AA
| Ann Arbor | 7 |
AAR
| Association of American Railroads | 8 |
AARX
| Association of American Railroads | 1 |
ABC
| Atlanta Birmingham & Coast | 1 |
AC
| Algoma Central | 2 |
ACL
| Atlantic Coast Line | 6 |
Acme
| Acme Steel | 1 |
ACWR
| Aberdeen, Carolina & Western | 1 |
ACY
| Akron, Canton & Youngstown | 1 |
ADBF
| Adrian and Blissfield Rail Road Company | 1 |
ADIX
| Adirondack Railway Preservation Society | 1 |
AERC
| Albany and Eastern Railroad Company | 14 |
AFT
| AMERICAN FREEDOM TRAIN FOUNDATION | 1 |
AKS
| AK Steel | 3 |
ALCO
| AMERICAN LOCOMOTIVE COMPANY | 2 |
ALHX
| AllCapital Rail Management, LLC | 1 |
ALL
| America Latina Logistica | 4 |
ALLX
| AllCapital Rail Management, LLC | 1 |
ALM
| Arkansas Louisiana and Mississippi Railr | 1 |
ALS
| Alton & Southern Railway | 8 |
AM
| Arkansas & Missouri | 1 |
AMTK
| Amtrak | 128 |
AMTL
| Agence métropolitaine de transport | 1 |
AOK
| Arkansas-Oklahoma Railroad | 1 |
AOKX
| Greenbrier Management Services, LLC | 1 |
AOSX
| Age Of Steam, Ltd | 1 |
AR
| Aberdeen and Rockfish | 3 |
ARCE
| ARCE | 2 |
ARR
| Alaska Railroad | 12 |
ASAB
| Bay Line Railroad LLC | 2 |
ASFX
| American Steel Foundries | 3 |
ASLX
| American Surface Lines, LLC | 5 |
AT
| Auto Train | 3 |
ATGM
| ATGM | 2 |
ATRX
| ATLANTA RAILCAR COMPANY | 1 |
ATSF
| Atchison Topeka & Santa Fe | 35 |
AVCX
| AVCX | 2 |
AWP
| Atlanta & West Point | 1 |
BA
| Baltimore & Annapolis | 2 |
BAP
| Butte Anaconda & Pacific | 2 |
BAR
| Bangor & Aroostook | 4 |
BART
| BART | 1 |
BBCX
| ABB Power Generation Incorporated | 1 |
BCOL
| Canadian National Railways | 6 |
BCPM
| British Columbia Provincial Museum | 1 |
BCVX
| West Coast Express | 1 |
BEN
| BEN | 4 |
BERY
| BERY | 2 |
BFIX
| Borden Foods | 1 |
BHC
| Black Hills Central | 2 |
BLE
| Bessemer & Lake Erie | 3 |
BLPX
| BLPX | 2 |
BM
| Boston & Maine | 13 |
BML
| Belfast & Mooshead Lake | 1 |
BMLP
| BMLP | 1 |
BN
| Burlington Northern | 42 |
BNH
| BNH | 4 |
BNSF
| BNSF Railway | 28 |
BO
| Baltimore & Ohio | 16 |
BOOT
| BOOT | 2 |
BPRR
| Buffalo and Pittsburgh | 2 |
BR1
| British Railways | 16 |
BRC
| Belt Railway of Chicago | 1 |
BRSR
| BRSR | 2 |
BSCX
| Bethlehem Steel Corporation | 2 |
BSRX
| Branson Scenic | 1 |
BST
| BST | 1 |
BTC
| Birmingham Terminal | 1 |
BUDD
| BUDD | 1 |
BWCX
| GE Plastics | 1 |
CA
| Chesapeake & Albemarle | 2 |
CAE
| Chicago Aurora & Elgin | 7 |
CAGY
| Columbus & Greenville Railway | 2 |
CASS
| Cass Scenic | 1 |
CBH
| CBH | 1 |
CBQ
| Chicago Burlington & Quincy | 38 |
CBQZ
| Chicago, Burlington & Quincy | 1 |
CBRL
| CBRL | 1 |
CBRY
| Copper Basin Railway | 1 |
CCCX
