBY	Digby Trucklines
DGCX	Dakota Gasification Company
DGHX	IMC Chemicals
DGIX	D and G Enterprises LLC
DGNO	Dallas, Garland and Northeastern Railroad, Incorporated
DH	Delaware and Hudson Railway Company, Incorporated
DHNY	Delaware and Hudson Railway Company, Incorporated
DHPX	Degussa Corporation
DHRU	Den Hartogh NV
DIIU	Dart Intermodal, Incorporated
DJBX	Donald J. Bertel d/b/a Gandy Dancer, Incorporated
DJJX	Joseph Transportation Incorporated
DJLX	Joseph Leasing Limited
DJMX	Daniel John Marnell
DJPX	Joseph Transportation Incorporated
DJRX	Joseph Transportation Incorporated
DJTX	Joseph Transportation Incorporated
DKPX	Duke Power Company (Scale Test Cars)
DKS	Union Pacific Railroad 
DKUX	Exxon Mobil Corporation
DL	Delaware-Lackawanna Railroad 
DLC	Drummond Lighterage
DLFX	Diversified Lease Funding, Incorporated
DLKU	Deltank Limited
DLMX	Daylight Locomotives and Machine Works, Incorporated
DLPX	Degussa Canada Limited
DLRX	General Electric Rail Services Corporation
DLSX	Diesel Supply Company, Incorporated
DLTX	Dale L. Thornborough
DLVX	Thiokol Corporation
DLWR	Depew, Lancaster and Western Railroad
DLWX	D.L. and W. Incorporated
DM	Lake State Railway 
DME	Dakota, Minnesota and Eastern Railroad Corporation
DMHX	Davenport Mammoet L.L.C.
DMIR	Duluth, Missabe and Iron Range Railway 
DMIX	Minnesota Corn Processors Bulk Products Div.
DMLX	General Electric Rail Services Corporation
DMLZ	DML Containers
DMM	Dansville and Mount Morris Railroad 
DMVW	Dakota, Missouri Valley and Western Railroad, Incorporated
DNAX	Dana Railcare
DNE	Duluth and Northeastern Railroad 
DOCX	Du Pont Canada Incorporated
DODU	Department of Defense (U.S.)
DODX	U.S. Dept. of Defense, Military Traffic Management Command
DODZ	Department of Defense (U.S.) 20' chassis
DOLX	Dolese Bros. Company
DOTX	U.S. DOT/Federal Railroad Administration
DOWU	Dow Chemical Company
DOWX	Dow Chemical Company
DPDZ	Delaware and Hudson Railway Company, Incorporated
DPGX	Tractech Systems
DPIX	Dufour Petroleum, Incorporated
DQE	De Queen and Eastern Railroad Incorporated
DR	Dardanelle and Russellville Railroad Incorporated
DREX	ProTrade Steel Company, Limited
DRGW	Union Pacific Railroad 
DRGX	Denver and Royal Gorge Railway, LLC
DRHY	Durham Transport Incorporated
DRI	Davenport, Rock Island and North Western Railroad
DRIR	Denver Rock Island Railroad
DRMX	Danbury Railway Museum Incorporated
DRSX	D.O.T. Rail Services Incorporated
DRTU	Dart Intermodal, Incorporated
DRTZ	Dart Intermodal, Incorporated
DSA	Soo Line Railroad
DSBU	Ameribrom, Incorporated
DSCX	DIFCO Incorporated
DSIX	Dowell Schlumberger Incorporated
DSLX	DeGussa Corporation
DSLZ	Intermodal Services, Incorporated
DSRC	Dakota Southern Railway 
DSRR	Delta Southern Railroad 
DSSX	Detroit Salt Company, L.C.
DT	Decatur Junction Railway 
DTCX	DTE Transportation Services, Incorporated
DTEX	Dresser Transportation Equipment Div., Dresser Industries (Test Cars)
DTI	Grand Trunk Western Railroad Incorporated
DTIZ	Grand Trunk Western Railroad Incorporated
DTLX	Delta Tank Line Company
DTRR	Housatonic Railroad 
DTS	Grand Trunk Western Railroad Incorporated
DTTX	TTX Company
DTZZ	Direct Transit, Incorporated
DUCX	Du Pont Canada Incorporated
DUKX	Dupps Company
DUPX	Du Pont De Nemours and Company, Incorporated
DUT	Denver Union Terminal Railway 
DUTC	Dallas Union Terminal
DV	Delaware Valley Railway 
DVLX	Freeport-McRo-Ran Sulphur Company
DVR	Devco Railway, Cape Breton Development Corporation (Coal Division)
DVRU	Dover Limited
DVS	Delta Valley and Southern Railway 
DVSZ	Delta Valley and Southern Railway 
DWAU	Degussa Antwerpen NV
DWC	Canadian National Railway
DWCX	David Witherspoon, Incorporated
DWP	Duluth, Winnipeg and Pacific Railway
DYLX	Transportation Equipment, Incorporated
DYNX	Dyno Nobel, Incorporated
EACH	East Camden and Highland Railroad
EACU	East Asiatic Company, Limited
EAGX	Eaglebrook Incorporated
EARY	Eastern Alabama Railway
EASO	EASX Corporation d/b/a EASX Railroad Corporation
EASU	Waterfront Container Leasing Company, Incorporated
EASZ	Waterfront Container Leasing Company, Incorporated
EBAX	Albermarle Corporation
EBPX	Empire Builder Private Cars
ECBR	East Cooper and Berkeley Railroad 
ECCX	Ethyl Canada Incorporated
ECDX	Ethyl Petroleum Additives, Incorporated
ECGX	Alabama Power Company
ECIX	Erman Corporation
ECLX	ELM-Central Rail Leasing, LP
ECO	Ecorail Incorporated
ECOX	Eco East
ECOZ	Ecorail Incorporated
ECPX	E.C.C. America Incorporated
ECQX	Engineered Carbons Incorporated
ECRX	Econo-Rail Corporation
ECRZ	Norfolk Southern Railway 
ECTB	East Chattanooga Belt Railway 
ECUX	Exxon Mobil Corporation
ECXX	ECDC Environmental, L.C.
EDCX	El Dorado Chemical Company
EDEX	Empire District Electric Company
EDGX	Alliant Energy
EDIU	EDI Incorporated
EDIZ	EDI Incorporated
EDW	El Dorado and Wesson Railway 
EDZX	Envases de Zacatecas, S.A. de C.V.
EE	Ellis and Eastern Company
EEC	East Erie Commercial Railroad
EEIX	Electric Energy, Incorporated
EELX	General Electric Rail Services Corporation
EFRR	Effingham Railroad 
EGSX	Entergy Gulf States, Incorporated
EHSX	Essex Hybrid Seed Company, Incorporated
EICX	Edlow International Company
EIDU	Ethyl S A
EIRC	Eastern Illinois Railroad 
EIRR	Eastern Idaho Railroad, Incorporated
EISU	Evergreen International (USA)
EJE	Elgin, Joliet and Eastern Railway 
EJR	East Jersey Railroad and Terminal
EKBU	Keiserling (UK) Limited
EL	Norfolk Southern Railway 
ELCX	Eli Lilly and Company
ELFX	Electric Fuels Corporation
ELKR	Elk River Railroad, Incorporated
ELKX	Elkem Metals Company
ELOX	ELCON Incorporated
ELS	Escanaba and Lake Superior Railroad 
ELSX	Kentucky May Coal Company, Incorporated
ELTX	Soltex Polymer Corporation
EM	Edgemoor and Manetta Railway
EMCU	Evergreen Marine Corporation
EMCZ	Evergreen International (USA) Corporation
EMEU	East Med Tanks Limited
EMHR	East Mahanoy and Hazelton Railroad 
EMIX	Environmental Management Incorporated
EMMU	Eastern Mediterranean Cont. Company, Limited
EMPX	Empiregas Equipment Corporation
EMRY	Eastern Maine Railway 
EMTU	East-Med Tanks International
EN	Canadian Pacific Railway
ENDX	Joseph Transportion de Mexico S.A. de C.V.
ENGX	Englehard Corporation
ENR	E and N Railway 
ENRX	United States Enrichment Corporation
ENSZ	Norfolk Southern Railway 
EOGX	Union Carbide Ethylene Oxide/Glycol Company
EPAX	Exxon Mobil Corporation
EPCX	Enterprise Products Company
EPRY	East Penn Railway Incorporated
EPTC	East Portland Traction Company
EQUX	Equistar Chemicals
ERBU	Containers for Bulk Haul Kieserling
ERCU	Erco Industries Limited
ERCX	EXCEL Railcar Corporation
ERFU	Ermefer S.A.
ERIX	Eric Dewayne Hopp
ERLX	General Electric Rail Services
ERSX	Excel Railcar Services, Incorporated
ESCX	First Security Bank National Association
ESHR	Eastern Shore Railroad, Incorporated
ESLJ	East St. Louis Junction Railroad
ESLZ	East St. Louis Junction Railroad
ESRX	Empire State Railcar, Incorporated
ESSX	Colonial Chemical Company
ETC	East Texas Central Railroad
ETCX	Eastman Chemical Company, Incorporated
ETL	Essex Terminal Railway 
ETMX	Etarco Rail Services, Incorporated
ETRX	Arkansas Power and Light Company
ETRY	East Tennessee Railway, L.P.
ETSX	Emery Tree Service, Incorporated
ETTX	TTX Company
EUGX	Farmland Industries, Incorporated
EURX	Eurocan Pulp and Paper Company
EUSX	Exxon Mobil Corporation
EV	Everett Railroad 
EVAU	Eisenbahn-Vverkehrsmittel A.G.
EVT	Evansville Terminal Company, Incorporated
EWEX	Commonwealth Edison Company
EWR	Elkhart and Western Railroad 
EWSX	Indianapolis Power and Light Company
EXFU	Exsif
EXMX	Express Marco Incorporated
FALX	Falk Corporation
FANU	Brenner Tank Incorporated
FAPR	Floydada and Plainview Railroad 
FBAU	Ahlers Lines NV
FBDC	Ford County Historical Railroad Preservation Foundation
FBFU	Marine Transworld Equip. Corporation
FBLU    Florens Containers Services, Inc.
FBMU	CIE Maritime Belge S.A.
FBMX	Fayblock Materials
FBSU	Franco Belgian Services
FBZU	China Ocean Shipping Company
FC	Fulton County Railroad, Incorporated
FCCM	Compania de Ferrocarriles Chiapas Mayab S.A. de C.V.
FCCX	Finova Capital Corporation
FCEN	Florida Central Railroad 
FCEX	Cenex Harvest States Cooperative
FCHZ	Flexi-Van Leasing, Incorporated
FCM	Ferrocarriles Nacionales de Mexico
FCOX	FLO CO 2 Incorporated
FCP	Ferrocarriles Nacionales de Mexico
FCPZ	National Railways of Mexico (Ferrocarriles Nacionale)
FCSX	Florida Crushed Stone Company
FCTX	Farmers Commodities Transportation
FDDM	Union Pacific Railroad 
FDSU	Foodsource, Incorporated
FDSZ	Foodsource, Incorporated
FEC	Florida East Coast Railway 
FECU	Yamashita-Shinnihon Line
FECZ	Florida East Coast Railway 
FEIX	Farmers Elevator Incorporated of Grace City
FEXZ	Florida Express Carriers Incorporated
FFEZ	Frozen Food Express
FFFZ	Flexi-Van Leasing, Incorporated
FFIX	Procor Limited
FFTX	Fun Trains, Incorporated
FGCX	Florida Gulf Coast Railroad Museum Incorporated
FGER	Fruit Growers Express Company
FGGX	Farmers Grain Co-Operative
FGLK	Finger Lakes Railway Corporation
FGLX	Factor Gas Liquids Incorporated
FGMR	Fruit Growers Express Company
FGWX	Federal Grain Inspection Service (USDA) (Scale Test Cars)
FILX	Wellman, Incorporated
FINU	Interpool Limited
FINX	Trinity Rail Management Incorporated
FIR	Flats Industrial Railroad 
FISZ	Ecorail Incorporated
FJLX	Big West Oil Company
FLAX	Flexsys America L.P.
FLAZ	Flexi-Van Leasing, Incorporated
FLCX	Flex Leasing Corporation
FLDX	DTE Transportation Services Incorporated
FLEX	RailLease, Incorporated
FLIX	Farmland Industries, Incorporated
FLJX	Big West Oil Company
FLNX	R.P. Flynn Incorporated, d/b/a Ohio Railway Supply
FLOX	Flex Leasing Corporation
FLRX	ADM Milling Company
FLSX	Great Miami, Incorporated
FLT	Foss Launch and Tug
FLXU	Flexi-Van Containers/Chassis
FLXZ	Flexi-Van Leasing, Incorporated
FMCU	FMC Corporation, Industrial Chenical Group
FMGU	Flota Mercante Grancolombiana S.A.
FMID	Florida Midland Railroad 
FMIX	CCKX Incorporated
FMLX	FMC Corporation
FMOX	FMC Corporation
FMRC	Farmrail Corporation
FNAX	Ferrellgas LLP
FNE	TFM, S.A de C.V.
FNOR	Florida Northern Railroad 
FP	Fordyce and Princeton Railroad 
FPAX	Formosa Transrail Corporation
FPBX	International Paper Corporation
FPCX	Oxy Vinyls LP
FPN	Ferrocarriles Nacionales de Mexico
FPPX	Fayette Power Project
FPXZ	Flexi-Van Leasing, Incorporated
FRDN	H and S Railroad
FREU	ABS Industrial Verification, Incorporated
FRLU	Farrell Lines Incorporated
FRR	Falls Road Railroad 
FRSU	China Ocean Shipping Company
FRTX	Farm-City Transport, Incorporated
FRVR	Fox Valley and Western, Limited
FSCU    Florens Container Services, Inc
FSFL	Burlington Northern Santa Fe Railway 
FSHX	General Electric Rail Services
FSIX	FSIX Incorporated
FSR	Fort Smith Railroad 
FSRR	Ferrocarril del Sureste, S.A. de C.V.
FST	Ferrocarriles Nacionales de Mexico
FSTU	Fastrac Intermodal L.L.C.
FSTX	Fuel Supply Trust
FSTZ	Fastrac Intermodal L.L.C.
FSUD	Fort Street Union Depot Company
FSVB	Fort Smith and Van Buren Railway Co
FTCU	Firsttank Corporation
FTMZ	Fruit Growers Express Company
FTSX	Fairmont Tamper
FTTX	TTX Company
FUCU	Shinko Pantec Company, Limited
FURX	First Union Rail
FUS	Ferrocarriles Nacionales de Mexico
FVIU	Flexi-Van Incorporated
FVIZ	Flexi-Van Leasing, Incorporated
FVLZ	Venezuelan Line
FVPZ	Flexi-Van Leasing, Incorporated
FVRR	Fredonia Valley Railroad Incorporated
FVW	Fox Valley and Western, Limited
FWAZ	Flexi-Van Leasing, Incorporated
FWCR	Florida West Coast Railroad Incorporated
FWD	Burlington Northern Santa Fe Railway 
FWDB	Fort Worth and Dallas Belt Railroad
FWDR	Fort Worth and Dallas Railroad 
FWIU	Trans Ocean Limited
FWLX	Foster Wheeler Limited
FWRY	Fillmore Western Railway 
FwTZ	Flexi-Van Leasing, Incorporated
FWWR	Fort Worth and Western Railroad 
FXE	Ferrocarril Mexicano, S.A. de C.V.
GA	CSX Transportation, Incorporated
GAAB	Georgia and Alabama Division, South Carolina Central Railroad 
GABX	General American Marks Company
GACX	General American Marks Company
GAEX	General American Marks Company
GAFX	Fuller Company
GALX	Georgia Power Company
GAMX	Arrendadora Nacional De Carros De Ferrocaril
GANO	Georgia Northern Railway 
GAPX	Georgia Gulf Corporation-Plaquemine Div.
GARX	General American Marks Company
GASX	General American Marks Company
GATU	Gateway Container Leasing
GATX	General American Marks Company
GBRX	Greenbrier Leasing Corporation
GBRY	Gettysburg Railway.
GBRZ	Greenbrier Leasing Corporation
GBW	Fox Valley and Western, Limited
GC	Georgia Central Railway, L.P.
