AGR
| Alabama and Gulf Coast | 13 |
ANR
| Angelina and Neches River Railroad | 1 |
AOK
| Arkansas-Oklahoma Railroad | 3 |
ASAB
| Bay Line Railroad LLC | 3 |
ATW
| Atlantic and Western | 11 |
BAYL
| Bay Line, LLC | 3 |
BNSF
| BNSF Railway | 1 |
CIRR
| Chattahoochee Industrial Railroad | 3 |
CN
| Canadian National Railways | 1 |
CNIS
| Canadian National Railways | 2 |
CNW
| Chicago & Northwestern | 3 |
COER
| Crab Orchard & Egyptian | 3 |
CSX
| CSX Railroad | 18 |
DWC
| Canadian National Railways | 3 |
EEC
| East Erie Commercial Railroad | 8 |
FBOX
| TTX Company | 4 |
FCRD
| First Coast Railway | 1 |
FSRR
| FerroSur | 4 |
FXE
| Ferromex | 1 |
GMRC
| Green Mountain RR | 2 |
HS
| H and S Railroad Company | 9 |
IBT
| International Bridge and Terminal Company | 2 |
IC
| Illinois Central | 1 |
KCS
| Kansas City Southern | 7 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 2 |
NOKL
| Northwestern Oklahoma | 3 |
NS
| Norfolk Southern | 8 |
RBOX
| Railbox Company | 9 |
SMW
| St Marys Railway West LLC | 2 |
SOU
| Southern | 2 |
SP
| Southern Pacific | 3 |
SSW
| St Louis Southwestern (Cotton Belt) | 2 |
TBOX
| TTX Company | 6 |
TOFX
| TTX Company - Box Cars | 1 |
TR
| Tomahawk Railway L.P. | 2 |
WE
| Wheeling & Lake Erie | 1 |