| CII Carbon, LLC | 1 |
CCRX
| Cape Cod Railroad | 1 |
CCW
| Charles City & Western | 1 |
CDRX
| CDRX | 1 |
CDTX
| California DOT | 4 |
CEBX
| Combustion Engineering Incorporated | 3 |
CEI
| Chicago & Eastern Illinois | 2 |
CFW
| Caney fork & Western | 1 |
CG
| Central Of Georgia | 9 |
CGW
| Chicago Great Western | 5 |
CHD
| CHD | 1 |
CHV
| Chattahoochee Valley Ry | 1 |
CIC
| Cedar Rapids & Iowa City | 3 |
CIM
| Chicago And Illinois Midland | 3 |
CIMX
| CIMX | 1 |
CJ
| CJ | 1 |
CLE
| Cincinnati & Lake Erie | 2 |
CMS
| CMS | 2 |
CN
| Canadian National Railways | 106 |
CNGU
| Sicng (Ind. Chim. Du Nord de la Grece S.A.) | 1 |
CNJ
| Central Rail Road of New Jersey | 3 |
CNO
| CNO | 1 |
CNOR
| Cincinnati Northern | 3 |
CNR
| CNR | 1 |
CNSM
| CHICAGO NORTH SHORE & MILWAUKEE RWY | 10 |
CNW
| Chicago & Northwestern | 22 |
CNWX
| Canadian Wheat Board | 1 |
CO
| Chesapeake & Ohio | 25 |
CONX
| ConocoPhillips Company | 2 |
COP
| City of Prineville Railway | 1 |
COPX
| CanadianOxy Industrial Chemicals Limited Partnership | 1 |
CORP
| Central Oregon & Pacific | 1 |
COTX
| GLNX Corp | 1 |
CP
| Canadian Pacific Railway | 51 |
CPMY
| Coopersville & Marne Railway | 1 |
CPOX
| Consumers Power Company (Mich.) | 1 |
CPT
| Canadian Pacific Railway | 1 |
CR
| Conrail | 16 |
CRGX
| Cargill Incorporated | 1 |
CRIP
| Chicago Rock Island & Pacific | 23 |
CRLE
| Coe Rail Incorporated | 1 |
CRR
| Clinchfield | 2 |
CRRX
| Canon City and Royal Gorge Railroad LLC | 1 |
CRT
| CHICAGO RAPID TRANSIT CO. | 1 |
CS
| Colorado & Southern | 3 |
CSL
| Chicago Short Line Railway Company | 1 |
CSS
| Chicago South Shore And South Bend | 10 |
CSX
| CSX Railroad | 61 |
CTA
| Chicago Transit Authority | 6 |
CTS
| Cumbres & Toltec Scenic | 4 |
CTVX
| Cleveland Terminal and Valley Railway Incorporated | 2 |
CV
| Central Vermont | 4 |
CVAR
| Cedar Valley Railroad | 1 |
CVSR
| Cuyahoga Valley Scenic RR | 3 |
CW
| Colorado and Wyoming | 1 |
CWI
| Chicago and Western Indiana | 3 |
CWP
| Chicago West Pullman & Southern | 1 |
CWRO
| Cleveland Works Rail Operations | 3 |
CWRX
| CWR TRANSPORTATION CO. | 1 |
CWWR
| Chehalis Western | 1 |
DAFX
| Department of Defence Troop Support and Aviation Material Re | 12 |
DART
| Dallas Area Rapid Transit | 1 |
DB
| Deutsche Bahn | 3 |
DBSO
| DBSO | 1 |
DCCX
| McDonnell Douglas Corporation | 6 |
DCLR
| Delaware Coast Line RR Co | 1 |
DCRR
| Dubois County Railroad | 3 |
DH
| Delaware & Hudson | 5 |
DIR
| DIR | 2 |
DL
| Delaware-Lackawanna Railroad Company | 3 |
DLMX
| Daylight Locomotives and Machine Works Incorporated | 2 |
DLW
| Delaware Lackawanna & Western | 5 |
DMFD