GCAU	G.C.A. Transport Limited
GCCX	GATX Financial Corporation
GCDU	Overseas Container Limited
GCEU	Genstar Container Corporation
GCEZ	Genstar Container Corporation
GCFX	Alstom Canada Incorporated - Transport
GCIX	Gabriel Chemicals, Incorporated
GCLX	Gold Coast Limited
GCLZ	Global Chassis Leasing, Incorporated
GCPU	Genstar (Burlington Northern and Santa Fe Railway )
GCPX	Georgia Gulf Corporation, PVC Div.
GCRX	Grand Canyon Railway Incorporated
GCSR	Gulf, Colorado and San Saba Railway
GCSU	G.C.S. Containers Service S.A.
GCTU	Gulf Container Lines
GCTX	General Chemical Corporation
GCW	Garden City Western Railway 
GCX	Honeywell International Incorporated
GDCX	General American Marks Company
GDJX	Grimmel Industries
GEAX	Trinity Rail Management Incorporated
GECX	General Electric Company, Transportation Systems Business Operations
GECZ	GE Captial Container Finance Corporation
GEGX	GE Gas Turbine
GELX	Grain Marketing, L.C.
GEMX	General Electric Rail Services
GENX	General Electric Rail Services
GEOX	GEO Specialty Chemicals
GEPX	Trinity Rail Management Incorporated
GETX	General American Marks Company
GETZ	Transport International Pool, Incorporated
GEX	General Electric Company
GEXR	Goderich-Exeter Railway 
GF	Norfolk Southern Railway 
GFAX	Gordon Fay Associates, Incorporated
GFC	Grand Falls Central Railway  
GFCX	Glens Falls Lehigh Cement Company
GFCZ	General Foods Corporation
GFLX	Greenfield Logistics LLC
GFR	Grand Forks Railway 
GFRR	Georgia and Florida Railroad 
GFSX	GATX Financial Corporation
GGCX	Georgia Gulf Corporation-Plaquemine Div
GGIX	Garvey International, Garvey Grain Div.
GGMX	Golden Gate Railroad Museum Incorporated
GGPX	General American Marks Company
GGS	Georgia Great Southern Division, South Carolina Central Railroad
GHBX	G.Heileman Brewing Company, Incorporated
GHRD	Green Hills Rural Development, d/b/a Chillicothe-Brunswick Rail Maintenance Authority
GIEX	GATX Financial Corporation
GIHX	Cornerstone CandM Incorporated d/b/a Gifford Hill and Company
GILX	Gilman Paper Company
GIMX	GATX Financial Corporation
GITM	Golden Isles Terminal Railroad, Incorporated
GKLX	Gold Kist Incorporated
GLBZ	Trac Lease Incorporated
GLCU	Flex-Van Leasing, Incorporated
GLCX	Great Lakes Carbon Corporation
GLKU	Great Lakes Chemical Corporation
GLKX	Great Lakes Chemical Corporation
GLNX	GLNX Corporation
GLRX	Georgetown Loop Railroad, Incorporated
GLSR	Gloster Southern Railroad Corporation
GLSX	Glacier State Distribution Services, Incorporated
GMGX	M and G Polymers USA LLC
GMHX	General Leasing Corporation
GMIX	Chicago Freight Car Leasing Company
GMO	Illinois Central Railroad 
GMRC	Green Mountain Railroad Corporation
GMRY	Great Miami and Scioto Railway 
GMSR	Kansas City Southern Railway 
GN	Burlington Northern Santa Fe Railway 
GNA	Kansas City Southern Railway 
GNAX	Holnam, Incorporated
GNBC	Grainbelt Corporation
GNCU	Gallatin National Company
GNFX	City of Gainesville, Florida
GNLX	Georgia Industrial Leasing Company
GNRR	Georgia Northeastern Railroad 
GNWR	Genesee and Wyoming Railroad 
GOCU	Greenfield Overseas Cont. Incorporated
GOCX	Chevron Phillips Chemical Company, LP
GOHX	General American Marks Company
GONX	Railgon Company
GOT	Toronto Area Transit Operating Authority
GOTU	Gulf Overseas Towing
GPBX	Georgia-Pacific Corporation
GPCX	Georgia-Pacific Corporation
GPDX	General American Marks Company
GPFX	General American Marks Company
GPIX	Sunbelt Cement
GPLU	Management Control and Maintenance S.A.
GPLX	General American Marks Company
GPMX	Georgia-Pacific Corporation- Mid Continent Wood Products Mfg.Div.
GPPX	Georgia-Pacific Corporation
GPSX	Georgia-Pacific Corporation, Eastern Wood Products Mfg.Div.
GPUX	GPU Service Corporation
GR	Grand Rapids Eastern Railroad Incorporated
GRCX	Granite Rock Company
GRDX	Grand River Dam Authority
GREX	Georgetown Rail Equipment Company
GRFF	Georgia and Florida Railroad 
GRIV	Gauley River Railroad, LLC
GRMX	Gopher State Railway Museum
GRN	Carolina Piedmont Division, South Carolina Central Railroad Co
GRNR	Grand River Railway 
GROI	Genesee Rail-One Incorporated
GROX	First Union Rail
GRPX	CIT Group/Capital Finance Group
GRR	Georgetown Railroad 
GRRX	Wampum Hardware
GRSX	Gunderson Rail Services
GRTX	Savage-Tolk Energy Services
GRWR	Great Walton Railroad 
GRYX	John H. Grace Company
GSAX	Granite State Concrete Company
GSCU	Eurotainer U.S. Incorporated
GSCX	GATX Financial Corporation
GSF	Georgia Southern and Florida Railway 
GSIX	Williams Energy Ventures, Incorporated
GSM	Great Smokey Mountains Railway
GSNX	Helm Financial Corporation
GSOR	Indiana Hi-Rail Corporation
GSRX	Golden Spike Railroad Services
GSSX	Gopher State Scrap and Metal
GSTU	Genstar Container Corporation
GSWR	Georgia Southwestern Div., South Carolina Central Railroad 
GTA	Grand Trunk Western Railroad Incorporated
GTAX	Harvest States Cooperative
GTEU	General Transport Equipment Co Inc
GTIS	Guilford Transportation Industries
GTIZ	G. T. Intermodal U.S.A.
GTLZ	G. T. Leasing
GTPZ	TIT Services
GTR	Great River Railroad; d/b/a Rosedale-Bolivar County Port Comm.
GTRA	Golden Triangle Railroad
GTTX	TTX Company
GTW	Grand Trunk Western Railroad Incorporated
GTWQ	Grand Trunk Western Railroad Incorporated
GTZZ	GT Trucking Incorporated
GU	Grafton and Upton Railroad 
GUAX	Georgia Power Company
GUEX	General American Marks 
GURZ	Grafton and Upton Railroad 
GVDX	Oxy Vinyls, LP
GVSR	Galveston Railroad, L.P.
GWAX	Railroad Salvage and Restoration, Incorporated
GWIX	GWI Leasing Corporation
GWR	Great Western Railway 
GWRC	Georgia Woodlands Railroad 
GWRS	Great Western Railway 
GWSR	Great Western Railway 
GWSW	GWI Switching Services, L.P.
GWWE	Gateway Eastern Railway 
GWWR	Gateway Western Railway
GYLX	Gaylord Container Corp
HABX	Habco International Incorporated
HALX	Holland American Line – Westours Incorporated
HAMU	Costa Line
HANU	Hansa Line
HANX	L. Hansen’s Forwarding
HAPX	Helm-Atlantic Leasing LLP
HARX	General Electric Rail Services Corporation
HATU	H A T Enterprises Incorporated
HATX	Helm Financial Corporation
HATZ	H A T Enterprises Incorporated
HB	Hampton and Branchville Railroad 
HBGX	HBG Enterprises of Tampa, Incorporated
HBL	Harbor Belt Line
HBRY	Hudson Bay Railway 
HBT	Houston Belt and Terminal Railway
HBWX	Georgia Power Company
HCDU	ER Nahrungsmittel Ges.MBH and Company KG.
HCGX	North American Salt Company
HCIU	Steam Packet Yard
HCLX	Basell Canada, Incorporated
HCMX	Harnischfeger CCorporation
HCPX	Occidental Chemical Corporation
HCRR	Honey Creek Railroad, Incorporated
HCRY	Huron Central Railway
HCSX	Helm Chesapeake LLP
HCTX	Martin Marietta Corporation
HDMU	Hyundai Merchant Marine (America), Incorporated
HDMZ	Hyundai Merchant Marine (America), Incorporated
HDSX	RailAmerica Equipment Corporation
HE	Hollis and Eastern Railroad 
HECX	Hoosier Energy REC, Incorporated
HELX	Helm Financial Corporation
HENU	Provincial Trailer Rentals
HENZ	Provincial Trailer Rentals
HEPX	Hydro One (Ontario)
HEQX	HELM Financial Corporation
HERX	General Electric Rail Services Corporation
HESR	Huron and Eastern Railway Company
HESU	Heritage Environmental Services, Incorporated
HESX	Heritage Environmental Services
HESZ	Heritage Environmental Services, Incorporated
HGPX	Harrison Gypsum Company
HHEX	H and H Engineering Construction Incorporated
HHHX	Public Service Company of Colorado
HIIX	TTX Company - Hamburg Division
HINX	Heritage Inks International Corporation
HIPX	Reliant Energy HLandP
HJBX	H.J. Baker and Bros.,Incorporated
HJCU	HANJIN Container Lines Limited
HJCZ	HANJIN Container Lines Limited
HJVX	HELM Financial Corporation
HKGU	Hong Kong Island
HKIU	Hong Kong Islands Line America S.A.
HKPU	Hong Kong Islands Line
HKTU	Hong Kong Islands Line America S.A.
HKUU	Hong Kong Islands Line America S.A.
HKZZ	Hong Kong Islands Line America S.A.
HLBZ	Hill Brothers Transportation
HLCU	Hapag-Lloyd A G
HLCX	HELM Financial Corporation
hlex	Hunstman Polymers Corporation
HLGX	HELM Financial Corporation
HLLX	HELM Financial Corporation
HLMX	HELM Financial Corporation
HLSC	Hampton Railway Incorporated
HLXU    Hapag-Lloyd A G
HMAX	Huntsman Corporation
HMCR	Huntsville and Madison County Railroad Authority
HMCX	HoltraChem Manufacturing Company, LLC
HMFX	Florida Rock Industries, Incorporated
HMIX	Henkels and McCoy, Inc
HMJX	HELM Financial Corporation
HMR	Hoboken Manufacturers
HMWX	Heckett MultiServ
HN	Hutchinson and Northern Railway 
HNPU	Navale Et Commerciale Havraise Penninsulaire
HOCU	Hoegh Container Lines
HOEU	Hoechst Aktiengesellschaft
HOG	Heart of Georgia Railroad
HOKX	Occidental Chemical Corporation
HOMX	PLM International Incorporated
HONX	Honeymead Products Company (Division of Harvest States Cooperatives)
HOS	Hoosier Southern Railroad
HOWZ	Flex-Van Leasing Incorporated
HOYU	Hoyer GMBH Internationale
HPAX	International Paper Company
HPCX	Hercules, Incorporated
HPIX	Besell USA, Incorporated
HPJX	Helm-Pacific Leasing
HPLX	Exxon Mobil Corporation
HPPX	Huntsman Polypropylene Corporation
HPTD	High Point, Thomasville and Denton Railroad
HPTU	Highway Pipeline
HRCX	Heritage Railcar
HRDX	Silver Star Enterprises, Incorporated
HREX	Heavy Railroad Excavations, Incorporated
HRLU	Hudson Railway Equipment Company
HRLZ	Hudson Railway Equipment Company
HRRC	Housatonic Railroad 
HRRX	On-Track Railcar Services, Incorporated
HRS	Holidaysburg and Roaring Spring Railroad 
HRSX	Harbor Rail Services of California, Incorporated
HRT	Hartwell Railroad 
HS	H and S Railroad
HSCX	Steel Wheels Limited
HSFZ	Atchison, Topeka and Santa Fe Railway
HSIX	Housing Starts Incorporated
HSLU	Haulage Services, Limited
HSRR	Hardin Southern Railroad
HSRZ	H and S Railroad
HTCX	General Electric Rail Services Corporation
HTMU	Hansen and Tidemann, Incorporated
HTSU	High Tech Transport Limited
HTSX	Herzog Transit Services, Incorporated
HTTX	TTX Company
HTW	Hoosac Tunnel and Wilmington
HUBA	Burlington Northern and Santa Fe Railway 
HUDX	Hudson Technologies, Incorporated
HUKU	Huktra (UK) Limited
HUTX	Hutchinson Transportation Company
HWCX	Halliburton Company
HWPX	Hiram Walker and Sons, Incorporated
HYDX	Praxair, Incorporated
HYWX	Georgia Power Company
HZGX	Herzog Contracting Corporation
IAIS	Iowa Interstate Railroad, Limited
IALU	Japan Line, Ltd
IANR	Iowa Northern Railway
IAPX	Air Liquide America Corporation
IASZ	Iowa Interstate Railroad Incorporated
IATR	Iowa Traction Railroad 
IBCX	Indiana Boxcar Corporation
IBNU	Interpool Container Pty Limited
IBPX	Trinity Industries Leasing Company
IBT	International Bridge and Terminal Company
IBYU	Tuscola and Saginaw Bay Railway 
IC	Illinois Central Railroad 
ICCU	ICCU Containers, Incorporated
ICCX	International Catalyst Corporation
ICEU	Inter-Continental Equipment, Incorporated
ICEZ	GATX Capital Corporation
ICG	Illinois Central Railroad 
ICGU	Illinois Central Railroad 
ICGZ	Illinois Central Railroad 
ICHU	Ingetra AG
ICIU	Intermodal Containers Incorporated
ICIX	ICI Americas, Incorporated
ICIZ	Intermodal Containers Incorporated
ICLU	International Cont. Leasing
ICLX	Intercoastal Leasing Incorporated
ICLZ	International Chassis Leasing, Incorporated
ICMU	Interox America
ICMX	Illinois Cereal Mills Incorporated
ICOU	Japan Line Limited
ICPU	Intermodal Container Pool Inc
ICPZ	Intermodal Container Pool Inc
ICRK	Indian Creek Railroad 
ICRU	Ingetra AG
ICRX	Island Creek Corporation
ICRZ	Illinois Central Railroad 
ICSU	Transamerica Leasing, Incorporated
ICSZ	Transamerica Leasing, Incorporated (Union Pacific)
IDCU	Ideal Container
IDOX	U.S. Dept. of Energy, Idaho Operations Office
IDSZ	Industrial Distribution Service, Incorporated
IEAU	Intermodal Equipment Associates
IELZ	Iran Express Lines
IESX	Allient Energy.
IFBX	General Electric Rail Services
IFCX	Interstate Foods Corporation
IFLU	Interflow
IFSU	Interlink Freight Systems
IFWZ	Independent Freightway Incorporated
IGPX	Industrial Steam Products
IHAU	Ihora Chemical Industrial
IHB	Indiana Harbor Belt Railroad 
IHCU	CSD Assignment-temporary
IHRC	Indiana Hi-Rail Corporation
IHSX	Western Vancouver Island Heritage Society (Alberni Pacific Railway)
IICZ	Illinois Central Railroad 
IIIU	III Transportation
IIIZ	III Transportation
IILU	Independent Container Line
IILZ	Independent Container Line
IIRZ	III Transportation
IKCU	Interpool
IKKU	ICCU Containers, Incorporated
IKSU	Transamerica Leasing, Incorporated
ILDX	General Electric Company - Lighting Business Group
ILMU	Flow Line Transport
ILSX	Independent Locomotive Service
ILTU	International Liquid Transport Company Bv
ILW	Illinois Western Railroad
IMCX	IMC Global Operations, Incorporated
IMEX	Indiana and Michigan Electric Company
IMMX	Industrial Minera Mexico, S.A.
IMRL	I and M Rail Link, LLC
IMRR	Illinois and Midland Railroad
IMSX	International Mill Service
IMSZ	Intermodal Systems, Incorporated
IMTX	Ag Processing, Incorporated
IMXZ	Intermodal Express, Incorporated
IN	Indiana Northeastern Railroad 
INCU	Intercontinental Transport B.V. (ICT)
INCZ	Intercontinental Transport B.V. (ICT)
INCZ	Intercontinental Transport B.V. (ICT)
INDU	Dorothea Marine Entreprise and Management
INDX	Indelpro, S.A. de C.V.
