ACEX
| Altamont Commuter Express | 8 |
ADIX
| Adirondack Railway Preservation Society | 1 |
AMKT
| AMKT | 1 |
AMTK
| Amtrak | 83 |
AMTL
| Agence métropolitaine de transport | 62 |
ARR
| Alaska Railroad | 1 |
ATSF
| Atchison Topeka & Santa Fe | 1 |
BBRX
| Bombardier Incorporated Transportation Equipment Group | 8 |
BCVX
| West Coast Express | 7 |
BGRM
| Bluegrass Railroad Museum | 1 |
BGRR
| Bluegrass Scenic Railroad | 1 |
BIS
| BIS | 1 |
BM
| Boston & Maine | 1 |
BN
| Burlington Northern | 21 |
BSB
| BSB | 7 |
BUDX
| Budd Company (temporary) | 1 |
CALT
| CALT | 1 |
CAMP
| CAMP | 1 |
CBQ
| Chicago Burlington & Quincy | 7 |
CD
| Ceske Drahy | 1 |
CDOT
| Conneticut Department of Transportation | 44 |
CDTX
| California DOT | 25 |
CFR
| CFR | 6 |
CFRC
| CFRC | 13 |
CIE
| CIE | 2 |
CNJ
| Central Rail Road of New Jersey | 5 |
CNW
| Chicago & Northwestern | 25 |
COME
| COME | 1 |
CP
| Canadian Pacific Railway | 2 |
CPTM
| Companhia Paulista de Trens Metropolitanos | 2 |
CRIP
| Chicago Rock Island & Pacific | 7 |
CRRX
| Canon City and Royal Gorge Railroad LLC | 1 |
CSS
| Chicago South Shore And South Bend | 1 |
CTA
| Chicago Transit Authority | 1 |
CZRY
| Carrizo Gorge Railway Inc. | 1 |
DB
| Deutsche Bahn | 12 |
DSB
| DSB | 1 |
EC
| EC | 1 |
EL
| Erie Lackawanna | 13 |
ERIE
| Erie Railroad | 2 |
FEPA
| FEPA | 1 |
FNRX
| FNRX | 2 |
FRYX
| Federated Railways Inc | 7 |
FS
| FS | 2 |
FTR
| Florida Tri-Rail | 1 |
GMRC
| Green Mountain RR | 1 |
GO
| Gulf and Ohio | 3 |
GOT
| GO Transit | 124 |
HTSX
| Ge Railcar Services Inc. | 1 |
IORP
| Turtle Creek & Lebanon | 1 |
JPBX
| Joint Powers Board (CalTrain) | 36 |
KRM
| Kentucky Railway Museum | 1 |
LGR
| LGR | 2 |
LI
| Long Island Rail Road Company | 23 |
MARC
| Maryland Transit Administration | 36 |
MBTA
| Massachusetts Bay Transit Authority | 162 |
ME
| Morristown & Erie Railroad | 1 |
METR
| METR | 3 |
METX
| METRA | 277 |
MILW
| Milwaukee Road | 2 |
MLU
| MLU | 6 |
MNCR
| Metro North Commuter Railway | 78 |
MNCW
| Metro-North Commuter Railroad | 42 |
MNRR
| Modoc Northern Railroad Company | 10 |
MNRX
| Minnesota Northstar | 6 |
MRTX
| MRTX | 1 |
MTA
| NYC Transit | 9 |
MTBA
| MTBA | 1 |
MTDX
| Midwest Transportation & Development Cor | 6 |
MULT
| MULT | 4 |
NCTD
| NCTD | 6 |
NERR
| Nashville and Eastern | 2 |
NHIR
| New Hope & Ivyland | 1 |
NIRC
| NIRC | 1 |
NJDO
| NJDO | 4 |
NJT
| New Jersey Transit | 256 |
NJTR
| NJ Transit Rail Operations | 51 |
NMRX
| New Mexico Department Of Transportation | 9 |
NRTX
| Nashville Music City Star | 7 |
NYSW
| New York Susquehanna & Western | 1 |
OAE
| OAE | 1 |
OBB
| OBB | 7 |
PAT
| Port Auhority of Allegheny County | 1 |
PORT
| PORT | 1 |
PRR
| Pennsylvania Railroad | 1 |
PSTR
| PSTR | 1 |
RBMN
| Reading Blue Mountain & Northern | 1 |
RPCX
| Railroad Passenger Car Numbering Bureau | 1 |
RRW
| Rockton Rion & Western | 4 |
RTA
| Regional Transportation Authority | 41 |
RTD
| Regional Transportation District | 3 |
RTI
| Rail Tours | 2 |
RTM
| RTM | 1 |
SBB
| Swiss Railways | 6 |
SCAX
| SOUTHERN CALIFORNIA REGIONAL RAIL AUTHORITY | 97 |
SCL
| Seaboard Coast Line | 1 |
SCRX
| SOUTH CAROLINA PUBLIC RAILWAYS | 21 |
SDNR
| SDNR | 5 |
SDNX
| Coaster | 10 |
SDRX
| Central Puget Sound Regional Transit Authority | 22 |
SFG
| Societe du Chemin de Fer de la Gaspesie | 1 |
SFRT
| SFRT | 10 |
SLE
| SLE | 3 |
SLRS
| SMS Rail Service Incorporated | 1 |
SNCB
| SNCB | 1 |
SNCF
| French National Railways | 3 |
SNDX
| Sound Transit | 23 |
SPAX
| Southeastern Pennsylvania Transportation (SEPTA) | 23 |
SRR
| SRR | 3 |
SRT
| SRT | 1 |
STCU
| STCU | 11 |
TA
| TA | 5 |
TCCX
| TCCX Corporation | 6 |
THSX
| New York, Susquehanna & Western Rwy. | 1 |
TRCX
| Florida Tri-Rail | 21 |
TRE
| TRE | 6 |
TRWX
| Trinity Railway Express | 10 |
TTAX
| TTX Company - Spine Cars | 1 |
TUGX
| Texas Utilities Mining Company | 2 |
UP
| Union Pacific Railroad Company | 1 |
UTA
| UTA | 4 |
UTAX
| Utah Frontrunner | 22 |
VIA
| Via Rail Canada | 4 |
VRE
| Virginia Railway Express | 48 |
WCE
| WCE | 2 |
WCRL
| West Chester Railroad Company | 1 |
WGRR
| WGRR | 2 |
WRM
| WRM | 1 |
WSOR
| Wisconsin & Southern | 1 |