| DMFD | 1 |
DMIR
| Duluth Missabe & Iron Range | 3 |
DNE
| Duluth and Northeastern Railroad Company | 1 |
DODX
| Department Of Defense | 2 |
DOT
| DOT | 2 |
DOTX
| USDOT/Federal Railroad Administration | 6 |
DPL
| DPL | 3 |
DPP
| DPP | 1 |
DRCX
| Denver Railway Car Co | 1 |
DRG
| DRG | 2 |
DRGW
| Denver & Rio Grande Western | 19 |
DRI
| Davenport Rock Island and North Western | 1 |
DS
| Durham & Southern | 1 |
DSNG
| Durango & Silverton Narrow Gauge Railroa | 3 |
DSRC
| Dakota Southern Railway Company | 7 |
DSSA
| Duluth, South Shore & Atlantic | 1 |
DT
| Decatur Junction Railway Company | 1 |
DT1
| Detroit Terminal | 1 |
DTI
| Detroit Toledo & Ironton | 4 |
DUQU
| DUQU | 3 |
DVZO
| DVZO | 1 |
DWP
| Duluth Winnipeg & Pacific | 1 |
EBT
| East Broad Top | 7 |
EFOM
| EFOM | 1 |
EGSX
| Entergy Gulf States Incorporated | 1 |
EJE
| Elgin Joliet and Eastern | 5 |
EL
| Erie Lackawanna | 19 |
ELS
| Escanaba and Lake Superior Railroad Comp | 1 |
EMDX
| EMD | 3 |
EMHU
| EMP | 1 |
EMSR
| EMSR | 1 |
EQUS
| EQUS | 1 |
ERES
| Erie Western | 1 |
ERIE
| Erie Railroad | 8 |
ESNA
| Eureka Springs and North Arkansas | 1 |
ETWN
| ETWN | 1 |
EV
| Everett Railroad | 2 |
EXFU
| EXSIF Worldwide, Inc. | 2 |
FDEL
| FDEL | 1 |
FEC
| Florida East Coast | 5 |
FEPA
| FEPA | 4 |
FGLK
| Finger Lakes Railway | 3 |
FNE
| TFM S.A de C.V. | 1 |
FNM
| Ferrocarriles Nacionales de Mexico | 1 |
FPEC
| FPEC | 2 |
FRA
| Federal Railroad Administration | 1 |
FRIE
| FRIE | 2 |
FRR
| Falls Road Railroad Company Incorporated | 1 |
FSX
| FSX | 1 |
FVGS
| FVGS | 1 |
FW
| Fillmore & Western | 2 |
FWD
| Fort Worth & Denver | 1 |
FWGX
| FWGX | 1 |
GA
| Georgia Railroad | 1 |
GACX
| General American Marks Company | 1 |
GBW
| Green Bay & Western | 4 |
GC
| Georgia Central | 1 |
GCLX
| Gold Coast Limited | 1 |
GCOX
| Gold Coast Railroad Museum | 1 |
GCRR
| GCRR | 1 |
GCRX
| Grand Canyon Railway Incorporated | 1 |
GCRY
| Grand Canyon Railway | 3 |
GCSX
| Granite City Steel Co | 3 |
GECX
| General Electric Company | 2 |
GEX
| General Electric Company | 1 |
GFA
| GFA | 1 |
GHD
| GHD | 1 |
GLRX
| Georgetown Loop Railroad Incorporated | 2 |
GM
| Gainesville Midland | 1 |
GMO
| Gulf Mobile & Ohio | 13 |
GMRC
| Green Mountain RR | 1 |
GN
| Great Northern | 24 |
GNER
| Great North Eastern Railway | 3 |
GNWR
| Genesee and Wyoming Railroad Company | 12 |
GOT
| GO Transit | 3 |
GPEX
| General American Pfaudler | 2 |
GPSX
| Georgia-Pacific Corporation Eastern Wood Products Mfg.Divisi | 3 |
GPUX
| GPU Service Corporation | 1 |
GREX
| Georgetown Rail Equipment Company | 1 |
GRR
| Georgetown Railroad Company | 2 |