INFX	Infineum USA Incorporated
INGX	General Electric Rail Services Corporation
INKU	Interpool Limited
INLX	Incoal Company
INOH	Indiana and Ohio Railroad, Incorporated
INOX	Indiana and Ohio Rail Corporation
INPR	Idaho Northern and Pacific Railroad
INRD	Indiana Railroad
INSU	Intersub Services
INT	Norfolk Southern Railway 
INTU	Interpool Container Pty Limited
INTZ	Interpool Limited
IOCR	Indiana and Ohio Central Railroad
IOCX	Rail Enterprises, Incorporated
IOLU	Textainer Equipment Management (U.S.) Limited
IOPX	MidAmerican Energy Company
IORY	Indiana and Ohio Railway 
IPCU	Independent Container Line
IPCX	International Paper Company
IPEX	Indeck Power Equipment Company
IPLX	Illinois Power Company
IPOX	A and R Leasing, Limited Liability Corporation (L.L.P.)
IPPX	Intermountain Power Agency
IPSX	GATX Financial Corporation
IPWX	Allient Energy
IQIX	Industria Quimica Del letmo S.A. de C.V.
IR	Illinois RailNet, Incorporated
IREX	IRECO, Incorporated
IRLX	Western Railroad Supply, Incorporated
IRMZ	III Transportation
IRRS	International Railroad Systems, Incorporated
IRSZ	Interpool/Rail Services Limited
ISCU	I.S.C. Chemicals Ltd
ISCX	ISC, Incorporated
ISIZ	Intermodal Services, Incorporated
ISLU	Islandia Limited
ISQ	Indiana Southwestern Railway 
ISR	Iowa Southern Railroad 
ISRR	Indiana Southern Railroad
ISSR	ISS Rail, Incorporated
ISSU	Iceland SteamshipCo, Limited
ITAU	Italian Lines
ITAX	Illinois Transit Assembly, Incorporated
ITB	Island Tug and Barge
ITC	Norfolk Southern Railway 
ITCU	Intercontainer
ITCX	International Technologies Corporation
ITDX	SULCOM, Incorporated
ITEU	Compagnia Italiana Investimenti Alternativi
ITGX	ITG Incorporated
ITIU	International Transchem Incorporated
ITIX	Intermodal Technologies, Incorporated
ITKU	Intertank Limited
ITLU	Itel Containers International Corporation
ITLX	General Electric Rail Services Corporation
ITRU	Itel Containers International Corporation
ITSU	Iberhansaetic Transport System
ITSZ	International Transportation Service, Incorporated
ITTX	TTX Company
ITXX	Tiaxcalteca de Industrias, S.A. de C.V.
IU	Indianapolis Union
IVLU	Ivarans Rederei A/S
IXEU	Interox Quimica SA
IXWU	Interox Chemicals Ltd
JACX	Johnstown America Corporation
JAIX	JAIX Leasing Corporation
JALX	JAIX Leasing Corporation
JANX	JAN Incorporated
JBHU	J. B. Hunt Transport, Incorporated
JBHZ	J. B. Hunt Transport, Incorporated
JBPX	PacifiCorp Electric Operations and Idaho Power Company - Jim Bridger Project
JBRX	Bakery Trading Company
JBTU	Jumbotainer BV Barendecht
JCLX	Mid-Am Equipment, Incorporated
JCSX	Heritage Operating L.P.
JDIX	Jim Dobbas, Incorporated
JDMX	Joseph Transportation Incorporated
JDSX	M and C Railcar Leasing, L.L.C.
JE	Joppa and Eastern Railroad 
JECX	Western Resources, Incorporated
JEFW	Jefferson Warrior Railroad 
JEPX	PSI Energy Incorporated
JGLU	Juglinija Lines
JGRU	John G. Russell Transport Limited
JHMX	Alabama Power Company
JHPX	NOVA Chemicals (USA) Incorporated
JJJX	JJ Rail Car Leasing Limited
JJRD	J and J Railroad Incorporated
JKBX	John Kenneth Burbridge
JKL	J.K. Line, Incorporated
JLAU	Japan Line, Limited
JLDU	Japan Line, Limited
JLEU	Japan Line, Limited
JLEZ	Japan Line, Limited
JLHU	Japan Line, Limited
JLLU	Japan Line, Limited
JLLX	LaRoche Industries Incorporated
JLLZ	Japan Line, Limited
JLMU	Japan Line, Limited
JLPU	Japan Line, Limited
JLSU	Japan Line, Limited
JLSZ	Japan Line, Limited
JLTU	Japan Line, Limited
JMHX	J.M. Huber Corporation
JMJZ	J.M.J. Projects, Incorporated
JNSX	JNS Marketing Company, Coastline Rail Service Division
JORX	Jormac, S.A. de C.V.
JOTU	Japan Oil Transportation Company, Limited
JPTU	Daikin Industries
JRCX	GLNX Corporation
JRSX	J.R. Simplot Company
JSCU	Flexi-Van Leasing, Incorporated
JSCZ	Flexi-Van Leasing, Incorporated
JSRC	Jackson and Southern Railroad 
JSSU	China Navigation Company, Limited
JSSX	Jersey Shore Steel Company
JTAX	Trinity Rail Management Incorporated
JTCO	Jacksonville Terminal Company
JTHX	Citicorp Railmark, Incorporated
JTIX	Joseph Transportation Incorporated
JTJX	Joseph Transportation Incorporated
JTLX	Joseph Resources, Incorporated
JTMX	ISG Resources Incorporated
JTPX	Joseph Transportation Incorporated
JTSX	Joseph Transportation Incorporated
JTSZ	Jontri Transportation Company
JTTX	TTX Company
JUGU	Jogolinja
JVRR	Juniata Valley Railroad 
JWAX	General Electric Rail Services Corporation
JWRX	Alabama Power Company
KABX	Canadian Resource Distribution Incorporated
KACX	Kaiser Aluminum and Chemical Corporation
KAIX	Rinker Materials Corporation
KAMX	Kamen, Incorporated
KBSR	Kankakee, Beaverville and Southern Railroad 
KBSZ	Kankakee, Beaverville and Southern Railroad
KCCX	Kennecott Utah Copper Corporation
KCDX	Eastman Kodak Company
KCGX	Southdown Incorporated
KCIX	Nova Chemicals Incorporated
KCLX	Kansas City Power and Light Company
KCPX	Kemira Chemicals Canada, Incorporated
KCRX	Kootenay Central Rail Services Limited
KCS	Kansas City Southern Railway 
KCSU	Kansas City Southern Railway 
KCSZ	Kansas City Southern Railway 
KCTV	KCT Railway Corporation
KCWX	Kimberly-Clark of Canada Limited
KDCX	Eastman Chemical Canada, Incorporated
KDEX	GLNX Corporation
KE	Kansas Eastern Railroad Incorporated
KEBX	Ronald L. Boothman Remainder Trust
KELX	Kellogg Company
KENN	Kennecott Railroad
KEYX	Keywell Corporation
KFGX	Knauf Fiber Glass, GmbH
KFMX	Oils Unlimited
KGCX	INDSPEC Chemical Corporation
KGFX	Kingsford Company
KGLX	Commonwealth Edison Company
KGRX	Kasgro Rail Corporation
KIIX	Koppers Industries Incorporated
KJR	Berkman Rail Services Incorporated (d.b.a Kiski Junction Railroad)
KJRY	Keokuk Junction Railway
KKRR	Knox and Kane Railroad 
KKTU	Kerr Steamship, 'K' Line
KLCU	IBJ Leasing  Company, Limited
KLSC	Kalamazoo, Lake Shore and Chicago Railway
KM	Kansas and Missouri Railway and Terminal Company
KMCU	Mitsui O.S.K. Lines, Ltd
KMCX	Kerr-Mcgee Coal Corporation
KMTU	Hyundai Merchant Marine (America), Incorporated
KMTZ	Hyundai Merchant Marine (America), Incorporated
KMUX	Kershaw Manufacturing Company
KNC	Kingcome Navigation
KNDX	KND Rail Services, Incorporated
KNLU	Nedlloyd Lines
KNOX	Philips Metals, Incorporated
KO	Kansas and Oklahoma Railroad, Incorporated
KPCX	Koppers Industries, Incorporated
KPCZ	K and P Cartage Company
KPGX	Kentucky Processing Company
KPLX	Western Resources, Incorporated
KPXX	Progress Rail Services Corporation
KRIX	General Electric Rail Services Corporation
KRL	Kasgro Rail Lines
KRR	Kiamichi Railroad 
KRSX	Kurguz Enterprises Incorporated, d/b/a Kurguz Railway Services
KSCU	Korea Shipping Corporation
KSCZ	Korea Shipping Corporation
KSRY	Kosclusko and Southwestern Railway
KSW	Kansas and Oklahoma Railroad, Incorporated
KT	Kentucky and Tennessee Railway 
KTR	Kendallville Terminal Railway, Incorporated
KTTX	TTX Company
KTX	ACF Industries Incorporated
KUCX	Kentucky Utilities Company
KVR	Kern Valley Railroad
KWCU	World Container Leasing Incorporated
KWT	K.W.T. Railway, Incorporated
KWUX	Siemens Westinghouse Power Corporation
KXHR	Knoxville and Holston River Railroad 
KYLE	Kyle Railroad 
KYLU	N.Y.K. Line
KYRX	Progress Rail Services Corporation
LA	Kansas City Southern Railway 
LACX	Goodyear Tire and Rubber Company
LAFX	Lafarge Corporation
LAHX	Transportation Equipment, Incorporated
LAJ	Los Angeles Junction Railway
LAKX	City of Lakeland
LAL	Livonia, Avon and Lakeville Railroad Corporation
LANO	Penn Eastern Rail Lines Incorporated
LANU	CATU Containers S.A.
LAPT	Los Angeles Union Passenger Terminal
LARU	Lanan, Incorporated
LBFX	L.B. Foster Company
LBR	Lowville and Beaver River Railroad 
LBWX	Technical Propellants Incorporated
LC	Lancaster and Chester Railway 
LCCX	Liquid Carbonic Corporation
LCEX	Lone Star Industries, Incorporated
LCGX	Cargill, Incorporated, C.G.D. Division
LCHX	LCP Transportation, Incorporated
LCIX	Praxair Incorporated
LCLX	Ledcor Communications Limited
LCPX	General American Marks Company
LCR	Lake County Railroad
LCRX	Lower Colorado River Authority
LCSX	Laclede Steel Company
LCWX	LCP Chemicals-West Virginia, Incorporated
LDAX	Louisiana Agricultural Finance Authority
LDCX	Louis Dreyfus Corporation
LDRR	Louisiana and Delta Railroad, Incorporated
LDSX	Lambton Diesel Specialists, Incorporated
LEFX	Greenville Leasing Company
LEN	Lake Erie and Northern Railway 
LEOX	Golden Foods Incorporated
LER	Logansport and Eel River Short-Line 
LERX	PSI Energy, Incorporated
LEVX	Level Energy, Incorporated
LEWU	Norman Lewis Tankers B.V.
LFCD	Linea Coahuila Durango S.A. de C.V.
LFFZ	Burlington Northern and Santa Fe Railway 
LGEU	CATU Containers S.A.
LGEX	L.G. Everist Incorporated
LGNZ	Burlington Northern and Santa Fe Railway 
LGSX	Mid-American Energy Company
LGTU	Liquid and Gas Transport, Incorporated
LGTX	Logistechs, Incorporated
LHFX	Lehigh Heavy Forge Corporation
LHR	Norfolk Southern Railway 
LHRR	Longhorn Railroad
LHTX	Larsen Farms
LI	Long Island Railroad 
LIBU	Lib Leasing
LINC	Lewis and Clark Railway 
LIRC	Louisville and Indiana Railroad 
LITX	Lite Industries Incorporated
LKRR	Little Kanawha River Rail, Incorporated
LKWR	Lackland Western Railroad 
LLCX	LLCX Incorporated
LLIX	Services Unlimited
LLLX	Louisiana Leasing Limited Of Illinois
LLPX	Locomotive Leasing Partners, LLC
LM	Union Pacific Railroad 
LMCU	World Container Leasing Incorporated
LMIC	Lake Michigan and Indiana Railroad 
LMIX	LORAM Maintenance of Way Incorporated
LMSX	Locomotive Management Services
LMTX	Chartrand's Tank Car Service, Incorporated
LMWX	MHC, Incorporated, Wholly Owned Subsidiary of Conagra, Incorporated
LN	CSX Transportation, Incorporated
LNAC	H and S Railroad 
LNAL	Louisville, New Albany and Corydon Railroad
LNTX	Alliant Energy
LNVT	Landisville Terminal and Transfer Company
LNW	Louisiana and North West Railroad 
LNWX	Locomotives Northwest Limited
LOGU	Societe-Logemafer
LOGX	Linden Leasing Incorporated
LORU	Renzlor Securities Corporation
LOSX	Locomotive Specialists, Incorporated
LOVX	American Colloid Company
LOWU	Management Control and Maintenance S.A.
LPIU	Leasing Partners Int. B.V.
LPN	Longview, Portland and Northern Railway 
LPRU	Losinjska Plovidba Mali Losing
LRAX	Latinoamerican Railroad Association, Incorporated
LRCX	Livingston Rebuild Center, Incorporated
LRDX	Mid-American Energy Company
LRIX	Lake Superior Eastern Rail Industries
LRLX	General Electric Rail Services Corporation
LRMX	Logistics Resource Management
LRPA	Little Rock Port Railroad
LRS	Laurinburg and Southern Railroad Co
LRWN	Little Rock and Western Railway, LP
LRWY	Lackawanna Railway, Incorporated
LS	Luzerne and Susquehanna Railway 
LSBZ	Chicago Rail Link
LSCX	D-H Investors (Relam Auditing Services)
LSEU	One Way Lease Incorporated
LSFZ	Burlington Northern and Santa Fe Railway 
LSI	Lake Superior and Ishpeming Railroad 
LSIU	L.S. Intertank
LSIX	Minnesota Corn Processors Bulk Products Division
LSMX	Progress Rail Services Corporation
LSRC	Lake State Railway 
LSRR	Lone Star Railroad
LT	Lake Terminal Railroad
LTCR	Leelanau Transit Company
LTCX	Praxair, Incorporated
LTEX	L.H.A.G.S. Incorporated d/b/a Larry’s Truck Electric Service
LTIU	Lloyd Triestine Di Navigazione S.P.A.
LTLZ	Burlington Northern and Santa Fe Railway 
LTTX	TTX Company
LTVX	LTV Steel Company
LUBX	Philip Metals Incorporated
LUCX	Services Unlimited
LUNX	General Electric Rail Services Corporation
LUSX	Luscar Limited
LUX	Tosco Corporation
LV	Norfolk Southern Railway 
LVAL	Lackawanna Valley Railroad Corporation
LVRC	Lamoille Valley Railroad 
LVRR	Lycoming Valley Railroad 
LW	Louisville and Wadley Railway 
LWAX	Laidlaw Environmental Services
LWIX	L and W Entertainment Company, Incorporated, dba Milk and Cookies Railroad
LXOH	Lexington and Ohio Railroad 
LXVR	Luxapalila Valley Railroad Incorporated
LYKU	Lykes Brothers Steamship Company, Incorporated
LYKZ	Lykes Brothers Steamship Company, Incorporated
LYNX	Round Butte Products
MAA	Magma Arizona Railroad 
MACX	Mac Acquisitions. L.P.
MADU	Magnum Speditionsgelleshaft GMBH
MAEU	Maersk Line
MAJU	Malaysian International Shipping Corporation
MALX	Mid-America Locomotive and Car Repair, Incorporated
MALZ	American President Lines, Incorporated
MANX	Williams Energy Ventures, Incorporated
MAPX	Williams Energy Ventures, Incorporated
MARX	MidAmerican Energy Corporation
MATU	Matson Navigation Company
MATZ	Matson Navigation Company
MAW	Maumee and Western Railroad 
MAXU	Maxu Containers Limited
MAXX	MidAmerican Energy Company
MAYW	Maywood and Sugar Creek
MB	M and B Railroad L.L.C.
MBCX	M.B.C.X. Leasing L.L.C.
MBIX	Morse Bros. Incorporated
MBKX	MRC Rail Services, L.L.C.
