AERC
| Albany and Eastern Railroad Company | 47 |
AGR
| Alabama and Gulf Coast | 945 |
ALAB
| Alabama Railroad | 3 |
ALM
| Arkansas Louisiana and Mississippi Railr | 133 |
AM
| Arkansas & Missouri | 4 |
AN
| Apalachicola Northern | 43 |
AOK
| Arkansas-Oklahoma Railroad | 177 |
AR
| Aberdeen and Rockfish | 1 |
ASAB
| Bay Line Railroad LLC | 66 |
ATSF
| Atchison Topeka & Santa Fe | 3 |
ATW
| Atlantic and Western | 348 |
BAEX
| Andersons | 55 |
BAR
| Bangor & Aroostook | 13 |
BAYL
| Bay Line, LLC | 50 |
BKTY
| Union Pacific Railroad Company | 2720 |
BM
| Boston & Maine | 84 |
BMS
| Berlin Mills | 1 |
BN
| Burlington Northern | 3 |
BNSF
| BNSF Railway | 107 |
BTKY
| BTKY | 1 |
CAGY
| Columbus & Greenville Railway | 8 |
CAIX
| CAI Rail Inc. | 17 |
CAMY
| CAMP CHASE RAILWAY COMPANY, LLC | 12 |
CCR
| Corinth & Counce | 43 |
CFWR
| Caney Fork and Western Railroad | 16 |
CHTS
| Penn Eastern Rail Lines Incorporated | 4 |
CHTT
| Chicago Heights Terminal Transfer | 1 |
CIBX
| CIT Group/Capital Finance, Inc | 3 |
CIRR
| Chattahoochee Industrial Railroad | 264 |
CJPX
| General Electric Rail Services Corporation | 1 |
CLP
| Clarendon and Pittsford | 1 |
CLSX
| Cargill Incorporated Salt Division | 7 |
CMQ
| CENTRAL MAINE & QUEBEC RAILWAY | 7 |
CN
| Canadian National Railways | 17 |
CNA
| Canadian National Railways | 3 |
CNW
| Chicago & Northwestern | 297 |
COER
| Crab Orchard & Egyptian | 64 |
CP
| Canadian Pacific Railway | 160 |
CPAA
| Canadian Pacific Railway | 22 |
CR
| Conrail | 1 |
CRLE
| Coe Rail Incorporated | 5 |
CSX
| CSX Railroad | 445 |
CTRR
| Cloquet Terminal Railroad Company | 1 |
CV
| Central Vermont | 3 |
DMM
| Dansville and Mount Morris Railroad Comp | 2 |
DRGW
| Denver & Rio Grande Western | 2 |
EDC
| EDC | 1 |
EE
| Ellis and Eastern Company | 1 |
EEC
| East Erie Commercial Railroad | 2299 |
ELS
| Escanaba and Lake Superior Railroad Comp | 15 |
FCCM
| Compania de Ferrocarriles Chiapas Mayab | 10 |
FCRD
| First Coast Railway | 48 |
FGLK
| Finger Lakes Railway | 127 |
FRR
| Falls Road Railroad Company Incorporated | 14 |
FSR
| Fort Smith Railroad Company | 1 |
GFRR
| Georgia and Florida Railnet | 1 |
GMRC
| Green Mountain RR | 665 |
GNRR
| Georgia Northeastern | 22 |
GNWR
| Genesee and Wyoming Railroad Company | 5 |
GRN
| Greenville & Northern | 1 |
GTRA
| Golden Triangle Railroad | 160 |
GVSR
| Galveston Railroad L.P. | 10 |
HLMX
| Helm Financial Corporation | 40 |
HS
| H and S Railroad Company | 994 |
IANR
| Iowa Northern Ry | 39 |
IATR
| Iowa Traction Railroad Company | 2 |
IFRX
| Infinity Rail LLC | 1 |
ITFX
| INFINITY TRANSPORTATION III LLC | 6 |
KCS
| Kansas City Southern | 729 |
KCSM
| Kansas City Southern De Mexico | 8 |
KRR
| Kiamichi | 29 |
KYLE
| Kyle Railroad | 22 |
LBR
| Lowville and Beaver River Railroad Compa | 62 |