GSM
| Great Smokey Mountains Railway | 1 |
GSMR
| Great Smoky Mountains | 2 |
GSSX
| Gopher State Scrap and Metal | 1 |
GTW
| Grand Trunk Western | 13 |
GWR
| Great Western Railway Company | 1 |
HEPX
| Ontario Hydro | 1 |
HLXU
| Hapag Lloyd Container Line | 1 |
HODX
| Heart of Dixie Railway Museum | 3 |
HRRC
| Housatonic Railroad Company | 1 |
HRT
| Hartwell RR | 1 |
HRZ
| HRZ | 1 |
HSRR
| Hardin Southern Railroad Incorporated | 1 |
HVRX
| Heber Valley Historic Railroad | 1 |
HZGX
| Herzog Contracting Corporation | 1 |
IAIS
| Iowa Interstate | 1 |
IANR
| Iowa Northern Ry | 1 |
IATR
| Iowa Traction Railroad Company | 2 |
IC
| Illinois Central | 17 |
ICE
| Iowa Chicago and Eastern | 8 |
ICG
| Illinois Central Gulf | 4 |
ICGX
| ICGX | 1 |
IFRX
| Infinity Rail LLC | 1 |
IHB
| Indiana Harbor Belt | 2 |
IMRL
| I&M Rail Link | 1 |
IN
| Indiana Northeastern | 2 |
INLX
| Incoal Company | 42 |
INPR
| Idaho Northern and Pacific Railroad | 1 |
INR
| INR | 1 |
INRD
| Indiana Railroad | 1 |
IRYM
| Illinois Railway Museum | 1 |
ISCX
| ISC Incorporated | 28 |
ISG
| International Steel Group | 1 |
ISGX
| International Steel Group | 5 |
ITC
| Illinois Terminal Railroad | 3 |
ITFX
| INFINITY TRANSPORTATION III LLC | 1 |
ITSX
| ITSX | 1 |
JAIX
| JAIX Leasing Corporation | 2 |
JPBX
| Joint Powers Board (CalTrain) | 1 |
JTCX
| Juniata Terminal | 2 |
JWKX
| JWKX | 1 |
KC
| KC | 1 |
KCS
| Kansas City Southern | 14 |
KJR
| Kiski Junction Railroad | 1 |
KJRY
| Keokuk Junction | 1 |
KKRR
| Knox and Kane Railroad Company | 2 |
KMUX
| Kershaw Manufacturing Company | 1 |
KOR
| KOR | 1 |
KRL
| Kasgro Rail Lines | 2 |
KRLX
| KRLX | 2 |
KT
| Kentucky and Tennessee Railway Company | 2 |
KTS
| Kenosha Trolley | 3 |
KWUX
| Siemens Power Corporation | 3 |
KXHR
| Knoxville & Holston River RR | 1 |
LAL
| Livonia Avon & Lakeville | 1 |
LC
| Lancaster & Chester | 1 |
LCS
| LCS | 1 |
LEW
| LEW | 1 |
LHR
| Lehigh & Hudson River | 1 |
LI
| Long Island Rail Road Company | 12 |
LIRR
| Long Island Railroad | 36 |
LKPR
| LKPR | 1 |
LMIX
| Loram Maintenance of Way Inc. | 2 |
LN
| Louisville & Nashville | 19 |
LNE
| Lehigh and New England Ry | 1 |
LOK
| LOK | 1 |
LRS
| Laurinburg and Southern | 1 |
LRWN
| Little Rock & Western | 1 |
LSI
| Lake Superior and Ishpeming Railroad | 1 |
LSM
| LSM | 1 |
LSRC
| Lake State Railway Company | 2 |
LV
| Lehigh Valley | 3 |
LVRC
| Lamoille Valley | 1 |
LVRR
| Lycoming Valley | 1 |
LVT
| LVT | 1 |
LW
| Louisville and Wadley Railway Company | 1 |
LWV
| LWV | 1 |
MAA
| Magma Arizona Railroad Company | 1 |
MARC
| Maryland Transit Administration | 2 |
MB