MBLX	Exxon Mobil Corporation
MBPX	MacMillan-Bloedell Incorporated
MBSX	Mid-South Bulk Services, Incorporated
MC	Maine Coast Railroad Corporation
MCCX	Mt. Vernon Transfer Terminal, LLC
MCDX	Sunbelt Cement, Incorporated
MCER	Massachusetts Central
MCEU	Massachusetts Central Railroad Corporation
MCEZ	Massachusetts Central Railroad Corporation
MCHX	Trinity Rail Management Incorporated
MCIX	SSI Mobley Company, Incorporated (M of W)
MCLR	McLaughlin Line Railroad
MCMU	Management Control and Maintenance S.A.
MCMX	M C Rail Services Limited
MCPX	Solutia Incorporated
MCR	McCloud Railway 
MCRR	Monongahela Connecting Railroad
MCRX	Marcus Rail Transport L.L.C.
MCSA	Moscow, Camden and San Augustine Railroad
MCSU	China Ocean Shipping Company
MCTA	Minnesota Central Railroad 
MCTX	Modern Continental Construction Company, Limited
MCVX	Massuchusetts Call/Volunteer Firefighters Assoc.
MDCX	Mexicana De Cobre, S.A. De C.V.
MDDE	Maryland and Delaware Railroad
MDDX	Old Line Holding Company, Incorporated
MDIX	Modern Dispersions, Incorporated
MDKX	Mandak Metal Processors, Division of Gardau MRM Steel Incorporated
MDLR	Midland Terminal Company
MDR	Kansas City Southern Railway 
MDS	Meridian Southern Railway, LLC
MDSZ	Medspan Shipping Service Incorporated
MDTX	Southern Region Industrial Realty Incorporated
MDW	Minnesota, Dakota and Western Railway 
MDWU	Minnesota, Dakota and Western Railway 
MDWZ	Minnesota, Dakota and Western Railway 
ME	Morristown and Erie Railway, Incorporated
MEC	Maine Central Railroad 
MECX	Trinity Rail Management Incorporated
MEFX	MexFresh, LLC
MEFZ	MaxFresh, LLC
MELX	Sunbelt Cement, Incorporated
MEPX	McGraw-Edison Company
MERX	Merco, A Joint Venture
MESX	Mears/CPG, Incorporated
MET	Modesto and Empire Traction Company
METW	Municipality of East Troy, Wisc.
METX	Northeast Illinois Regional Commuter Railroad Corporation
MFCX	First Union Rail
MFFX	M4 Holdings Limited (On-Track Railway Services?)
MGA	Norfolk Southern Railway 
MGGU	Marcevaggi S.P.A.
MGMX	J and J Partnership
MGRI	MG Rail, Incorporated
MGSX	CF Martin Sulphur, LP
MH	Mt. Hood Railroad 
MHAX	U.S. Dept of Interior-Bureau of Mines, Helium Field Operations
MHFX	MHF Logistical Solutions, Incorporated
MHQU	Military Sealift Command HQ Washington DC
MHQZ	Military Sealift Command
MHRX	Mile-High Railcar Services, Incorporated
MHWA	Mohawk, Adirondack and Northern Railroad Corporation
MI	Union Pacific Railroad 
MIDH	Middletown and Hummelstown Railroad
MIDX	MRC Rail Services, L.L.P.
MIEU	MI Engineering Ltd
MILW	Soo Line Railroad
MILX	General Electric Rail Services Corporation
MILZ	Soo Line Railroad
MIMX	Minera Mexico Internacional, Incorporated
MINU	China Ocean Shipping Company
MIPX	Millenium Petrochemicals, Incorporated
MIRX	Regional Recycling, L.L.C.
MIS	Mississippi Central Railroad Corporation
MISS	Mississippian Railway Cooperative, Incorporated
MISU	Malaysian International Shipping Corporation
MJ	Manufacturers' Junction Railway 
MJVU	Merco, A Joint Venture
MKC	McKeesport Connecting Railroad 
MKCX	Morrison Knudsen Corporation
MKIX	Morrison Knudsen Corporation
MKT	Union Pacific Railroad 
MKTT	Union Pacific Railroad 
MKTZ	Missouri Pacific Railroad 
MLCU	N.Y.K. Line
MLCX	American Refrigerator Transit Company
MLEX	Miles Incorporated
MLLX	Basell USA, Incorporated
MLSX	Monsanto Company
MLUX	Solutia Incorporated
MMAX	Martin Marietta Corporation
MMBX	Master Builders, Incorporated
MMCU	CIE Des Messageries Maritimes
MMCX	TransMatrix, Incorporated
MMID	Maryland Midland Railway, Incorporated
MMMU	Fesco Pacific Lines
MMMX	Minnesota Mining and Manufacturing (d/b/a 3M)
MMRR	Mid-Michigan Railroad, Incorporated
MMRX	Double M Ranch Enterprises
MMXZ	Murphy Motor Express, Inc
MNA	Missouri and Northern Arkansas Railroad 
MNAX	C and S Directional Boring, Incorporated
MNBR	MandB Railroad, L.L.C.
MNCW	Metro-North Commuter Railroad
MNCX	Minnesota Corn Processors, Incorporated
MNJ	Middletown and New Jersey Railway 
MNLU	Malaysian International Shipping Corporation
MNLX	Exxon Mobil Corporation
MNN	Minnesota Northern Railroad, Incorporated
MNNR	Minnesota Commercial Railway 
MNPX	Morton International, Incorporated
MNS	Soo Line Railroad
MNTX	Minnesota Transportation Museum, Incorporated
MNWX	Minnesota Dept. of Public Service Weights and Measures Division
MOBX	Exxon Mobil Corporation
MOC	Missouri Central Railroad 
MOFX	Maxton Oil and Fertilizer Company
MOGX	C.W. Brooks Incorporated
MOHX	Solutia, Incorporated
MOLU	Mitsui O.S.K. Lines, Limited
MOLX	Internation Molasses Corporation Limited
MON	CSX Transportation, Incorporated
MONX	Solutia, Incorporated
MOPZ	Flexi-Van Leasing
MORZ	Mitsui O.S.K. Lines, Limited
MOSX	Mosinee Paper Corporation
MOSZ	Mitsui O.S.K. Lines, Limited
MOT	Marine Oil Transportation
MOTC	Montreal Tramways
MOTU	Monsanto
MOTX	Museum of Transportation
MOTZ	Mitsui O.S.K. Lines, Limited
MOWX	Fortaleza Construction Company
MP	Union Pacific Railroad 
MPA	York Railway 
MPCX	Michels Pipeline Construction, Incorporated
MPEX	Motivepower Industries Incorporated
MPIT	Union Pacific Railroad 
MPIX	Motive Power, Incorporated
MPLZ	Union Pacific Railroad 
MPSX	Missouri Public Service
MPTX	Procor Limited
MPU	Missouri Pacific Railroad
MPWX	Muscatine Power and Water
MPZ	Union Pacific Railroad 
MQPX	Millennium Inorganic Chemicals, Incorporated
MR	McCloud Railway 
MRAX	Mineral Range, Incorporated
MRCX	General Electric Rail Services Corporation
MRDX	MidAmerican Energy Company
MREX	Monad Railway Equipment Company
MRI	Mohall Railroad, Incorporated
MRL	Montana RailLink, Incorporated
MRR	Carolina Southern Railroad 
MRS	Manufacturers Railway 
MRSX	Mile-High Railcar Services, Incorporated
MS	Michigan Shore Railroad, Incorporated
MSAZ	National Motor Freight Traffic Assn
MSCI	Mississippi Central Railroad 
MSCU	Mediterranean Shipping Company S.A.
MSCZ	Mediterranean Shipping Company
MSDR	Mississippi Delta Railroad
MSE	Mississippi Export Railroad 
MSIX	Morton International Incorporated
MSN	Meeker Southern Railroad
MSO	Michigan Southern Railroad Incorporated
MSPX	P4 Productions, L.L.C.
MSQU	Military Sealift Command, Bayonne, NJ
MSRC	Kansas City Southern Railway 
MSRW	Mississippian Railway Cooperative, Incorporated
MSTL	Union Pacific Railroad 
MSTR	Massena Terminal Railroad 
MSUU	USPCI, Incorporated
MSV	Mississippi and Skuna Valley Railroad 
MSWY	Minnesota Southern Railway, Incorporated
MT	Mississippi and Tennessee RailNet, Incorporated
MTAX	MTAX Corporation
MTCO	Macon Terminal Company
MTCX	Mallard Transportation Company
MTCZ	Mayflower Transit and Storage
MTDX	Midwest Transportation and Development Company
MTIU	Welfit Oddy (PTY) Limited
MTIZ	American Marine Industries
MTLU	Montgomery Tank Lines
MTLX	Metal Link International, LLC
MTMU	March, Ltd
MTNX	Rocky Mountain Transportation Services
MTPX	Montana Power Company
MTR	Youngstown and Southern Railway 
MTRX	TransMatrix, Incorporated
MTSU	Marine Transport Service Inc
MTTX	TTX Company
MTZ	Mitsui O.S.K. Lines, Limited
MUSC	Memphis Union Station Company
MVRY	Mahoning Valley Railway 
MVT	Mt. Vernon Terminal
MWAX	Martin Marietta Materials, Incorporated
MWCL	Midwest Coal Handling, Incorporated
MWCX	Midwest Railcar Corporation
MWHX	Markwest Hydrocarbon Partners, Limited
MWLX	Midwest Locomotive Leasing and Sales, Incorporated
MWLZ	Madrigal-Wan Hai Lines Corporation
MWMX	Golden Leasing
MWRC	Mount Washington Railway 
MWRL	Hillvista Investment Company, d/b/a Molalla Western Railway
MWRR	Montana Western Railway 
MWRX	Midwest Rail Holdings, Incorporated
MWSX	General Electric Rail Services Corporation
MXLU	Mexican Line
MZIZ	Marko B Zanovich
NABU	Ecst Container Services and Trading GMBH.
NACR	Nashville and Ashland City Railroad
NACX	General Electric Rail Services Corporation
NADU	North American Domestic Container Corporation
NADX	General Electric Rail Services Corporation
NADZ	North American Domestic Container Corporation
NAFX	General Electric Rail Services Corporation
NAHX	General Electric Rail Services Corporation
NALU	Norwegian American Lines
NALZ	Neptune Orient Lines, Limited
NAMX	NAMX Leasing Company
NAP	Narragansett Pier Railroad 
NAPX	North American Plastics Incorporated
NAR	Canadian National Railway
NATX	General Electric Rail Services Corporation
NATZ	North American Transportation
NAUG	Naugatuck Railroad 
NAVE	Navajo Express Incorporated
NBCX	Nebraska Boiler Company
NBEC	New Brunswick East Coast Railway Company, Incorporated
NBER	Nittany and Bald Eagle Railroad 
NBIX	Bombardier Capital Rail, Incorporated
NBNR	Nicolet Badger Northern Railroad
NBSR	New Brunswick Southern Railway 
NC	CSX Transportation, Incorporated
NCAU	Colonial/Atl (Bermuda) Limited
NCAZ	NCA Leasing Company/Div. G.H. Leasing Corporation
NCBU	Northbrook Container Leasing
NCDU	Burlington Northern and Santa Fe Railway
NCEU	XTRA Intermodal
NCEX	National Car Systems, Incorporated
NCFX	General Electric Rail Services Corporation
NCGU	Genstar Corporation
NCGU	TIP Intermodal Services
NCHU	TIP Intermodal Services
NCHX	General Electric Rail Services Corporation
NCIU	North American Container System (TRAC Lease Incorporated)
NCIX	Nova Chemicals Incorporated
NCLU	China Ocean Shipping Company
NCLX	Nova Chemicals Incorporated
NCPR	North Carolina Ports Railway Commission
NCQU	TIP Intermodal Services
NCRC	Nebraska Central Railroad 
NCRU	TIP Intermodal Services
NCRX	General Electric Rail Services Corporation
NCRY	Northern Central Railway
NCTU	Northbrook Container Leasing
NCTX	PLM International, Incorporated
NCUU	TIP Intermodal Services
NCUX	Transport Capital Rail Partners LLC
NCVA	North Carolina and Virginia Railroad
NCWX	Northwest Container Services, Incorporated
NCYR	Nash County Railroad Corporation
NDCR	N.D.C. Railroad 
NDM	Ferrocarriles Nacionales de Mexico
NDMZ	National Railways of Mexico (Ferrocarriles Nacionales)
NDYX	First Union Rail
NEAX	Nemic Leasing Corporation
NECR	New England Central Railroad Incorporated
NECX	Mid-Am Equipment, Incorporated
NEFX	Northeast Corridor Foundation
NEGS	New England Southern Railroad 
NEKM	Northeast Kansas and Missouri Division, Mid-Michigan Railroad Incorporated
NELU	New England Express Lines
NEMX	Ogden Martin Systems of Montgomery
NENE	Nebraska Northeastern Railway 
NEPU	Neptune Orient Lines, Limited
NERR	Nashville and Eastern Railroad
NERX	Transportation Management Services, Incorporated
NERZ	General Electric Capital Corporation
NESX	Nestle Brands FoodService Company, Division of Nestle Food Company
NETU	Netumar Lines
NETX	Nemic Leasing Corporation
NFLZ	Flexi-Van Leasing
NFPX	Newaygo Forest Products Limited
NGOU	Scoa Incorporated
NGTX	Suburban Propane L.P.
NHCR	New Hampshire Central Railroad
NHN	New Hampshire Northcoast Corporation
NHRR	New Hope and Ivyland Railroad
NHVT	New Hampshire and Vermont Railroad 
NHVX	East Carolina Chapter National Railway Historical Society
NICD	Northern-Indiana Commuter Transportation District
NICU	NIC Leasing Incorporated
NIFX	General Electric Rail Services Corporation
NIHX	General Electric Rail Services Corporation
NIKX	N.I.K. Non-stock Marketing Cooperative
NIRX	General Electric Rail Services Corporation
NIWX	Northern Illinois and Wisconsin Railway Corporation
NJ	Delaware and Hudson Railway 
NJTR	NJ Transit Rail Operations
NKCR	Nebraska, Kansas and Colorado RailNet, Incorporated
NKP	Norfolk Southern Railway 
NLAX	National Aeronautics and Space Administration (NASA)
NLG	Kansas City Southern Railway 
NLLX	Northern Line Layers Incorporated
NLPX	Perkins Motor Transport, Incorporated
NLSU	Nautilus Leasing Services, Incorporated
NLSX	National Starch and Chemical Company
NLSZ	Trans Ocean Chassis Corporation
NLTX	National Starch and Chemical Company, Member ICI Group, Vinamul Polymers
NMCX	National Machinery Company
NMLX	National Metal Corporation Limited
NN	Northern Nevada Railroad Corporation
NNIU	Nautica Line
NNPU	Nigerian National Petroleum Corporation
NNSX	Newport News Shipbuilding and Dry Dock Company
NOFU	Nodfos
NOGC	New Orleans and Gulf Coast Railway 
NOKL	Northwestern Oklahoma Railroad Co
NOKZ	First Union Rail
NOLR	New Orleans Lower Coast Railroad, Incorporated
NOLU	Neptune Orient Lines, Limited
NOLZ	Neptune Orient Lines, Limited
NOPB	New Orleans Public Belt Railroad
NORX	Northern Indiana Public Service Company
NOSU	Neptune Orient Lines, Limited
NOT	New Orleans Terminal
NOW	Northern Ohio and Western Railway Limited
NP	Burlington Northern Santa Fe Railway 
NPB	Norfolk and Portsmouth Belt Line Railroad 
NPCX	Equistar Chemicals LP
NPIX	Chem-Nuclear Systems, L.L.C.
NPPX	Nebraska Public Power District
NPR	Northern Plains Railroad, Incorporated
NPRX	Yakima Interurban Lines Assn.
NPSU	Nigel Parks Limited
NPT	Portland Terminal R.R. Company (Oregon)
NPTU	Neptune Leasing, Incorporated
NPTX	Newport Steel Corporation
NRBX	Fruit Growers Express Company
NRCU	Nedlloyd Road Cargo B.V.
