A AA - Ann Arbor Railroad AAAX - AAA Warehouse Corporation; Shell Oil Products US AACX - Alaska Division of Agriculture AADX - Airco Alloys and Carbide AAEX - American Aniline and Extract Company AAKX - Amulco Asphalt Company AALX - Advanced Aromatics AAMX - Shippers' Car Line Division of ACF Industries; Arrendadora de Carros de Ferrocarril del Atlantico; Arrendadora de Carros de Ferrocarril AAR - Association of American Railroads AATX - Ampacet Corporation AAX - American Agricultural Chemical Company; Agrico Chemical Company AB - Akron Barberton Cluster Railway ABB - Akron and Barberton Belt Railroad ABBX - Abbott Labs ABC - Atlanta, Birmingham and Coast Railroad ABCK - Alaska British Columbia Transportation Company ABCX - American Bitumuls Company; Merchants Despatch Transportation Corporation; Falcon Coal Company; Tennessee Valley Authority ABEX - Abbey Chemical Corporation; CPS Processing Corporation; CPS Chemical Company; Abbey Chemical Corporation ABGX - American Black Granite Company ABIX - Anheuser-Busch ABL - Alameda Belt Line ABLX - American Refrigerator Transit Company ABM - Texas and Pacific Railway; Missouri Pacific Railroad ABMX - Albers Brothers Milling Company ABN - Alabama Northern Railway; Ashland Railway ABOX - American Rail Box Car Company; Railbox Company; TTX Company ABPR - Aberdeen and Briar Patch Railway; Aberdeen, Carolina and Western Railway ABPX - Ashland By-Product Coke Company; Animal By-Products Corporation ABR - Athens Lines LLC ABRX - Merchants Despatch Transportation Corporation; AB Rail Investments; Railmark Holdings ABSX - American Beet Sugar Company; American Crystal Sugar Company ABTX - Aubrey Bartlett; North American Car Corporation; General Electric Railcar Services Corporation ABWX - Asea Brown Boveri ABX - Adirondack Bottled Gas Corporation; Home Gas Corporation of Great Barrington AC - Algoma Central and Hudson Bay Railway; Algoma Central Railway; Algoma Central Railroad; Algoma Central Railway; Canadian National Railway ACAX - Aluminum Company of America; Allied Chemical Canada; Allied Chemical Company; Honeywell International ACBL - American Commercial Barge Lines ACBX - Scandinavian Oil Company ACCX - Ansul Chemical Company; Ansul Chemical Company; Consolidation Coal Company ACDX - Allied Chemical Corporation; First Union Properties; Allied Chemical Company; AlliedSignal; Honeywell International ACEX - Atlantic City Electric Power Company; Atlantic Cement Company; Blue Circle Atlantic; Ace Cogeneration Company ACFX - American Car and Foundry Company; Shippers' Car Line Division of ACF Industries; ACF Industries; General Electric Railcar Services Corporation; General Electric Rail Services Corporation ACGX - Acme Gas Corporation; Suburban Propane, LP ACIS - Algoma Central Railway; Algoma Central Railroad; Algoma Central Railway; Canadian National Railway ACIX - Arkansas Chemicals; Great Lakes Chemical Corporation ACJR - Ashtabula, Carson and Jefferson Railroad ACJU - American Coastal Lines Joint Venture ACL - Atlantic Coast Line Railroad; Seaboard Coast Line Railroad; Seaboard System Railroad; CSX Transportation ACLU - Atlantic Container Line ACLX - American Car Line Company ACMX - Allis-Chalmers Corporation; Voith Hydro ACNU - AKZO Chemie, B V ACOU - Associated Octel Company ACOX - Aurora Cooperative Elevator Company (grain shippers) ACPX - Amoco Canada Petroleum Company; Amoco Oil Company ACPZ - American Concrete Products Company ACRC - Andalucia and Conecuh Railroad ACRX - American Chrome and Chemicals ACSU - Atlantic Cargo Services, AB ACSX - First Union Properties, Inc.; Honeywell International ACSZ - American Carrier Equipment ACTU - Associated Container Transport (Australia) ACTX - Allied Chemical Company; Honeywell International ACUU - Acugreen Limited ACWR - Aberdeen, Carolina and Western Railway ACWZ - Union Pacific Railroad ACXU - Atlantic Cargo Services, AB ACXX - Anderson Columbia