| Meridian & Bigbee | 1 |
MBKX
| Mitsui Rail Capital | 1 |
MBL
| MBL | 1 |
MBTA
| Massachusetts Bay Transit Authority | 16 |
MBTX
| MBTX | 1 |
MC
| Mass Coastal | 2 |
MCER
| Massachusetts Central Railroad | 1 |
MCFD
| MCFD | 1 |
MCRY
| MCRY | 1 |
MDRY
| Midland Railway Historical Association | 1 |
MDS
| Meridian Southern Railway, LLC | 1 |
MDTC
| MDTC | 1 |
ME
| Morristown & Erie Railroad | 1 |
MEC
| Maine Central | 14 |
MERA
| MERA | 2 |
MESX
| Mears/CPG Incorporated | 1 |
METR
| METR | 3 |
METX
| METRA | 2 |
MHAX
| US Dept of Interior-Bureau of Mines Helium Field Operations | 1 |
MHC
| Mohall Railroad Inc. | 1 |
MHWA
| Mohawk Adirondack and Northern Railroad | 1 |
MIGN
| Michigan Northern | 2 |
MILW
| Milwaukee Road | 33 |
MINE
| MINE | 1 |
MIXE
| MIXE | 1 |
MK
| MK | 1 |
MKC
| McKeesport Connecting Railroad Company | 1 |
MKFX
| Century Rail Enterprises Inc. | 1 |
MKT
| Missouri-Kansas-Texas | 6 |
MNA
| Missouri and Northern Arkansas | 1 |
MNCR
| Metro North Commuter Railway | 8 |
MNCW
| Metro-North Commuter Railroad | 2 |
MNS
| Minneapolis Northfield & Southern | 7 |
MODE
| MODE | 2 |
MON
| Monon Route | 2 |
MP
| Missouri Pacific | 15 |
MPA
| Maryland and Pennsylvania Railroad | 1 |
MPCX
| Michels Corporation | 1 |
MQT
| Marquette Rail | 1 |
MR
| McCloud Railway Company | 3 |
MRBT
| MRBT | 1 |
MRL
| Montana Rail Link | 5 |
MRLX
| Mid America Rail Car Leasing | 1 |
MRSL
| MRS Logistica | 3 |
MSRW
| Mississippian Railway Cooperative Incorporated | 1 |
MSTL
| Minneapolis & St Louis | 16 |
MSTX
| MSTX | 1 |
MTA
| NYC Transit | 2 |
MTFR
| MTFR | 1 |
MTRX
| TransMatrix Incorporated | 1 |
MTS
| MTS | 2 |
MTSX
| MAX TRANSPORTATION SERVICE | 14 |
MTTX
| TTX Company | 1 |
MTW
| Marinette Tomahawk & Western | 1 |
MUNI
| San Francisco Municipal Railway | 2 |
MUR
| MUR | 1 |
MW
| MW | 4 |
MWC
| Midwest Central | 1 |
MWCR
| MWCR | 3 |
NARR
| NARR | 1 |
NBSR
| New Brunswick Southern Railway Company L | 1 |
NCCC
| NCCC | 1 |
NCNG
| NCNG | 1 |
NCSL
| Nashville Chattanooga & St Louis | 1 |
NCST
| NCST | 1 |
NCTM
| NCTM | 1 |
NDEM
| NDEM | 3 |
NDW
| NDW | 2 |
NERR
| Nashville and Eastern | 2 |
NH
| New Haven | 5 |
NHIR
| New Hope & Ivyland | 1 |
NHRR
| New Hope and Ivyland Rail Road | 1 |
NJT
| New Jersey Transit | 5 |
NKLX
| NKLX | 2 |
NKP
| Nickel Plate | 8 |
NN
| Northern Nevada Railroad Corporation | 3 |
NO
| NO | 1 |
NONE
| NONE | 2 |
NOPX
| NOPX | 1 |
NORT
| NORT | 11 |
NP
| Northern Pacific | 26 |
NPA
| NPA | 1 |
NRE
| NRE | 1 |
NRSU
| Nippon Riku-un Sangyo Company | 2 |
NS
| Norfolk Southern | 74 |
NSHR
| North Shore | 9 |
NSPD
| NSPD | 1 |
NSRM
| NSRM | 1 |
NSW