NRCX	Northern Rail Car Corporation
NRDX	Nordic Warehouse Incorporated
NREX	National Railway Equipment Company
NRHX	National Railway Historical Society
NRI	Nebkota Railway, Incorporated
NRIX	National Refrigerants, Incorporated
NRLX	Bombardier Capital Rail Incorporated
NRPX	Northrop Corporation
NRR	Nobles Rock Railroad
NRSU	Nippon Riku-un Sangyo Company
NS	Norfolk Southern Railway 
NSAX	National Steel Corporation
NSCX	National Steel Car Limited
NSFZ	Norfolk Southern Railway Corporation
NSHR	North Shore Railroad 
NSL	St. Lawrence and Raquette River Railroad
NSLU	Norasia Serviceslway Company
NSLZ	Nestle Transportation Company
NSPX	Northern States Power Company
NSPZ	Norfolk Southern Railway Company
NSR	Newburgh and South Shore Railroad 
NSSX	National Salvage and Service Corporation
NSTX	North Star Steel Company
NSXZ	Norfolk Southern Railway 
NSZ	Norfolk Southern Railway 
NTIU	Germanischer Lloyd
NTKX	VAE Nortrak North America, Incorporated
NTLX	Nashtex Leasing Incorporated
NTNU	National Container Network, Incorporated
NTR	Mississippi Central Railroad 
NTRX	NTL Transportation Corporation
NTRY	Nimishillen and Tuscarawas, LLC
NTTX	TTX Company
NUCX	Nucor Steel Crawfordsville - Division of Nucor Corporation
NUSU	Neptune Orient Lines, Limited
NVCX	Nevada Cement Company
NVPX	Nevada Power Company
NVR	Bangor and Aroostook Railroad 
NVRR	NAPA Valley Railroad 
NW	Norfolk Southern Railway 
NWAX	BP Global Special Products (America) Incorporated
NWCX	Northwest Container Services, Incorporated
NWR	Nashville and Western Railroad Corporation
NWTX	North West Timber, Limited
NWTZ	NW Transport
NWX	General Electric Rail Services Corporation
NWZ	Norfolk Southern Railway 
NXLZ	National Xpress Logistics, Incorporated
NYA	New York and Atlantic Railway 
NYAU	N.Y.K. Line
NYBU	N.Y.K. Line
NYC	CSX Transportation Incorporated
NYCH	New York Cross Harbor Railroad Terminal Corporation
NYCX	New York Central Lines LLC
NYGL	New York and Greenwood Lake Railway
NYKU	N.Y.K. Line
NYKZ	N.Y.K. Line
NYLE	New York and Lake Erie Railroad 
NYLU	Japan Line, Limited
NYOG	New York and Ogdensburg Railway 
NYSW	New York, Susquehanna and Western Railway Corporation
NZCU	Shipping Corporation Of New Zealand Ltd
NZSU	Shipping Corporation Of New Zealand Ltd
OAR	Old Augusta Railroad 
OCCU	ATS Container Leasing S.A.
OCCX	Occidental Chemical Corporation
OCFX	Owens Corning Fiberglass
OCLU	Overseas Containers, Limited
OCNU	Ocean Lines Incorporated
OCPX	Oxy Vinyls, LP.
OCR	Oklahoma Central Railroad 
OCRR	Ottawa Central Railway
OCRX	Oklahoma Central Railroad
OCSU	Scripps Institute of Oceanography
OCTL	Oil Creek and Titusville Lines
OCTR	Octoraro Railway Incorporated
OCTX	Octel America, Incorporated
ODTX	Oil-Dri Corporation of America
OFCX	Residco
OFOX	Residco
OFSX	Tucson Electric Power Company
OGEE	Ogeechee Railway 
OGEX	Oklahoma Gas and Electric Company
OGSX	Alliant Energy
OHCR	Ohio Central Railroad, Incorporated
OHFX	Fluor Daniel Fernald
OHIC	Ohi-Rail Corporation
OHKU	Ohka American Incorporated USA
OHOX	U.S. Department of Energy Ohio Field
OHPA	Ohio and Pennsylvania Railroad 
OHRY	Owego and Harford Railway, Incorporated
OJGX	Oscar J. Glover
OKAN	Okanagan Valley Railway 
OKCX	Lone Star Industries, Incorporated
OKKT	Union Pacific Railroad 
OLAU	Occidental Chemical Corporation Echem and Speciality Products
OLB	Omaha Lincoln and Beatrice Railway 
OLDX	Old Line Holding Company, Incorporated
OLLU	Ocean Leasing Limited
OLNX	Olin Corporation
OLO	Ontario L'Orignal Railway Incorporated
OLYR	Olympic Railroad 
OLYU	Olympic Container Corporation
OLYZ	Showa Line, Limited
OMAX	Omaha Public Power District
OMID	Ontario Midland Railroad Corporation
OMLX	OmniTRAX Leasing, Limited
ONCT	Ontario Central Railroad Corporation
ONSX	Oglebay Norton Industrial Sands, Incorporated
ONT	Ontario Northland Railway
ONTA	Ontario Northland Railway
ONTX	On-Track Railcar Services, Incorporated
OOCZ	Orient Overseas Line, Incorporated
OOLU	Orient Overseas Container Line, Incorporated
OOOX	Osborne, Incorporated
OOUU	Orient Overseas Line, Incorporated
OPE	Oregon, Pacific and Eastern Railway 
OPIX	Equistar Chemicals LP
OPPX	Omaha Public Power District
OPR	Oregon Pacific Railroad 
OPSX	Public Service Company of Oklahoma
OPT	Orange Port Terminal Railway
OPX	Ohio Power Company
ORA	Ormet Railroad Corporation
ORCU	BSL Transport
OREX	Oregon Department of Agriculture
OROX	U.S. Dept. of Energy, Oak Ridge Operations
ORR	Osage Railroad
OSCZ	Intermodal Services, Incorporated
OSRR	Ohio Southern Railroad Incorporated
OSRX	Ontario Southland Railway Incorporated
OSSU	Eurovos B.V.
OTCO	Owensville Terminal Company
OTDX	Greenbrier Leasing Corporation
OTR	Oakland Terminal Railway
OTRX	On-Track Railway Services, Limited
OTSX	On-Track Rail Services, LLC
OTT	Ottumwa Terminal Railroad 
OTTX	TTX Company
OTVR	Otter Tail Valley Railroad 
OUCH	Ouachita Railroad
OUCX	Orlando Utilities Commission
OURD	Ogden Union Railway and Depot Company
OVEX	Ohio Valley Electric Company
OVNZ	Overnite Transportation Company
OWIX	Old World Transportation, Limited
OWLU	Ocean World Lines, Incorporated
OWSX	Oil Well Supply Co (1980) Limited
OXYU	Eurotainer U.S., Inc
PACX	Plasser American Corporation
PAE	Norfolk Southern Railway 
PAIX	Pol-Tex Internation Division of Poly-America
PAL	Paducah and Louisville Railroad
PAM	Pittsburgh, Allegheny and McKees Rocks Railroad 
PAPX	Pennsylvania Pullmans Incorporated
PARX	Pan American Railway 
PASX	Pacer International, Incorporated, dba Pacer Stacktrain
PATZ	Pacer Stacktrain
PBFX	IBP, Incorporated
PBL	Philadelphia Belt Line Railroad 
PBLU	Containers and Pressure Vessels Ltd
PBLX	MHC, Incorporated, Wholly Owned Sub. of Con Agra, Incorporated
PBMZ	Pattison Bros. Mississippi River, Incorporated
PBNE	Philadelphia, Bethlehem and New England Railroad 
PBR	Patapsco and Back Rivers Railroad
PBRR	Pine Belt Southern Railroad 
PBSZ	CSX Intermodal, Incorporated
PBVR	Port Bienville Railroad
PC	Norfolk Southern Railway 
PCAX	Pioneer Chlor Alkali Company, Incorporated
PCC	Palouse River and Coulee City Railroad Incorporated
PCCX	Peabody Coal Company (Captive Service)
PCHX	Poole Chemical, Incorporated
PCIX	ACF Industries Incorporated
PCJU	Puma Containers (Jersey) Limited
PCLU	Maritime Container Lines, Limited
PCN	Point Comfort and Northern Railway
PCNZ	Flexi-Van Leasing, Incorporated
PCRX	Pacer Rail Services, L.L.C
PCSX	PLM International, Incorporated
PCTX	Pioneer Cement Company of Texas
PCY	Pittsburgh, Chartiers and Youghiogheny Railway 
PDIZ	Produce Distributors, Incorporated
PDQX	Castle Capital Corporation
PDRR	Pee Dee River Railroad Corporation
PE	Consolidated Rail Corporation
PECX	General Electric Rail Services Corporation
PELX	Premier Equipment Leasing Company
PELZ	Premier Equipment Leasing Incorporated
PENX	Penford Products Company
PEPX	Potomac Electric Power Company
PERU	Maxu Containers Limited
PERX	Perini Corporation
PF	Pioneer and Fayette Railroad 
PFMX	Perdue Transportation Incorporated
PFRX	Parks Propane and Appliance Incorporated
PFSX	Private Fuel Storage, LLC
PGCX	Peoples Gas System, Incorporated
PGDX	General Electric Rail Services Corporation
PGE	BC Rail Limited
PGEX	Portland General Electric Company
PGHX	Trinity Rail Management Incorporated
PGLZ	Prudential Grace Lines
PGR	Progressive Rail, Incorporated
PGRV	Pigeon River Railroad 
PGRX	AmeriGas Propane L.P.
PGTX	Trinity Rail Management Incorporated
PHD	Port Huron and Detroit Railroad 
PHL	Pacific Harbour Line, Incorporated
PHRU	Nigeria National Petroleum Corporation
PI	Paducah and Illinois Railroad
PICK	Pickens Railway 
PICU	Pickfords Removals Ltd
PIFX	Pifer Tank Car Company
PIGZ	Tranfax-Division of Fresh Intermodal Transport Incorporated
PIR	Pittsburgh Industrial Railroad, Incorporated
PIVX	Pivotal Enterprises Corporation
PJR	Port Jersey
PJRL	Penn Jersey Rail Lines, Incorporated
PKHP	Pickens Railway Co-Honea Path Div.
PKSX	Peter Kiewit Sons, Incorporated
PLCX	General Electric Rail Services Corporation
PLE	Youngstown and Southern Railway 
PLEX	PLM International, Incorporated
PLHZ	Pole Star Transport, Incorporated
PLIX	Polymont Plastics Corporation
PLIZ	P and L Intermodal Corporation
PLLU	Polynesia Line Limited
PLLZ	Polynesia Line Limited
PLMX	PLM International, Incorporated
PLNZ	Penske Logistics
PLRU	Pic Leasing Corporation
PLRX	PIC Trans, Incorporated
PLUX	Pulser Equipment Corporation
PLW	PL and W Railroad Incorporated
PLWX	General Electric Rail Services Corporation
PMAX	PMA Transportation Corporation
PMGX	Pacific Metal Limited
PMIX	Pittman Moore, Incorporated
PMLX	Prairie Malt Limited
PMOX	Phillip Morris, Incorporated
PNHX	GATX Financial Corporation
PNR	Panhandle Northern Railroad 
PNS	Philadelphia and Norfolk Steamship
PNSX	Chem-Nuclear Systems, LLC
PNTX	Great Lakes Chemical Corporation, Speciality Chemicals
PNW	Prescott and Northwestern Railroad
PNWR	Portland and Western Railroad Incorporated
PNWU	Pacific Northwest Equipment Incorporated
POAK	Port of Oakland Railway
POHC	Pittsburgh and Ohio Central Railroad
POLU	Polish Ocean Lines Gyndia American Lines
POLX	PolyOne Company
POLZ	Polish Ocean Lines
POTB	Port of Tillamook Bay Railroad
POTX	General American Marks Company
POV	Pittsburgh and Ohio Valley Railway
POVA	Pend Oreille Valley Railroad
POWX	Vinings Industries, Incorporated
PPAX	PCS Phosphate Company, Incorporated
PPCX	AAPRCO administered list of privately owned passenger cars
PPGX	PPG Industries, Incorporated
PPHX	PCS Phosphate Company
PPLX	Pennsylvania Power and Light Company
PPNX	PCS Phosphate Company
PPRX	Phillips Petroleum Company
PPSX	Pioneer Pipe and Supply Company, Incorporated
PPTX	PCS Phosphate Company
PPU	Peoria and Pekin Union Railway 
PPU	Peoria and Pekin Union Railway 
PQX	PQ Corporation
PRAX	First Union Rail
PRBX	Trinity Rail Management Incorporated
PRCX	Prairie Coal Limited
PRDX	Pacific Rail Dismantling Services, Incorporated
PREU	Prime, Incorporated
PREX	Pioneer Railroad Equipment Company
PREZ	Prime, Incorporated
PRGX	Cargill, Incorporated
PRL	Penn Eastern Rail Lines, Incorporated
PRLX	Private Rail Limited
PRMU	Puerto Rican Maritime Shipping Authority
PRMZ	Puerto Rican Maritime Shipping Authority
PROX	Procor Limited
PRPX	Pacific Railroad Preservation Association
PRR	Norfolk Southern Railway 
PRSL	Pennsylvania Lines LLC
PRSX	Progress Rail Services Corporation
PRT	Parr Terminal Railroad
PRTD	Portland Traction Company
PRV	Pearl River Valley Railroad 
PRWX	Railway Entertainment Services, Limited
PRY	Pioneer Industrial Railway 
PRYL	Port Royal Railroad
PS	Pittsburg and Shawmut Railroad 
PSAP	Puget Sound and Pacific Railroad 
PSAZ	Pacific Northwest Perishable ShippersAssoc.
PSBU	Contship
PSCX	Public Service Company of Colorado
PSFL	Puget Sound Freight Lines
PSFZ	Flexi-Van Leasing, Incorporated
PSIX	PSI Energy, Incorporated
PSLL	Plymouth Short Line, Limited
PSNU	Pacific Steam Navigation Company
PSOX	Puget Sound Power and Light Company
PSPX	Phillips Petroleum Company
PSR	Pittsburg and Shawmut Railroad Incorporated
PSTX	Joseph Transportation Incorporated
PT	Peninsula Terminal Company
PTC	Plainview Terminal Company
PTDX	ABB Power T and D Company, Incorporated
PTEX	General Electric Rail Services Corporation
PTIZ	Parkway Transport Incorporated
PTLX	General Electric Rail Services Corporation
PTM	ST Rail System
PTOX	PTO Incorporated, LLC
PTR	Port Terminal Railroad of South Carolina
PTRA	Port Terminal Railroad Association
PTRC	Portland Terminal Railroad (Oregon)
PTRR	Port Townsend Railroad Incorporated
PTRU	South American Petrolite De Venezuela
PTRX	Petrolite Corporation
PTSX	Petrosol International, Incorporated
PTTX	TTX Company
PTXX	PTS Incorporated
PUBX	Publicker Industries, Incorporated
PUCC	Port Utilities Commission of Charleston South Carolina
PVCX	BHP Cooper Incorporated
PVFX	General Electric Rail Services Corporation
PVGX	General Electric Rail Services Corporation
PVRR	Pioneer Valley Railroad 
PVRX	Pook Valley Rail System
PVS	Pecos Valley Southern Railway 
PW	Providence and Worcester Railroad
PWCX	Inland Cement Limited
PWRZ	Providence and Worcester Railroad 
PWV	Norfolk Southern Railway 
PXCU	Phoenix Container Liners Limited
PXCZ	Phoenix Container Liners Limited
QBT	Quincy Bay Terminal Company
QC	Canadian Pacific Railway
QCCX	Equistar Chemicals LP
QCR	Quebec Central Railway 
QFFX	Quimica Fluor, S.A. de C.V.