Company ACY - Akron, Canton and Youngstown Railroad; Norfolk and Western Railway; Norfolk Southern Railway ACZX - A C Railroad Service Company AD - Atlantic and Danville Railway; Norfolk, Franklin and Danville Railway ADBF - Adrian and Blissfield Rail Road Company ADCU - Flexi-Van Leasing ADIR - Adirondack Railway ADKU - AGA A/S ADMX - Archer Daniels Midland ADN - Ashley, Drew and Northern Railway; Arkansas, Louisiana and Mississippi Railroad ADRX - Addeleston Recycling Corporation ADSX - Andrew Merrilees AE - Arizona Eastern Railroad AEC - Atlantic and East Carolina Railway AECX - Associated Electric Cooperative AEFR - Aurora, Elgin and Fox River Electric Company AEIX - Alan Eslisk AEIZ - Farrell Lines AEPU - American Lines AEPX - American Electric Power Service Corporation AER - Algoma Eastern Railway AERC - Albany and Eastern Railroad AESX - A. E. Staley Manufacturing; GE Railcar Services Corporation AEVX - AKZO Coatings AEX - The Andersons AF - Alabama and Florida Railway AFCU - Afram Lines AFCX - Atel Capital Equipment Fund AFCZ - Afram Lines AFEX - Farmers Elevator Company of Arthur, ND AFFX - AFFCAR, Inc. AFIU - ABS Industrial Verification AFIZ - Agmark Foods AFLR - Alabama and Florida Railroad AFPX - Fibers and Plastics Company (Allied Corporation); Honeywell International AFRX - AF Railway Industries AFSX - Astoria, LLC AFTX - American Freedom Train AG - Abbeville-Grimes Railway; Galveston Railroad; A and G Railroad; The Bay Line Railroad; Galveston Railroad AGCR - Alamo Gulf Coast Railroad AGCX - Alberta Gas Chemicals; PROCOR AGEX - A. G. Pipe Lines; NOVA Chemicals AGFX - Anchor Gas and Fuel Company AGHX - Agrium US AGIX - AGRI Financial Services; AGRI Industries AGLF - Atlantic and Gulf Railroad; Knoxville and Holston River Railroad AGLX - Andrews Gas Liquids Service; Andrews Petroleum AGMX - Terra Nitrogen, LP AGPX - AG Processing AGR - Alabama and Gulf Coast Railway AGRD - A and G Railroad AGRX - Agrifos, LLC AGS - Alabama Great Southern Railroad AGW - Alberta and Great Waterways Railway AGYX - American Gypsum Company; Centrex Construction Products AHCX - Arcadian Corporation AHMX - Altos Homos de Mexico, SA de CV AHT - Alaska Hydro-Train AHW - Ahnapee and Western Railway; Green Bay and Western; Fox Valley and Western; Wisconsin Central; Canadian National Railway AHWZ - Fox Valley and Western AICX - Hoeganaes Corporation AIDU - Albermarle Corporation AIEU - Aviation Import Export AIIZ - III Transportation AINX - TTX Company (Acorn Division) AIPX - Atlas Iron Processors AITU - Western Intermodal AJ - Alma and Jonquieres Railway AJCU - Australia Japan Container Line AJPX - North American Chemical Company; IMC Chemicals AJR - Artemus-Jellico Railroad AKC - Arkansas Central Railroad AKDN - Acadian Railway AKFX - AKF Corporation AKLU - K Line AKMD - Arkansas Midland Railroad AKMX - Helm Financial Corporation AKZX - AKZO Nobel Chemicals AL - Almanor Railroad ALAB - Alabama Railroad ALAX - Lyondell Petrochemical; Equistar Chemicals, LP ALBX - Albert City Elevator ALCX - Aluminum Company of Canada; Alcan Smelters and Chemicals ALEX - AGRI Financial Services; AGRI Industries ALGX - Amsterdam Leasing ALLX - Alliance Machine Company ALLZ - Alliance Shippers ALM - Arkansas, Louisiana and Missouri Railroad ALMX - Trinity Rail Management ALNX - Government of Alberta ALPX - Government of Alberta ALQS - Aliquippa and Southern Railroad ALRX - A and R Leasing, LLP ALS - Alton and Southern Railway; Alton and Southern Railroad; Missouri Pacific Railroad; Chicago and North Western Railway; St. Louis Southwestern Railway; Southern Pacific Railroad; Union Pacific Railroad ALSX - Albis Canada, Inc. ALTU - VTG Vereinigte Tanklage U Transportmittel, GMBH ALTX - Southern Illinois Railcar ALU - Alcolu Railroad ALUX - Alumax of South Carolina ALWX - GE Railcar Services Corporation ALY - Allegheny Railroad; Allegheny and Eastern Railroad AM - Arkansas and Missouri Railroad AMAX - AMAX Coal Company AMBU - Amber Line AMBX - Amherst Industries; American Boiler Works AMC - Amador Central Railroad; Arkansas, Louisiana and Mississippi Railroad AMCX - Amoco Chemicals Corporation; Amoco Oil Company; BP Amoco Chemical Company (Chemical Division) AMCZ - Interbulk AMEX - Albamex; Allied Entreprises AMFU - Amphibious Container Leasing AMGX - AMG Resources Corporation AMHR - Amherst Industries; Landisville Railroad AMIU - American Marine Industries AMIX - Railcar Leasing Specialists AMIZ - American Marine Industries AMLX - American Railcar Company AMMU - Hyundai AMMX - Amoco Minerals Company; Kentucky-Tennessee Clay Company AMNX - American Railcar Leasing Partners AMOX - Amoco Oil Company; BP Products North America AMOZ - American Oil Company AMPX - GE Railcar Services Corporation AMR - Arcata and Mad River Railroad; Eureka Southern Railroad; North Coast Railroad; Northwestern Pacific Railroad; Southern Pacific Railroad; Union Pacific Railroad AMRU - Alaska Marine Lines AMRX - Consolidated Oil and Transportation Company AMRZ - American Chassis Leasing AMSX - AllTrans Management Services Corporation AMT - Agence métropolitaine de transport AMTK - Amtrak AMTZ - Amtrak AMWX - Amway Corporation AMXU - Americas Marine Express AN - Apalachicola Northern Railroad; AN Railway; DuPont; Rail Management Corporation ANAU - Alliance Navigation Line ANAX - Excel Railcar Corporation; GE Rail Services Corporation ANBX - Anbel Corporation ANC - Atlantic and North Carolina Railroad ANCX - Norit Americas ANDX - Andesite Rock Company ANIX - Associacion National de la Industria Quimca, A.C. ANN - Anthony and Northern Railway ANKX - A and K Railroad Materials, Inc. ANR - Angelina and Neches River Railroad ANSX - Ansco Investment Company ANY - Athabasca Northern Railway AOCU - Associated Octel AOCX - Aluminum Company of America (Alcoa) AOEX - American Orient Express Railway AOIX - Marathon Ashland Petroleum Company AOK - Arkansas-Oklahoma Railroad AOR - Aliquippa and Ohio River Railroad; Ohio Central Railroad AOUX - Alberta and Orient Glycol Company APA - Apache Railway APAX - West Penn Power Company; Cimentos Apasco, SA de CV APCU - American President Lines APCX - Allied Products Company; Allied Lime Company APD - Albany Port District APEX - Apex Tank Car Line APHX - Air Products Polymers APIX - The Commonwealth Plan APLU - American President Lines APLX - APL Land Transport Services APLZ - American President Lines APMU - Maersk Lines APMX - Air Products Manufacturing Company APMZ - Maersk Equipment Service Company APNC - Appanoose County Community Railroad APOX - Alabama Power Company APRX - Air Products and Chemicals Company APSX - Arizona Public Service Company APTX - Air Products and Chemicals APWX - Appalachian Power Company APXX - Alberta Prairie Rail Excursions AQCX - Aqua-Chem (Celaver Brooks Division) AR - Aberdeen and Rockfish Railroad ARA - Arcade and Attica Railroad ARC - Alexander Railroad ARCX - Alaska Rail Car Company; Arizona Rail Car ARDP - Missouri Pacific Railroad; Doniphan, Kensett and Searcy Railway; Missouri Pacific Railroad; Union Pacific Railroad ARDU - CATU Containers, SA ARE - A and R Line AREX - Aeropres Corporation ARGX - Associated Railcar ARHU - CATU Containers ARHX - Arch Mineral Corporation ARIX - Arco Industrial Gases (a division of Arco); GE Rail Services Corporation ARJX - Arch Chemicals ARL - Armour Refrigerator Line (expired) ARMH - Missouri Pacific Railroad; Texas-New Mexico Railway; Doniphan, Kensett and Searcy Railway; Missouri Pacific Railroad; Union Pacific Railroad ARMN - Missouri Pacific Railroad; Union Pacific Railroad (Union Pacific Chilled Express) ARMX - American Rail and Marine Corporation ARMZ - Armasal Line ARN - Alberta RailNet AROX - GATX Corporation ARPX - Arco Petroleum Products Company; BP Products North America ARR - Alaska Railroad ARRG - Altra Railroad