| Northwest Steel and Wire | 1 |
NUC
| NUC | 1 |
NUCX
| Nucor Steel | 1 |
NW
| Norfolk & Western | 16 |
NWP
| Northwestern Pacific Railroad Company | 1 |
NWSW
| Northwestern Steel and Wire | 1 |
NXGX
| NXGX | 1 |
NYC
| New York Central | 17 |
NYCH
| New York Cross Harbor Railroad Terminal Corporation | 1 |
NYCT
| NYCT | 5 |
NYLE
| New York and Lake Erie Railroad Company | 1 |
NYSW
| New York Susquehanna & Western | 5 |
OCE
| Oregon California & Eastern | 1 |
ODOT
| ODOT | 1 |
OERM
| OERM | 2 |
OHCR
| Ohio Central | 5 |
ONT
| Ontario Northland Railway | 11 |
OPE
| Oregon Pacific & Eastern | 1 |
PAL
| Paducah & Louisville | 4 |
PANO
| PANO | 2 |
PAT
| Port Auhority of Allegheny County | 1 |
PBNE
| Philadelphia Bethlehem and New England R | 1 |
PC
| Penn Central | 12 |
PE
| Peoria & Eastern | 6 |
PGE
| Pacific Great Eastern | 2 |
PHL
| Pacific Harbor Lines | 1 |
PHMX
| P&H Mining Equipment | 1 |
PKP
| Polish Railways | 1 |
PLE
| Pittsburgh & Lake Erie | 2 |
PM
| Pere Marquette | 1 |
PMEX
| Pemex | 1 |
PN
| PN | 2 |
PNR
| Panhandle Northern Railroad Company | 1 |
PNWC
| PNWC | 2 |
PNWR
| Portland and Western Railroad Incorporat | 1 |
PNWX
| PNWX | 1 |
POLS
| POLS | 1 |
PPL
| PPL | 1 |
PRR
| Pennsylvania Railroad | 26 |
PRSL
| Pennsylvania Reading Seashore | 1 |
PS
| Pittsburg and Shawmut Railroad Company | 1 |
PSBX
| PSBX | 1 |
PSR
| Pittsburg and Shawmut Railroad Incorporated | 2 |
PT
| Peninsula Terminal Company | 2 |
PTCX
| PTCX | 1 |
PULL
| Pullman | 1 |
PW
| Providence and Worcester | 2 |
QNSL
| Quebec, North Shore and Labrador | 1 |
QTLR
| QTLR | 1 |
QTXX
| QTXX | 1 |
RAC
| RAC | 1 |
RBBX
| Ringling Bros. and Barnum and Bailey | 6 |
RBMN
| Reading Blue Mountain & Northern | 4 |
RBX
| Ringling Bros. and Barnum and Bailey | 2 |
RCPX
| Railcar Limited | 1 |
RDG
| Reading Railroad | 12 |
REA
| REA | 1 |
REX
| Railway Express Agency, Inc. | 5 |
RFCX
| ROTHSAY FARMERS CO-OPERATIVE | 1 |
RFP
| Richmond Fredericksburg & Potomac | 24 |
RGSX
| RGSX | 1 |
RIVE
| RIVE | 1 |
RJCC
| R.J. Corman Railroad/Kentucky Lines | 1 |
RJCP
| R.J. Corman Railroad Company/ Pennsylvan | 15 |
RJCW
| R.J. Corman Railroad Company/ Western Ohio Line | 1 |
RK
| RK | 1 |
RL
| Rutland Line Incorporated | 1 |
RMRX
| Great Canadian Railtours Co Ltd | 1 |
RMSX
| Pandrol Jackson Incorporated | 1 |
ROTA
| ROTA | 2 |
RPCX
| Railroad Passenger Car Numbering Bureau | 4 |
RRBX
| Rampart Range Corporation | 1 |
RRL
| RRL | 1 |
RRWX
| RRWX | 1 |
RSS
| Rockdale, Sandow & Southern Railroad | 1 |
RTD
| Regional Transportation District | 2 |
RTTX
| TTX Company | 1 |
RUMO
| RUMO | 4 |
RWM
| RWM | 1 |