QGRY	Quebec Gatineau Railway, Incorporated
QOCX	Quaker Oats Company
QOHX	Quaker Oats Company
QOPX	General Electric Rail Services Corporation
QOTX	Great Lakes Chemical Corporation, Speciality Chemicals
QPCX	General Electric Rail Services Corporation
QRC	Quebec Railway Corporation Incorporated (SCFQ)
QRR	Quincy Railroad 
QRSX	Quality Railway Services and Supply Company
QSMX	Quaker State Corporation
QSR	Bangor and Aroostook Railroad  (Quebec Southern)
QTTX	TTX Company
QUAX	Quality Rail Services, LLC
RACX	General Electric Rail Services Corporation
RAHX	Rohm and Haas Company
RAIX	Union Carbide Corporation
RAPX	Rapco Transportation Company
RARW	Rarus Railway 
RASX	C.A. Rasmussen
RATX	RailTex Service Company
RAWX	Platte River Power Authority
RAX	RPI-AAR Cooperative Test Program
RBBX	Ringling Bros. and Barnum and Bailey
RBCU	Railbridge Corporation
RBCX	Rail-Bridge Corporation
RBLX	Brent C. Lewis
RBMN	Reading Blue Mountain and Northern Railroad 
RBOX	TTX Company
RCIZ	Radich Construction Company
RCMX	Services Unlimited
RCOX	Amoco Oil Company
RCPX	Southern Illinois Railcar, Company
RCRR	Red Coat Road and Rail Limited
RCRX	Reagent Chemical and Research Incorporated
RCRY	Raritan Central Railway, LLC
RCSZ	Rail Container Services, Incorporated
RCTX	Railwest Canada, Incorporated
RCWZ	Union Pacific Railroad 
RDCX	Regional Disposal Company
RDG	Norfolk Southern Railway 
RDIX	Rapid Industrial Plastics Company
RDMZ	Transamerica Leasing Incorporated
RDSZ	CSX Transportation, Incorporated
RDWZ	Roadway Express, Incorporated
REAU	Transamerica Leasing Incorporated
REAZ	TIP Intermodal Services
RECX	Central Louisiana Electric Company
REDX	Miron/USA Limited
REDZ	REDON Incorporated
RELX	Relco Tank Line Incorporated
RESX	Rescar, Incorporated
RFMX	Caldwell-Baker Company
RFP	CSX Transportation, Incorporated
RFPU	CSX Transportation, Incorporated
RFPZ	CSX Transportation, Incorporated
RFRX	Rick Franklin Corporation
RGCX	Rio Grande Chemical Sales Company
RGEX	Royal Gorge Industries, LLC
RGIX	Republic Gas and Utilities Corporation
RGRX	Rio Grande Railcar Company, Incorporated
RGTU	Denver and Rio Grande Western Railroad 
RGTX	Residco
RGTZ	Union Pacific Railroad 
RGWZ	Transamerica Leasing, Incorporated
RHRX	Rahr Malting Company
RICU	Rinnen GMBH and CO KG Internationale Spedition
RICX	Rockwell International Corporation
RIIX	Reilly Industries Incorporated
RILX	Garvey International Incorporated, Garvey Grain Division
RIMX	Ready Mixed Concrete Company
RIRX	Southeastern Industrial Enterprises, Incorporated
RJCL	R.J. Corman Railroad / Cleveland line
RJCM	R.J. Corman Railroad / Memphis Line
RJCN	R.J. Corman Railroad / Allentown Lines, Incorporated
RJCP	R.J. Corman Railroad / Pennsylvania Lines, Incorporated
RJCR	R.J. Corman Railroad / Bardstown Line
RJCW	R.J. Corman Railroad / Western Ohio Line
RJRX	ACF Industries Incorporated
RKCX	Knox Kershaw Incorporated
RKTZ	Transamerica Leasing
RL	Rutland Line, Incorporated
RLEX	Relco Locomotives, Incorporated
RLGN	RaiLink Canada Limited, d/b/a RaiLink Mackenzie Northern (RailAmerica)
RLHH	RaiLink Canada Limited, d/b/a RaiLink Southern Ontario (RailAmerica)
RLIX	Rail Link, Incorporated
RLK	RaiLink Canada Limited, d/b/a RaiLink Ottawa Valley (RailAmerica)
RLMX	Joseph Transportation Incorporated
RLTX	Randolph L. Johnston
RMAX	Rocky Mountain Rail Society
RMCU	RMC (Trancoleasing) Limited
RMCX	Reynolds Metals Company
RMDX	American Refrigerator Transit Company
RMGX	Railcar Limited
RMIU	Mi Environmental Services
RMIX	Ready Mix Concrete Company
RMLU	Royal Mail Lines Limited
RMMX	Railcar Limited
RMPX	Railcar Limited
RMPZ	Transamerica Leasing
RMRR	Rocky Mountain Railcar and Railroad, Incorporated
RMRX	Rocky Mountaineer Railtours
RMSX	Harsco Track Technologies
RNDX	ACF Industries Incorporated Amcar Div.
ROBZ	Robco Transportation, Incorporated
ROCX	Rocky Mountain Transportation Services
ROEZ	Roehl Transport Incorporated
ROIX	Shintech Incorporated
ROLU	Ro-Lo Pacific Line
ROPX	Rail Operators, Incorporated
ROYU	Royal Netherlands
RPBX	Rhodia Incorporated
RPCX	Railroad Passenger Car Alliance
RPIX	Rhone-Poulenc Incorporated
RPMZ	Transamerica Leasing Incorporated
RQAX	RailQuest America
RRBX	Rampart Range Corporation
RRCI	Redmont Railway 
RRCO	Rochelle Railroad 
RRCX	Radar Railcar, Incorporated
RREX	General Electric Rail Services Corporation
RRIU	Triton Containers
RRIX	Rader Railcar II, Incorporated
RRRR	Rock and Rail, Incorporated
RRRX	Rex Leasing, Incorporated
RRVW	Red River Valley and Western Railroad
RS	Roberval and Saguenay Railway 
RSB	Rochester Subway
RSFZ	Transamerica Leasing Incorporated
RSIZ	Rail Services, Incorporated
RSLX	Resolution Performance Products
RSM	Railroad Switching Service of Missouri, Incorporated
RSNR	Red Springs and Northern Railroad
RSOX	General Electric Rail Services Corporation
RSP	Roscoe, Snyder and Pacific Railway
RSPZ	Transamerica Leasing Incorporated (Union Pacific)
RSR	Rochester and Southern Railroad
RSRZ	Norfolk Southern Railway 
RSS	Rockdale, Sandow and Southern Railroad 
RSSX	Railservice, Incorporated
RSUX	Riley Stoker Corporation
RSWZ	Transamerica Leasing Incorporated
RSYX	Refined Sugars Incorporated
RT	River Terminal Railway 
RTCX	Union Tank Car Company
RTCZ	Rocor Freight Services
RTEX	Rail Trusts Equipment Incorporated
RTIX	RTI - Railroad Services
RTLX	Relco Tank Line Incorporated
RTMX	General Electric Rail Services Corporation
RTMZ	TIP Intermodal Services
RTPX	Savage Tolk Energy Services
RTRU	Road Trailer Rentals Incorporated
RTRX	Rocky Mountain Transportation Services
RTRZ	Road Trailer Rentals Limited
RTSX	Rail Transportation Services Incorporated
RTTX	TTX Company
RTTZ	Union Pacific Railroad 
RUDX	Ruddy Tank Car Company
RUSX	First Union Rail
RUT	Vermont Railway, Incorporated
RVIX	Rail Venture
RVLZ	Transamerica Leasing
RVPR	Riverport Railroad, LLC
RVSC	Rio Valley Switching Company
RWCX	RWC Incorporated
RWSX	Scherer Electric Generating Facility
RWTX	Railwest US, Incorporated
RWTZ	Satellite Intermodal Express
RXXZ	TIP Intermodal Services
RYAN	RYAN Industries
RYCU	De Rycke Vloeitransport B.V.
RYNX	RYAN Industries
SA	Norfolk Southern Railway 
SAFX	Safety-Kleen Corporation
SAL	CSX Transportation, Incorporated
SALX	General American Marks Company
SAMU	South African Marine Corporation
SAMX	Cargill, Incorporated
SAN	Sandersville Railroad 
SANU	Samband Islenzkra Samvinnufelag
SANX	San Angelo Tank Car Line
SAPT	Savannah Port Terminal Railroad Incorporated
SARX	Southern Appalachia Railway Museum
SATX	City Public Service Board of San Antonio, Texas
SAUX	Sauvage Gas Company
SAVX	Savannah Electric and Power Company
SAW	South Plains Switching Limited
SAWU	Swedish Atlantic-Wilshelsen Line
SAWX	Sawyer Gas of Jacksonville Incorporated
SAZX	Saz Transportation Corporation
SB	South Buffalo Railway 
SBC	Ferrocarriles Nacionales de Mexico
SBD	CSX Transportation, Incorporated
SBDZ	CSX Transportation, Incorporated
SBGU	Marine Transportation Svcs. Sea-Barge Group
SBKU	Shinko Pantec Company, Incorporated
SBLN	Sterling Belt Line Railway
SBLX	Sunbelt/Chlor/Alkali Partnership
SBRR	Stourbridge Railroad 
SBVR	South Branch Valley Railroad
SCBB	Somerset Terminal Railroad, Incorporated
SCBG	Santa Cruz, Big Trees and Pacific Railway 
SCBX	Standbridge Color Corporation
SCEX	Southern California Edison Company
SCFE	South Central Florida Express Incorporated
SCGX	General Electric Rail Services Corporation
SCHX	Rhodia Incorporated
SCIU	Sea Containers Incorporated
SCIX	General Electric Rail Services Corporation
SCJX	Chevron Phillips Chemical Company, LP
SCKX	Northern Coal Transportation Company
SCL	CSX Transportation, Incorporated
SCLU	Sea Containers Incorporated
SCLX	CanadianOxy Industrial Chemicals Limited Partnership
SCMX	Shell Oil Company
SCNX	South Carolina Electric and Gas Company
SCNZ	Shipping Corporation Of New Zealand
SCOX	Scoular Company
SCOZ	Crab Orchard and Egyptian Railroad
SCPU	Alnery No. 954 Limited (U.K.)
SCPX	Shell Oil Company
SCRF	South Carolina Central Railroad
SCRX	Santa Clarita Railway d/b/a James Clark and Company
SCST	Seaboard Transportation Company
SCSX	CIT Group/Capital Finance Incorporated
SCT	Sioux City Terminal Railway
SCTR	SCTRR, LLC (South Central Tennessee Railroad)
SCTU	Shirlstar Container Transport Limited
SCWX	South Carolina Public Service Authority
SCWZ	Sea Containers
SCXF	South Central Florida Express, Incorporated
SCXU	Alnery No. 954 Limited (U.K.)
SCXY	St. Croix Valley Railroad 
SCYX	First Union Rail
SCYZ	Sea Containers Incorporated
SCZU	Yorkshire Marine Containers (BNSF)
SDCX	Consolidated Minerals Incorporated, Feed Supplement Div.
SDEX	Savage-Harrington Energy
SDIY	San Diego and Imperial Valley Railroad 
SDPX	South Dakota Soybean Processors
SDRX	Central Puget Sound Regional Transit Authority
SDSU	Soo Line Railroad
SE	Semo Port Railroad Incorporated
SEAU	Sea-Land Service, Incorporated
SECX	General Electric Rail Services Corporation
SEFX	North American Rails Leasing Corporation
SEI	Southeastern International Corporation
SEIU	Strategic Equipment Systems, Incorporated
SEIX	Seimax Gas Corporation
SEIZ	Strategic Equipment Systems, Incorporated
SEKR	Southeast Kansas Railroad 
SEMX	Seminole Electric Cooperative, Incorporated
SEPA	Southeastern Pennsylvania Transportation Authority
SEPX	Southwestern Electric Power Company
SEQX	Sequa Chemicals Incorporated
SERA	Sierra Railroad 
SERX	ACF Industries Incorporated
SESX	B.C. Hydro
SFAL	SF and L Railway, Incorporated
SFIX	HELM Financial Corporation
SFLC	Burlington Northern Santa Fe Railway 
SFLR	SF and L Railway Incorporated
SFQ	Burlington Northern Santa Fe Railway 
SFR	Southern Freight Logistics, LLC (d/b/a Southern Freight Railroad)
SFRX	Philip Metals, Incorporated
SFS	Santa Fe Southern Railway, Incorporated
SFSX	San Francisco Transportation Services Company, Incorporated
SFTU	Burlington Northern and Santa Fe Railway 
SFTX	Continental Tank Car Corporation
SFTZ	Burlington Northern and Santa Fe Railway 
SFVZ	Burlington Northern and Santa Fe Railway 
SGAU	Saga and Company, Limited
SGAX	SGA Leasing Company
SGCX	Sungas Corporation of Florida
SGIX	Vision Energy Minnesota, Incorporated
SGLR	Seminole Gulf Railway L.P.
SGRX	Skip Gibbs
SGSX	Terra International Incorporated
SGTU	Sogotra Ltd
SGVY	Saginaw Valley Railway 
SH	Steelton and Highspire Railroad 
SHAX	Sherwin Alumina Company
SHLX	Procor Limited
SHPX	ACF Industries Incorporated
SHRX	Smoky Hill Railway and Historical Society, Incorporated
SHSZ	H and S Railroad 
SHWU	Showa Maritime USA, Incorporated
SHWZ	Showa Line, Limited
SI	Union Pacific Railroad 
SICX	Sloss Industries Corporation
SIEX	Southeastern Industrial Enterprises Incorporated
SIGX	Southern Indiana Gas and Electric
SILU	Suttons International
SIND	Southern Indiana Railway, Incorporated
SIPX	Arrendadora Sipco, S.A. de C.V.
SIRR	Southern Industrial Railroad, Incorporated
SIRX	Southern Illinois Railcar Company
SISU	Scandinavian Cargo Sea A.B.
SITX	Sherritt International Corporation
SJEX	SJEX, Incorporated
SJNX	Mobay Corporation
SJRT	St. Johns River Terminal
SJRX	Jacksonville Electric Authority
SJSZ	Specialty Chassis Leasing, Incorporated
SJVR	San Joaquin Valley Railroad 
SKCX	ARCO Chemical Company
SKGX	Sibley Railcar and Parts Incorporated
SKIU	XTRA Intermodal
SKIZ	XTRA Intermodal
SKNX	Saskatchewan Grain Car Corporation
SKOL	South Kansas and Oklahoma Railroad
SKPR	Southern Kent and Pacific Railroad
SKPX	Saskatchewan Grain Car Corporation
SKRX	Schuylkill Railcar L.P.
SKRZ	XTRA Intermodal
SL	Salt Lake City Southern Railroad
SLAL	South Plains Lamesa Railroad
SLBU	Showa Line, Limited
SLC	San Luis Central Railroad 
SLCU	SLC Societe Location Containers
SLDU	Showa Line, Limited
SLEX	Short Line Enterprises, Limited
SLFU	Showa Line, Limited
SLGG	Progress Rail Services Corporation d/b/a Sidney and Lowe Railroad
SLGW	Salt Lake, Garfield and Western Railway 
SLHU	Showa Line, Limited
SLIU	Star Lines Equipment, Incorporated
SLIZ	Star Lines Shipping Company, Inc
SLKU	Sea-Link Container Lines
SLOU	Showa Line, Limited
SLQ	St. Lawrence and Atlantic Railroad (Quebec) Incorporated
SLR	St. Lawrence and Atlantic Railroad 
SLRS	SMS Rail Service, Incorporated
SLRU	Showa Line, Limited
SLSF	Burlington Northern Santa Fe Railway 
SLVX	Silver Enterprises
SLWC	Stillwater Central Railroad 
SM	St. Marys Railroad 
SMA	San Manuel Arizona Railroad 
SMCX	San Miguel Electric Cooperative
SMCZ	Maine Central Railroad 
SMDU	Minnesota Mining and Manufacturing (d/b/a 3M)
SMEX	South Mississippi Electric Power Association
SMIX	Structural Metals, Incorporated
SMLU	Seaboard Marine Limited
SMLZ	Seaboard Marine Limited
SMMX	St. Marys Cement Company
SMNR	Southern Manitoba Railway Incorporated
SMNX	Solvay Minerals, Incorporated
SMPX	Commercial Metals Company
SMRR	Sisseton Milbank Railroad Incorporated
SMRX	Atlanta Chapter - National Railway Historical Society, Incorporated
SMV	Santa Maria Valley Railroad 
SNBL	Sioux City and New Orleans Barge Line
SNFX	IND/AG Chemicals, Incorporated
SNHX	IND/AG Chemicals, Incorporated
SNLU	Schneider National
SNLZ	Schneider National
SNR	Sunflour Railroad, Incorporated
SNWU	Ste National Der Wagon Reservior
SOCX	BP Amoco Chemical Company BP Oil Div.