LRR
| Little River Railroad | 1 |
LRS
| Laurinburg and Southern | 761 |
LRWN
| Little Rock & Western | 14 |
LVRC
| Lamoille Valley | 11 |
LVRR
| Lycoming Valley | 2 |
MB
| Meridian & Bigbee | 44 |
MDR
| Kansas City Southern | 10 |
MDW
| Minnesota Dakota and Western Railway Com | 26 |
MEC
| Maine Central | 476 |
MMA
| Montreal, Maine & Atlantic | 308 |
MNNR
| Minnesota Commercial | 5 |
MP
| Missouri Pacific | 32 |
MQT
| Marquette Rail | 3 |
MRL
| Montana Rail Link | 120 |
MRS
| Manufacturers Railway | 1 |
MSDR
| Knoxville & Holston River Railroad | 116 |
MTNR
| Mississippi Tennessee Railroad LLC | 1 |
MWCX
| Midwest Railcar Corporation | 8 |
NADX
| General Electric Rail Services | 4 |
NECR
| New England Central | 4 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 46 |
NLG
| Kansas City Southern Railway Company (North Louisiana & Gulf) | 4 |
NOKL
| Northwestern Oklahoma | 73 |
NS
| Norfolk Southern | 431 |
NWR
| Nashville & Western Railroad Corp. | 4 |
PAL
| Paducah & Louisville | 12 |
PDRR
| Pee Dee River RR | 65 |
PHD
| Port Huron and Detroit Railroad Company | 1 |
PPU
| Tazewell & Peoria Railroad | 1 |
PRL
| Penn Eastern Rail Lines Incorporated | 10 |
QC
| Quebec Central | 4 |
RBMN
| Reading Blue Mountain & Northern | 1 |
RBOX
| Railbox Company | 1 |
RPMX
| RPMG INC | 2 |
SBD
| Seaboard System | 1 |
SGLR
| Seminole Gulf | 23 |
SIRX
| Southern Illinois Railcar Company | 42 |
SKRX
| Schuylkill Railcar L.P. | 1 |
SLC
| San Luis Central Railroad Company | 22 |
SLGG
| Progress Rail Services Corporation | 52 |
SLR
| St Lawrence & Atlantic | 40 |
SLSF
| Saint Louis-San Francisco | 1 |
SM
| St. Marys Railroad | 20 |
SMW
| St Marys Railway West LLC | 89 |
SNC
| Saratoga & North Creek Railway | 181 |
SOU
| Southern | 111 |
SP
| Southern Pacific | 85 |
SRN
| Sabine River & Northern | 624 |
SRY
| Southern Railway of British Columbia Lim | 1 |
SSAM
| Sault Ste. Marie Bridge Company (Canadia | 5 |
SSW
| St Louis Southwestern (Cotton Belt) | 12 |
TASD
| Terminal Alabama State Docks | 39 |
TKEN
| Tennken Railroad Company Incorporated | 17 |
TNR
| Kansas City Southern Railway Company | 1 |
TOE
| Texas Oklahoma and Eastern RR Company | 1 |
TR
| Tomahawk Railway L.P. | 6 |
TSRD
| Twin State Railroad Company | 11 |
UP
| Union Pacific Railroad Company | 4 |
VCY
| Galveston Railroad, L.P. | 1 |
VR
| Valdosta Railway | 117 |
WC
| Wisconsin Central | 157 |
WCCL
| Wisconsin Central | 63 |
WCOR
| Wellsboro and Corning Railroad Company | 5 |
WLO
| Waterloo Railway Company (Illinois Central) | 2 |
WREX
| Western Railroad Equipment Company | 10 |
WRWK
| Providence & Worchester Railroad | 275 |
WSOR
| Wisconsin & Southern | 1 |
YARR
| Youngstown and Austintown Railroad | 2 |
YB
| Youngstown Belt Railroad Company | 51 |
YKR
| York Rail | 7 |