SAL
| Seaboard Air Line | 4 |
SALT
| SALT | 2 |
SAS
| South African Railways | 24 |
SBC
| Ferrocarril Sonora Baja California | 1 |
SBD
| Seaboard System | 3 |
SBVR
| South Branch Valley Rail Road | 1 |
SCAX
| SOUTHERN CALIFORNIA REGIONAL RAIL AUTHORITY | 5 |
SCFE
| South Central Florida Express Incorporated | 5 |
SCHN
| SCHN | 1 |
SCL
| Seaboard Coast Line | 5 |
SCRM
| SCRM | 1 |
SCX
| SCX | 1 |
SDNX
| Coaster | 3 |
SDTI
| SDTI | 3 |
SEAS
| SEAS | 1 |
SFBR
| SFBR | 1 |
SFG
| Societe du Chemin de Fer de la Gaspesie | 2 |
SFRT
| SFRT | 1 |
SH
| Steelton and Highspire Railroad Company | 1 |
SHIX
| SHIX | 1 |
SHRT
| Shaker Heights Rapid Transit | 3 |
SL-S
| SL-S | 3 |
SLCC
| St. Louis Car Company | 1 |
SLH
| SLH | 1 |
SLPR
| SLPR | 1 |
SLRG
| San Luis and Rio Grande Railroad | 1 |
SLSF
| Saint Louis-San Francisco | 10 |
SLUT
| South Lake Union Trolley | 1 |
SMV
| Santa Maria Valley Railroad Company | 1 |
SNDX
| Sound Transit | 1 |
SOO
| Soo Line | 16 |
SOR
| Southern Ontario Railway | 1 |
SOU
| Southern | 60 |
SP
| Southern Pacific | 24 |
SPAX
| Southeastern Pennsylvania Transportation (SEPTA) | 11 |
SPCC
| Southern Peru Copper Corp | 1 |
SPCX
| Qwest Communications Corporation | 2 |
SPEG
| Spencerville & Elgin | 1 |
SPEN
| SPEN | 1 |
SPGX
| Suburban Propane LP | 1 |
SPL
| SPL | 2 |
SPM
| SPM | 1 |
SPMW
| Southern Pacific Maintenance of Way | 9 |
SPQ
| Union Pacific Railroad Company | 1 |
SPR
| SPR | 1 |
SPS
| Spokane Portland & Seattle | 2 |
SPUD
| St. Paul Union Depot Company | 1 |
SRC
| Strasburg Railroad | 2 |
SRNJ
| Southern Railroad Company of New Jersey | 1 |
SRS
| Sperry Rail Service | 5 |
SRSX
| Sperry Rail Service | 1 |
SRT
| SRT | 2 |
SRTD
| SRTD | 1 |
SSVX
| SSI Industries (M of Way Cars) | 1 |
SSW
| St Louis Southwestern (Cotton Belt) | 3 |
STC
| STC | 1 |
STL
| STL | 1 |
STLH
| St. Lawrence & Hudson | 1 |
STRE
| STRE | 1 |
STRT
| Stewartstown Railroad Company | 1 |
SWF
| SWF | 1 |
SWX
| SWX | 1 |
SXSX
| Winter Bird Corporation | 1 |
TBCX
| Boeing Company | 8 |
TBH
| TBH | 1 |
TCAX
| General Electric Rail Services | 1 |
TCGB
| TCGB | 1 |
TCRT
| TCRT | 1 |
TCSR
| Norfolk Southern Corporation | 63 |
TCST
| TCST | 2 |
TDB
| TDB | 4 |
TENN
| Tennessee Railway Company | 1 |
TEXX
| TEXX | 2 |
TFM
| Kansas City Southern De Mexico | 2 |
THB
| Toronto Hamilton & Buffalo | 2 |
TIOC
| Tioga Central | 1 |
TLEW
| TLEW | 1 |
TMER
| TMER | 2 |
TNO
| Texas & New Orleans | 1 |
TOC
| Toledo & Ohio Central | 1 |
TP
| Texas & Pacific | 3 |
TPHX
| Thomas Payne Holdings Incorporated | 2 |
TPW
| Toledo Peoria & Western | 1 |
TR
| Tomahawk Railway L.P. | 1 |