SOEX	Shell Oil Company
SOFU	Sofredi
SOIX	Sand Seed Service, Incorporated
SOLX	Solite Corporation
SOM	Somerset Railroad Corporation
SONX	Soneco Services, Incorporated
SOO	Soo Line Railroad
SOOZ	Soo Line Railroad
SOPR	South Pierce Railroad
SORA	Southern Rails Cooperative Limited
SOTX	Southern Concrete Construction Company, Incorporated
SOU	Norfolk Southern Railway 
SOU	Norfolk Southern Railway 
SOUU	Norfolk Southern Railway 
SP	Union Pacific Railroad 
SPAX	Southeastern Pennsylvania Transportation Authority
SPAZ	Spanish Lines
SPCH	Quest Communications Corporation
SPCU	Spacific Container Lease Pty Ltd
SPCX	Quest Communications Corporation
SPDU	Union Pacific Railroad 
SPDZ	Union Pacific Railroad 
SPFE	Union Pacific Railroad 
SPFZ	Union Pacific Railroad 
SPGX	Suburban Propane LP
SPIX	Sweeteners Plus Incorporated
SPLU	Compania Trasatlantica Espanola (Spanish Line)
SPLZ	Union Pacific Railroad 
SPPU	Splosna Plovba Piran
SPQ	Union Pacific Railroad 
SPRX	Seaport Central Railroad, Incorporated
SPS	Burlington Northern Santa Fe Railway 
SPSX	Progress Rail Services Corporation
SPTX	Trinity Rail Management Incorporated
SPTZ	Union Pacific Railroad 
SPUD	St. Paul Union Depot Company
SQVR	Sequatchie Valley Railroad
SR	Kansas City Southern Railway 
SRAX	Southern Rail Associates, Incorporated
SRC	Strasburg Railroad 
SRCX	Sid Richardson Carbon Company
SREX	StatesRail Equipment Company, LLC
SRIX	Southwest Rail Industries, Incorporated
SRLX	Southern Rail Leasing Incorporated
SRN	Sabine River and Northern Railroad 
SRNJ	Southern Railroad of New Jersey
SRP	Safe Handling Rail, Incorporated
SRPX	Salt River Project, Agricultural Improvement and Power District
SRRX	Star Railroad Equipment
SRSU	Sea-Road Shipping S.A., Miami FL
SRSX	Sperry Rail Service
SRTX	Southwind Rail Travel Limited
SRY	Southern Railway of British Columbia, Limited
SRYC	Sierra Railway of California
SS	Sand Springs Railway 
SSAM	Sault Ste. Marie Bridge Company
SSC	Southern Switching Company
SSCU	States Steamship Company
SSCZ	States Steamship Company
SSD	Union Pacific Railroad 
SSDK	Savannah State Docks Railroad 
SSH	South Shore
SSIU	Japan Line, Limited
SSIX	General Electric Rail Services Corporation
SSIZ	Japan Line, Limited
SSJR	Sheffield Station Junction Railway
SSJU	Sumitomo 3M
SSLV	Southern San Luis Valley Railroad
SSLZ	Sea Star Line, LLC
SSMX	Joseph Transportation Incorporated
SSOR	Sisseton Southern Railway 
SSPB	Seaspan International Limited
SSPX	A. E. Staley Manufacturing Company
SSSU	Hansen and Tidemann,Incorporated
SSSX	Transportation Logistics Corporation
SSSZ	Hansen and Tidemann,Incorporated
SSVX	SSI Industries (M of Way Cars)
SSW	Union Pacific Railroad 
SSWN	Union Pacific Railroad 
ST	ST Rail System
STAU	Star Shipping A Norway
STAX	OCI Chemical Corporation
STCX	Sterling China Company(Captive Service)
STE	Stockton Terminal and Eastern Railroad
STEX	Sterling Chemicals, Incorporated
STGX	South Texas Grain Company, Incorporated
STJX	Stone Container (Canada) Incorporated
STLH	St. Lawrence and Hudson Railway (now part of CP)
STLU	Matson Navigation Company
STLX	A. E. Staley Manufacturing Company
STLZ	Matson Navigation Company
STMA	St. Maries River Railroad 
STMX	A. E. Staley Manufacturing Company, Industrial Products Group
STMZ	Texas Mexican Railway 
STOX	ACF Industries Incorporated
STPX	Strategic Transport Systems Incorporated
STR	Shawnee Terminal Railway 
STRT	Stewartstown Railroad 
STRX	Trinity Industries Leasing Company
STRZ	Stroh/Schlitz Brewery
STSX	A. E. Staley Manufacturing Company
STTU	Shirlstar Container Transport Limited
STTX	TTX Company
STTZ	Stevens Transport
SUAB	Southern Alabama Railroad 
SUDU	Columbus Line, Incorporated
SULX	Sultran Limited
SUN	Sunset Railway 
SUNX	Sun Refining and Marketing Company
SUTU	Suttons International
SUTX	Sumter Transport Company, Incorporated
SV	Greater Shenandoah Valley Development Dev. Company, d/b/a Shenandoah Valley Railroad
SVRR	Shamokin Valley Railroad 
SW	Southwestern Railroad 
SWFX	Stone Container Corporation
SWFZ	Swift Transportation
SWGR	Seagraves, Whiteface and Lubbock Railroad
SWKR	San Pedro and Southwestern Railway 
SWP	Southwest Pennsylvania Railroad 
SWPX	Southwestern Portland Cement Company
SWRX	Transportation Equipment Incorporated
SWTZ	St. Louis Southwestern Railway 
SWYX	OCI Chemical Wyoming Company
SXSX	Ron Johnson and Associates
SYRR	Sandusky River Railroad
SYRX	Minnesota Corn Processors, Bulk Products Div.
SYSX	Winter Bird Corporation
TACX	American Coal Sales Company
TAEX	The Andersons
TAG	Norfolk Southern Railway 
TAGX	Texoma AG Products, Incorporated
TAIX	Texas Alkyls Incorporated
TALX	Trical Incorporated
TALZ	Transamerica Leasing, Incorporated
TANX	TransiTech, Incorporated
TANZ	Intermodal Express, Incorporated
TARX	Sandersville Leasing, Incorporated
TASD	Terminal Railway Alabama State Docks
TASX	TransRail, Incorporated
TATX	General Electric Rail Services Corporation
TAXU	TRAC Lease Incorporated
TAXZ	TRAC Lease Incorporated
TAZX	Trade Wind, Limited
TBCU	Boeing Company
TBCX	Boeing Company
TBER	Terre Haute, Brazil and Eastern Railroad
TBRX	Taylor Rail Group Incorporated
TBRY	Thermal Belt Railway
TCAX	General Electric Rail Services Corporation
TCB	Texas Central Business Lines Corporation
TCCX	TCCX Corporation
TCDX	Union Tank Car Company
TCG	Tucson, Cornelia and Gila Bend Railroad 
TCGX	Williams Energy Ventures Incorporated
TCGZ	Columbus and Greenville Railway
TCIX	Trinity Chemical Leasing, L.L.C.
TCKR	Turtle Creek Industrial Railroad
TCLU	TCL Tankcargo Container Leasing S.A.
TCLX	Trinity Chemical Leasing, L.L.C.
TCMX	CIT Group/Capital Finance Incorporated
TCOX	The Concrete Company
TCOZ	Terminal Consolidation Company
TCPX	Transport Capital Rail Partners, LLC
TCPZ	Transamerica Leasing, Incorporated
TCQX	Thrall Car Manufacturing Company
TCRY	Tri-City Railroad 
TCSZ	Triple Crown Services Company
TCT	Texas City Terminal Railway 
TCTX	Tube City Incorporated
TCWR	Twin Cities and Western Railroad
TCX	General American Marks Company
TCZU	Triple Crown Services Company
TDNZ	Transamerica Leasing, Incorporated (BNSF)
TDPZ	Transport International Pool, Incorporated
TDSZ	Transamerica Distribution Services, Incorporated
TE	Tacoma Eastern Railway 
TEAX	Transportation Equipment, Incorporated
TEGX	Transenergy Grinding Incorporated
TEHU	Trans Ocean Container Corporation
TEIX	Transportation Equipment, Incorporated
TELX	ELF Atochem North America, Incorporated
TEMX	Temple-Inland Forest Products
TENN	Tennessee Railway 
TERZ	Tacoma Eastern Railway 
TEUU	Gulfcoast Transit Company
TEXC	Texas Central Railroad 
TEXU	Textainer Incorporated
TFLU	Trans Freight Lines, Incorporated
TFM	TFM, S.A. de C.V.
TFTX	Tifton Terminal Railway Museum, Incorporated
TFVM	Terminal Ferroviaria Del Velle De Mexico, S.A. de C.V.
TFZ	Terminal Freight Handling Company
TGAX	PCS Phosphate Company, Incorporated
TGCU	TCS Transglobe Container Services GMBH
TGCX	PolyOne Company
TGIX	PCS Phosphate Company, Incorporated
TGOX	First Union Rail
TGPU	Transamerica Leasing, Incorporated
TGPX	Tamak Transportation Corporation
TGRX	Transglobal Rail Incorporated
TGSX	FMC Corporation
THB	Canadian Pacific Railway
THCX	MG Industries
THRX	Transportation Corporation of America
TI	Turners Island, LLC
TIBR	TimberRock Railroad 
TILU	Tirrenia Di Navigazione S.P.A.
TILX	Trinity Industries Leasing Company
TIMX	Trinity Industries Leasing Company
TINU	Tioxide (U.K.) Limited
TINX	Trinity Industries Leasing Company
TIPZ	TIP Intermodal Services
TIRL	Tonawanda Island Railroad Incorporated
TIRZ	Union Pacific Railroad 
TISH	Tishomingo Railroad 
TISX	Trinity Industries Leasing Company
TJRX	S. M. Brooks
TKCU	ABS Pacific
TKCX	Thiele Kaolin Company
TKEN	Tennken Railroad 
TLAU	Trail-Con Leasing Incorporated (Canadian Pacific Limited)
TLAZ	Trail-Con Leasing Incorporated
TLCX	General Electric Rail Services Corporation
TLDX	General Electric Rail Services Corporation
TLIU	Trans Leasing, Incorporated
TLLX	Trinity Industries Leasing Company
TLTX	Tilcon Tomasso Quarries, Incorporated
TM	Texas Mexican Railway 
TMAX	Tenneco Packaging Company
TMBL	Tacoma Municipal Belt Line Railway
TMEX	Trinity Industries Leasing Company
TMEZ	Transamerica Leasing, Incorporated (BNSF)
TMGX	Transporte Multimodal de Granos
TMIX	TransMatrix, Incorporated
TMKZ	Transport International Pool, Incorporated
TMLU	Taylor Minster Leasing Limited
TMLX	Temco Corporation
TMLZ	Seaboard Marine Limited
TMMU	Transportacion Maritima Mexicana, S.A.
TMMX	TMM Logistics, S.A. de C.V.
TMMZ	TMM Logistics, S. A. de C. V.
TMPX	Texas Municipal Power Agency
TMPZ	TIP Intermodal Services
TMSS	Towanda-Monroeton Shippers Lifeline, Incorporated
TMT	Trailer Marine Transport Corporation
TMTU	P and O Tank Masters
TMTZ	Trailer Marine Transport Corporation
TN	Texas and Northern Railway 
TNAX	TransAmerican Refining Corporation
TNCX	General Electric Rail Services Corporation
TNER	Texas Northeastern Division, Mid-Michigan Railroad Incorporated
TNHR	Three Notch Railroad, Incorporated
TNM	Union Pacific Railroad 
TNMR	Texas and New Mexico Division, Austin and Northwestern Railroad 
TNR	Kansas City Southern Railway 
TNXU	Transx Limited
TNXZ	Transx Limited
TOE	Texas, Oklahoma and Eastern Railroad
TOFU	TOFC Incorporated, Division of Fruehauf
TOFZ	TOFC Incorporated, Division of Fruehauf
TOLU	Trans Ocean Leasing
TOLZ	Trans Ocean Leasing
TONU	Trans Ocean Line, Limited
TOR	RailLink Canada Limited (RailAmerica)
TORU	Torm Lines
TORZ	Torco Inc
TOTU	Tiphook Container
TOTX	Cotco, Incorporated
TP	Union Pacific Railroad 
TPCZ	Tiphook Container Rental Company, Limited
TPEX	General Electric Railcar Services Corporation
TPFX	General Electric Rail Services Corporation
TPGX	Technical Propellants, Incorporated
TPHU	Tiphook Container Rental Company, Limited
TPHX	Thomas Payne Holdings Incorporated
TPIU	Tropicana Products Incorporated
TPIX	Tropicana Products Sales, Incorporated
TPKU	Toledo, Peoria and Western Railway Corporation
TPKU	Trafpak, Limited Aylesbury, G.B.
TPLX	Trans-Pacific Lines
TPSX	TPS Leasing Company, L.L.C.
TPTX	Trailer Train Company
TPW	Toledo, Peoria and Western Railway
TPXU	Tiphook Container Rental Company, Limited
TPZ	Union Pacific Railroad 
TQEX	First Union Rail
TR	Tomahawk Railway, L.P.
TRAU	Associated Transport Line
TRAX	Railtex, Incorporated
TRC	Trona Railway 
TRCX	Tri-County Commuter Rail Authority
TRDU	Triad Transport Incorporated
TREX	Tetra Technologies, Incorporated
TRFU	Trans Freight, Incorporated
TRFZ	Transcontinental Refrigerator Lines, Incorporated
TRGX	First Union Rail
TRIN	Trinidad Railway, Incorporated
TRIU	Triton Container International Incorporated
TRIX	GATX Financial Corporation
TRLU	Transamerica Leasing Incorporated
TRLX	Texas Railcar Leasing Company
TRMW	City of Tacoma, d/b/a Tacoma Rail Mountain Division
TRMX	The Railroad Museum-TRM Industries
TRNX	General Electric Rail Services Corporation
TROU	Trans Ocean Limited
TRPX	AmeriGas Propane L.P.
TRRA	Terminal Railroad Association of St. Louis
TRSU	Transconex, Incorporated
TRTX	W.J.Kirberger, Trustee
TRUX	Midwest Bottle Gas Company
TRZU	Transamerican Container Leasing Company
TRZZ	Transamerican Leasing, Incorporated
TSBY	Tuscola and Saginaw Bay Railway 
TSE	Texas South-Eastern Railroad 
TSFU	Transamerica Leasing Incorporated (BNSF)
TSKU	N.Y.K. Line
TSLZ	Transportation Specialists, Limited
TSNR	Tyson Railroad, Incorporated
TSOZ	Tank Solutions, Incorporated
TSPZ	Transamerica Leasing Incorporated (BNSF)
TSRD	Twin State Railroad 
TSRR	Tennessee Southern Railroad 
TSSX	U.S. Dept. of Energy, Albuquerque Operations Office
TSSZ	Transamerica Leasing Incorporated
TSU	Tulsa-Sapulpa Union Railway 
TSU	Tulsa-Sapulpa Union Railway 
TSVX	Tennsv, Incorporated
TSWR	Toppenish, Simcoe and Western Railroad
TSXX	Tri-State Generation and Transmission Assoc.
TSXZ	Transamerica Leasing Incorporated
TTAX	TTX Company
TTBX	TTX Company
TTCU	TNC Chemicals Company
TTCX	TTX Company
TTDX	TTX Company
TTEX	TTX Company
TTFX	TTX Company
TTGX	TTX Company
TTHX	TTX Company
TTIS	Transkentucky Transportation Railroad, Incorporated
TTIU	Thailand Tantalum Industry Corporation Limited
TTIZ	Tandem Transport Incorporated
TTJX	TTX Company
TTKX	TTX Company
TTLC	Tropical Trailer Leasing Corporation
TTLX	TTX Company
TTLZ	Tropical Trailer Leasing Corporation
TTMX	TTX Company
TTNX	TTX Company
TTOX	TTX Company
TTOZ	Totem Ocean Trailer Express, Incorporated
TTPX	TTX Company
TTPZ	Canadian National Railway
TTQX	TTX Company
TTR	Talleyrand Terminal Railroad 
TTRU	Tropical Shipping and Construction Company, Limited
TTRX	TTX Company
TTRZ	Train Trailer Rentals Limited
TTSX	TTX Company
TTSZ	Triton Transport Services
TTTU	Transport International Containers S.A.
