R RACN - Raccoon River Railroad RAIX - Union Carbide RAMX - Rail America RAPX - Rapco Transportation Company RAWX - Platte River Power Authority RAX - RPI-AAR Cooperative Test Program RBBN - Burlington Northern Railway RBBQ - Burlington Northern Railway RBBX - Western Fruit Express; Ringling Brothers and Barnum and Bailey Circus RBCS - Burlington Northern Railway RBMN - Reading, Blue Mountain and Northern Railroad RBNX - Fruit Growers Express RBOX - Railbox Company; TTX Corporation RBW - Burlington Northern Railway RC - Rosslyn Connecting Railroad RCCX - Relco Nevada Corporation (Relco Tank Line Division) RCOX - Arco Products Company RCRX - Reagent Chemical and Research, Inc. RDG - Reading Railroad; Conrail RE - Relco RECX - Central Louisiana Electric Company REDX - Saudi Research and Development Corporation, Ltd. (REDEC) REGX - Regus Industries LLC RELX - Relco Nevada Corporation (Relco Tank Line Division) RESX - Rescar, Inc. RFCX - R&F Coal Company RFMX - Robert F. Miller; Coldwell-Baker RFP - Richmond, Fredericksburg and Potomac Railroad; CSX Transportation RGCX - Rio Grande Chemical Sales Company RGIX - Republic Gas and Utilities Corporation RGS - Rio Grande Southern Railroad RGW - Rio Grande Western Railway RHAX - Sulphur Sales, Inc. RHBX - R. H. Bogle Company RHRX - Rahr Malting Company RI - Chicago, Rock Island and Pacific Railroad (Rock Island) RIIX - Reilly Industries, Inc. RILX - Interail, Inc. RJCC - R. J. Corman Railroad RJCW - R. J. Corman Railroad/Western Ohio Line RJNX - R. H. Bogle Company RKCX - Knox Kershaw, Inc. RKMW - Chicago, Rock Island and Pacific Railroad (Rock Island) Milwaukee Road directed operations RLGN - Mackenzie Northern Railway RLIX - Rail Link Inc. RLKX - R. L. and S. S. Klein RLSX - Robert L. Shipp RMCX - Reynolds Metals Company RMDX - American Refrigerator Transit Company RNDX - ACF Industries ROCK - Chicago, Rock Island and Pacific Railroad (Rock Island) ROCX (I) - Rock Island Improvement Company (Rock Island) ROCX (II) - Rocky Mountain Transportation Services ROIX - Shintech, Inc. ROYX - TCL, Inc. RPCX - Ralston Purina Company RPRC - Richmond Pacific Railroad RR - Conrail RREX - Rex Railway RRLX - Railroad Resources, Inc. (maintenance of way cars) RRRX - Rex Leasing, Inc. RS - Roberval and Saquenay Railway RSB - Rochester Subway RSLX - RSL Corporation RSOR - Riceboro Southern Railway RSP - Roscoe, Snyder and Pacific Railway RSPX - Evans Railcar Leasing RSR - Rochester and Southern Railroad RSS - Rochester Subway; Rockdale, Sandow and Southern Railroad RSTX - RSTX, Inc. RSUX - Riley Stoker Corporation RSVX - RAILSERV Management Corporation RSYX - Refined Sugars, Inc. RT - River Terminals Railway RTA - Regional Transportation Authority RTCX - Union Tank Car Company RTLX - Relco Nevada Corporation (Relco Tank Line Division) RTMX - Richmond Leasing Company RTPX - Wheelabrator Coal Services Company RTTX - TTX Corporation RUDX - Ruddy Tank Car Company RUSX - US Rail Services, Inc. RUT - Rutland Railroad; Vermont Railway RV - Rahway Valley Railroad RVCX - Richter Vinegar Corporation RVLX - Reinhardt Vinegar

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