TRAI
| TRAI | 1 |
TRCX
| Florida Tri-Rail | 2 |
TRIM
| TRIM | 2 |
TRRA
| Terminal RR of St Louis | 3 |
TSBY
| Great Lakes Central Railroad | 2 |
TSCX
| The Steel Company of Canada, Ltd. | 1 |
TSSX
| U.S. Dept. of Energy Albuquerque Operations Office | 12 |
TSX
| TSX | 1 |
TT
| Toledo Terminal | 2 |
TTC
| Toronto Transit | 11 |
TTX
| TTX Company | 2 |
TUC
| TUC | 1 |
TVRM
| Tennessee Valley | 2 |
UMP
| Upper Merion and Plymouth Railroad | 1 |
UNKN
| UNKN | 1 |
UNPX
| Procor Limited | 1 |
UP
| Union Pacific Railroad Company | 42 |
UPP
| Union Pacific Passenger | 6 |
UPRU
| Union Pacific Railroad Company | 2 |
UPS
| | 1 |
URHX
| URHX | 1 |
URR
| Union Railroad | 2 |
US
| US | 1 |
USA
| USA | 2 |
USAF
| US Air Force | 3 |
USAX
| United States Army | 16 |
USDO
| USDO | 1 |
USMU
| US Department of Defense Marine Corps | 1 |
USN
| United States Navy | 4 |
USSD
| USSD | 1 |
USSX
| US Steel | 10 |
USVC
| USVC | 1 |
USWX
| USA Waste Services Incorporated | 5 |
UTAX
| Utah Frontrunner | 1 |
UTCX
| Union Tank Car Company | 1 |
UTLX
| Union Tank Car Company | 1 |
VAIX
| Vought Aircraft Industries Inc. | 3 |
VCY
| Galveston Railroad, L.P. | 1 |
VECX
| VeraSun Energy | 1 |
VIA
| Via Rail Canada | 5 |
VT
| Virginia & Truckee | 3 |
VTR
| Vermont Railway | 3 |
VULX
| Vulcan Materials | 3 |
WAB
| Wabash | 3 |
WAND
| Wisconsin and Michigan Railway Company | 1 |
WATC
| Washington Terminal Company | 2 |
WC
| Wisconsin Central | 4 |
WCLR
| Waccamaw Coastline | 1 |
WCTX
| West Central Cooperative | 1 |
WE
| Wheeling & Lake Erie | 3 |
WECX
| Westinghouse Electric Corporation | 8 |
WEPX
| Wisconsin Electric Power Company | 1 |
WES
| WES | 1 |
WGNS
| Wisconsin Great Northern Railroad Inc | 1 |
WIM
| WIM | 1 |
WLE
| WLE | 3 |
WM
| Western Maryland | 5 |
WNYP
| Western New York and Pennsylvania | 10 |
WNYX
| Western New York Railway Historical Society | 1 |
WOV
| Warren & Ouachita Valley | 1 |
WP
| Western Pacific | 6 |
WPMW
| Union Pacific Railroad Company | 1 |
WPSX
| Wisconsin Public Service | 3 |
WPYR
| White Pass & Yukon Route | 4 |
WRA
| Western Railway of Alabama | 1 |
WRRX
| Waldens Ridge Railroad | 1 |
WRSX
| Warren Railcar Service Incorporated | 1 |
WSOR
| Wisconsin & Southern | 5 |
WT
| Wrightsville & Tennille | 3 |
WTCX
| Weyerhauser | 1 |
WU
| WU | 1 |
WUTX
| WUTX | 1 |
WUX
| WUX | 1 |
WVRR
| Whitewater Valley Railroad | 1 |
WWF
| WWF | 3 |
WWRC
| Wilmington and Western Railroad | 1 |
XS
| XS | 1 |
YAMX
| YAMX | 1 |
YN
| Youngstown and Northern | 1 |
YRC
| York Rail | 2 |
YVT
| Yakim Valley Transportation Company | 1 |
ZNSU
| Norfolk Southern Corporation | 3 |