List of reporting marks: O
Note: Marks ending in U are for container owners; marks ending in X are not common carriers; marks ending in Z are for trailers without flanged wheels. All other marks are of common-carrier railroads.
O[]
- OACX -
- OAR -
- OCCU -
- OCCX -
- OCE - Oregon, California and Eastern Railway
- OCEU -
- OCFX - Owens Corning Fiberglass
- OCLU -
- OCNU -
- OCPX - ;
- OCR -
- OCRR - Ottawa Central Railway
- OCRX -
- OCSU - Scripps Institute of Oceanography
- OCTL - Oil Creek and Titusville Lines
- OCTR - Octoraro Railway
- OCTX -
- ODTX -
- OEDX -
- OERX - Southern California Railway Museum
- OFCX -
- OFOX -
- OFSX -
- OGEE -
- OGEX - Oklahoma Gas and Electric Company
- OGSX -
- OHCR - Ohio Central Railroad
- OHFX -
- OHIC - Ohi-Rail Corporation
- OHIO - Ohio Terminal Railway
- OHKU -
- OHOX - United States Department of Energy (Ohio Field)
- OHPA - Ohio and Pennsylvania Railroad
- OHRY -
- OILX - GE Rail Services
- OJGX -
- OJTX -
- OKAN - Okanagan Valley Railway (OmniTRAX)
- OKCE -
- OKCX - Lone Star Industries
- OKKT - Oklahoma, Kansas and Texas Railroad; Union Pacific Railroad
- OLAU - Occidental Chemical Corporation
- OLB - Omaha, Lincoln and Beatrice Railway
- OLDX -
- OLLU -
- OLNX - Olin Corporation
- OLO - Ontario L'Orignal Railway
- OLYR -
- OLYU -
- OLYR -
- OLYX -
- OLYZ -
- OMAX - Omaha Public Power District
- OMID - Ontario Midland Railroad
- OMLP -
- OMLX -
- OMNX - Omnisource; Steel Dynamics.
- OMRX -
- OMSX - ;
- ONCT - Ontario Central Railroad
- ONER - Ontario Eastern Railroad
- ONSX - Oglebay Norton Industrial Sands, Inc.
- ONT - Ontario Northland Railway
- ONTA - Ontario Northland Railway
- ONTX -
- ONW - Oregon and Northwestern Railroad
- ONYX -
- OOCZ -
- OOLU - OOCL
- OOOX -
- OOUU -
- OPE - Oregon, Pacific and Eastern Railway
- OPIX -
- OPPX - Omaha Public Power District
- OPR - Oregon Pacific Railroad
- OPSU -
- OPSX - Public Service Company of Oklahoma
- OPT -
- OPX -
- OR - Owasco River Railway
- ORA -
- ORCU -
- OREX - Oregon Department of Agriculture
- OROX - United States Department of Energy (Oak Ridge Operations Office)
- ORR -
- OSCZ -
- OSL - Oregon Short Line; Union Pacific Railroad
- OSRX - Ontario Southland Railway
- OSSU -
- OTCO -
- OTCR -
- OTDX -
- OTPX - Otter Tail Power Company
- OTR - Oakland Terminal Railway
- OTRX -
- OTSX -
- OTT -
- OTTX - TTX Corporation
- OTVR - Otter Tail Valley Railroad (RailAmerica)
- OUCH - Ouachita Railroad
- OUCX - Orlando Utilities Commission
- OURD - Ogden Union Railway and Depot Company
- OVEX - Ohio Valley Electric Company
- OVNZ - Overnite Transportation Company
- OVO - Ottawa Valley Railway
- OVR -
- OWIX -
- OWLU -
- OWSX -
- OWTX -
- OXYU -
Categories:
- Lists of AAR reporting marks