TTTX	TTX Company
TTTZ	Puerto Rican Maritime Authority
TTUX	TTX Company
TTVX	TTX Company
TTWU	Canadian National Railway
TTWX	TTX Company
TTWZ	Canadian National Railway
TTX	TTX Company
TTZX	TTX Company
TUGX	TXU Mining Company
TUPX	Texas Ultra Pure Incorporated
TUST	Texarkana Union Station Trust
TVAX	Tennessee Valley Authority
TVM	Ferrocarriles Nacionales de Mexico
TVRR	Tulare Valley Railroad 
TWLZ	Trans West Logistics
TWNZ	Twinstar Leasing Limited
TWSX	A.E. Staley Manufacturing Company
TXGN	Texas, Gonzales and Northern Railway 
TXIX	Texas Industries, Incorporated
TXNW	Texas North Western Railway 
TXOR	Texas and Oklahoma Railroad 
TXPF	Texas Pacifico Transportation, Limited
TXPX	Texas Petrochemicals Corporation
TXR	Texas Rock Crusher Railway 
TXTC	Texas Transportation Company
TXUX	TXU Electric
TXXZ	Trac Lease Incorporated
TYBR	Tyburn Railroad 
TYC	Tylerdale Connecting
TYPX	Tyco Plastics
UACU	United Arab Shippers
UAEU	United Arab Shipping Company(S.A.G.)
UAIX	United Asphalts, Incorporated
UASU	United Arab Shipping Company
UASZ	United Arab Shipping Company
UBCU	United Fruit Company
UBMU	United Baltic Corporation Limited
UCAU	UCA Containers AG
UCCU	American Cyanamide
UCCX	Union Carbide Canada Limited
UCEX	Union Electric Company
UCFX	Union Carbide Corporation, a subsidiary of The Dow Chemical Company
UCIR	Union County Industrial Railroad
UCLU	Unicorn Lines (Pty) Limited
UCLX	Vulcan Materials Co, ChemicalsDiv
UCMX	United Clays, Incorporated
UCOX	Praxair, Incorporated
UCRY	Utah Central Railroad 
UCSX	Union Camp Corporation
UELX	ADM Transportation Company
UFCU	Flexi-Van Leasing, Incorporated
UFCZ	Flexi-Van Leasing, Incorporated
UFIX	Reliant Energy HLandP
UGMU	Evergreen International (USA) Corporation
UHRX	Upper Hudson River Railroad Corporation
UMP	Upper Merion and Plymouth Railroad
UMPX	First Union Rail
UMSZ	Maersk Equipment Services
UNBX	General Electric Rail Services Corporation
UNCX	CGTX Incorporated
UNPX	Procor Limited
UNSX	MidAmerican Energy Company
UNTX	MRC Rail Services, LLC
UOCX	General American Marks Company
UOPX	UOP A New York Partnership
UP	Union Pacific Railroad 
UPAX	Great River Energy
UPBZ	Union Pacific Railroad 
UPCU	USPCI, Incorporated
UPCX	Laidlaw Environmental Services Incorporated
UPFE	Union Pacific Railroad 
UPFU	Union Pacific Bulktainer Service
UPHZ	Union Pacific Railroad 
UPNZ	Union Pacific Railroad 
UPOZ	United Parcel Service
UPP	Union Pacific Railroad  (Passenger cars)
UPR	Union Pacific Railroad 
UPRU	Union Pacific Railroad 
UPSZ	United Parcel Service
UPTU	Union Pacific Bulktainer Service
UPUU	Union Pacific Bulktainer Service
UPWZ	United Parcel Service
UPY	Union Pacific Railroad 
UPZ	Union Pacific Railroad 
URDX	Arch of Kentucky, Incorporated
URGX	UniCapital Rail Group
URR	Union Railroad  (Pittsburgh PA.)
URY	Union Ry. of Memphis
USAU	Pan Texas Leasing Incorporated
USAX	U.S. Dept. of Defense, Troop Support and Aviation Material Readiness Command (Intraplant)
USAZ	XTRA Intermodal
USBX	CIT Group/Capital Finance, Incorporated
USCU	Union Steam Ship Company of NZ Limited
USCX	William G. Simon
USEX	General Electric Rail Services Corporation
USFU	U.S. Department of Defense Air Force
USIX	Equistar Chemicals LP
USLU	United States Lines, Incorporated
USLX	General Electric Rail Services Corporation
USLZ	United States Lines, Incorporated
USMU	U.S. Department of Defense Marine Corps
USMX	U.S. Steel Mining Company, Incorporated
USNU	U.S. Department of Defense Navy
USNX	U.S. Dept. of Defense, Military Traffic Management Command (Intra Plant Service)
USPX	U.S. Plastics Corporation
USPZ	U.S. Postal Service
USSU	United Steel and Strip Corporation
USWX	USA Waste Services Incorporated
UTAH	Utah Railway 
UTCU	Stolt Tank Containers Incorporated
UTCX	Union Tank Car Company
UTHZ	Transamerica Leasing Inc
UTLX	Union Tank Car Company
UTLZ	United Trailer Leasing Company
UTPX	Suburban Propane LP
UTTX	TTX Company
UUAX	Up-Up and Away, Incorporated
UUUZ	Uiterwyk Corporation
UYLU	United Yugoslav Lines (Kerr Steamship Company Agents)
UYLZ	United Yugoslav Lines
VAIU	Transports International Vaicon
VALE	Valley Railroad 
VALX	Sierra Pacific Power Company/Idaho Power Company
VAPX	Virginia Power
VB	Van Buren Bridge Company
VCRR	Ventura County Railroad 
VCRX	Vaughn Leasing and Rental Corporation
VCSX	PLM International Incorporated
VCY	Ventura County Railway 
VEPX	HELM Equipment Leasing Company
VERX	Verson Division of Allied Products Corporation
VESU	Vespucci Marine Company, Limited
VGN	Norfolk Southern Railway 
VGPX	Valley Grain Products Incorporated
VIA	VIA Rail Canada
VIAX	VIAX Incorporated
VICX	Union Tank Car Company
VIIX	Vinings Industries, Incorporated
VIKU	Viking Freight Systems Incorporated
VIKZ	Viking Freight Systems Incorporated
VILX	LaRoche Industries
VIPX	Union Tank Car Company
VMCX	Commonwealth Plan, Incorporated
VMEX	Vernor Materials Equipment Company
VMVX	VMV Enterprises, Incorporated
VOSU	Bureau Veritas
VOTX	Volunteer Trailblazers, Incorporated
VPCX	Virginia-Pacific Corporation
VR	Valdosta Railway, L.P.
VREX	Virginia Railway Express
VRR	Vaughan Railroad 
VRRC	Vandalia Railroad 
VS	V  andS Railway, Incorporated
VSRR	Virginia Southern Div.,North Carolina and Virginia Railroad
VTGU	VTG Vereinigte Tanklager U Transportmittel
VTR	Vermont Railway, Incorporated
VTRZ	Vermont Railway, Incorporated
VTTX	TTX Company
VUHX	Wagner Mills Incorporated
VULX	Vulcan Materials Company, Construction Materials Group
VWCX	Railcar Leasing Specialists, Incorporated
VYMX	Voith Hydro Incorporated
WA	CSX Transportation, Incorporated
WAB	Norfolk Southern Railway 
WABZ	WTL Rail Corporation
WACR	Washington County Railroad Corporation
WACX	Albright and Wilson Company
WAER	Wabash and Erie Railroad
WAFX	Western Ash Company
WAGX	PCS Phosphate Company, Incorporated
WAJU	Elder Dempster Lines Nigerian National Line
WAKX	Wake Partnership
WAMX	Webb Asset Management
WAND	Wisconsin and Michigan Railway 
WAR	Warrenton Railroad 
WATC	Washington Terminal Company
WATR	Water Carriers
WATZ	Western Auto
WBCR	Wabash Central Railroad Corporation
WBCX	Blue Circle, Incorporated
WBMX	Lauhoff Grain Company
WBTS	Waco, Beaumont, Trinity and Sabine Railway 
WC	Wisconsin Central Limited
WCAX	Westcan Rail Limited
WCCL	Wisconsin Chicago Link Limited
WCCX	Consolidation Coal Company
WCDX	Farmland Industries, Incorporated
WCFX	General Electric Rail Services
WCHX	Walter Haffner Company
WCLC	Waccamaw Coast Line Railroad 
WCLR	Waccamaw Coast Line Railroad 
WCLU	Orient Overseas Line Incorporated
WCLZ	Wisconsin Central Limited
WCOR	Wellsboro and Corning Railroad 
WCQ	Wisconsin Central Limited
WCRC	Columbia Basin Railroad 
WCRL	West Chester Railroad 
WCSX	Savage-Tolk Energy Services
WCTR	WCTU Railway 
WCTU	WCTU Railway 
WCTX	Resource Recycling Incorporated
WDAX	Washington Department of Agriculture
WE	Wheeling and Lake Erie Railway 
WECX	Westinghouse Electric Corporation
WEIX	Wilbur-Ellis Company
WELX	White Equipment Leasing Corporation
WEPX	Wisconsin Electric Power Company
WERX	Western Railroads, Incorporated
WERZ	Werner Enterprises, Incorporated
WESX	Westar Timber Limited
WETZ	West East Transport Company
WEYU	Weyerhauser Company
WFAX	Western Fuels Association, Incorporated
WFCX	Western Farmers Electric Cooperative
WFIX	First Union Rail
WFS	West Isle Line, Incorporated
WGCR	Wiregrass Central Railroad., Incorporated
WGFX	Willard Grain and Feed Incorporated
WGR	Willamina and Grand Ronde Railway
WHCU	U.S. .Department of Energy.
WHMX	Miner Enterprises
WHOE	Walking Horse and Eastern Railroad
WHRC	Windsor and Hantsport Railway 
WHTX	ADM Milling Company
WHTZ	Riley Whittle, Incorporated (RWI Transportation)
WIF	West India Fruit and Steamship
WIIX	Williamette Industries Incorporated
WIKU	Textainer Incorporated
WIMX	Pennsylvania Lime Company
WISX	Alliant Energy
WITX	General Electric Rail Services Corporation
WJ	West Michigan Railroad 
WKLR	Western Kentucky Railway L.L.C.
WLDX	Weldship Corporation
WLO	Waterloo Railway 
WLPX	Westlake Polymers Corporation
WM	CSX Transportation, Incorporated
WMI	West Michigan Railroad Co
WMIX	Waste Management of Illinois, Incorporated
WMSC	White Mountain Scenic Railroad
WNCX	Wabash National Finance Corporation
WNCZ	Wabash National Finance Corporation
WNFR	Kanawha Rail Corporation
WNGX	Western Natural Gas Company
WNYP	Western New York and Pennysylvania Railroad LLC
WNYX	Western New York Railway Historical Society
WOHO	Wabash and Ohio Railroad
WOLZ	H. O. Wolding, Incorporated
WP	Union Pacific Railroad 
WPEX	Wabash Power Equipment Company
WPGX	Western Paving Construction Company
WPMU	Union Pacific Railroad 
WPMW	Union Pacific Railroad 
WPRR	Willamette and Pacific Railroad
WPRU	Waterman of Puerto Rico-USA Incorporated
WPSX	Wisconsin Public Service Corporation
WPTZ	Union Pacific Railroad 
WPXZ	Union Pacific Railroad 
WPY	White Pass and Yukon Corporation, Limited
WPZ	Union Pacific Railroad 
WRDX	MidAmerican Energy Company
WREX	Western Railroad Equipment Company
WRFX	White River Trading Incorporated
WRLX	Relco Tank Line Incorporated
WRNX	Chevron U.S.A. Incorporated
WRPI	Western Railroad Properties, Incorporated
WRPX	PSI Energy, Incorporated
WRRC	Western Railroad 
WRSX	Warren Railcar Service, Incorporated
WRWK	Providence and Worcester Railroad
WRWX	Trinity Rail Management Incorporated
WRX	Western Refrigerator Line Company Terminal
WRY	Waterloo Railway 
WS	Walkersville Southern Railroad
WSIX	Watco Switching Indiana
WSLZ	Wiley Sanders Truck Lines, Incorporated
WSOR	Wisconsin and Southern Railroad 
WSOX	First Union Rail
WSOZ	Wisconsin and Southern Railroad 
WSPX	Wheelstar Corporation
WSR	Warren and Saline River Railroad
WSRY	Winamac Southern Railway 
WSRZ	Wisconsin and Southern Railroad 
WSS	Winston-Salem Southbound Railway 
WSSX	Wedron Silica Company
WSTX	Whitestone Supply Company
WSTZ	Westside Transport, Incorporated
WSX	Wierton Steel Division, National Steel Corporation
WTCO	Western Transportation Company
WTCX	Weyerhauser Company
WTJR	Wichita, Tillman and Jackson Railway 
WTL	West Texas and Lubbock Railroad 
WTLR	West Texas and Lubbock Railroad 
WTLZ	WTL Rail Corporation
WTNN	West Tennessee Railroad Corporation
WTRM	Warren and Trumbull Railroad 
WTRY	Wilmington Terminal Railroad
WTSE	West Shore Railroad 
WTTX	TTX Company
WUT	Wichita Union Terminal Railway
WVC	Durbin and Greenbrier Valley Railroad, d/b/a West Virginia Central
WVCX	Westvaco Corporation
WVIU	West Van Incorporated
WVIZ	West Van Incorporated
WVN	Kingswood Northern Incorporated d/b/a West Virginia Northern Railroad
WVR	Willamette Valley Railway 
WW	Winchester and Western Railroad 
WWBX	WWIB Transportation Services
WWEX	Railworks Wood Waste Energy, Incorporated
WWLU	Wihl Wilhelmsen
WWLX	LaRoche Industries Incorporated
WWRC	Wilmington and Western Railroad
WWUX	Unimin Corporation
WYCO	Wyoming and Colorado Railroad
WYCX	Weyerhauser Canada Limited
WYEC	Wye Transportation Company
WYS	Wyandotte Southern Railroad 
XCCX	Xavier Chemical Corporation
XCLU	Textainer Special Equip. Limited
XCTU	XTRA Intermodal (BNSF)
XCTZ	XTRA Intermodal
XCWZ	Union Pacific Railway 
XFEZ	Florida East Coast Railway
XKTZ	XTRA Incorporated
XMCZ	Maine Central Railroad
XMTZ	XTRA Intermodal
XNWZ	Norfolk Southern Railway 
XOMX	Exxon Mobil Corporation
XPMZ	Puerto Rican Maritime Shipping Authority
XPWX	Expressway
XRFZ	CSX Transportation, Incorporated
XSCZ	CSX Transportation, Incorporated
XSLZ	Soo Line Railroad
XTCU	Van Donge En De Roo
XTMZ	Trailer Marine Transport Company
XTRU	Genstar Container Corporation
XTRX	First Union Rail
XTRZ	XTRA Intermodal
XTTX	TTX Company
YARR	Youngstown and Austintown Railroad, Incorporated
YB	Youngstown Belt Railroad 
YCEU	Inter-Continental Equipment, Incorporated
YFIZ	Yellow Forwarding Company
YFSZ	Yellow Freight Services, Incorporated
YKR	York Railway 
YMCZ	Yangming Marine Transport Corporation
YMLU	Yangming Marine Transport Corporation
YMLZ	Yangming Marine Transport Corporation
YRC	York Railway 
YRPL	Yelm Roy Prairie Line
YS	Youngstown and Southern Railway 
YSAZ	Nippon Liner System Limited
YSDU	Yamashita-Shinnihon Line
YSJU	Yamashita-Shinnihon Line
YSLR	Yolo Shortline Railroad 
YSLU	Yamashita-Shinnihon Line
YSLZ	Yamashita-Shinnihon Line
YSTU	Yamashita-Shinnihon Line
YVRR	Yadkin Valley Railroad 
YVT	Yakim Valley Transportation Company
YW	Yreka Western Railroad 
ZACX	Zaclon Incorporated
ZBXU	Zim Israel Navigation Company, Limited
ZCAX	Zinc Corporation of America
ZCCX	Zeigler Coal Company
ZCSU	Zim American Israeli Shipping Company, Incorporated
ZDAZ	XTRA Intermodal
ZIMU	Zim Israel Navigation Company, Limited
ZKCC	XTRA Intermodal
ZMFC	XTRA Intermodal
ZRNX	Erie City Energy Division - Zurn Industries Incorporated
ZSPZ	Transamerica Leasing, Incorporated
ZTEU	Aztec Leasing Corporation
ZTLX	Ziol Tank Line
ZTTX	TTX Company