AGR
| Alabama and Gulf Coast | 18 |
ALM
| Arkansas Louisiana and Mississippi Railr | 10 |
ASAB
| Bay Line Railroad LLC | 3 |
ATW
| Atlantic and Western | 20 |
BKTY
| Union Pacific Railroad Company | 9 |
CIRR
| Chattahoochee Industrial Railroad | 9 |
EEC
| East Erie Commercial Railroad | 32 |
FCRD
| First Coast Railway | 1 |
FSRR
| FerroSur | 1 |
HS
| H and S Railroad Company | 5 |
LRWN
| Little Rock & Western | 9 |
MMA
| Montreal, Maine & Atlantic | 1 |
NADX
| General Electric Rail Services | 6 |
SLR
| St Lawrence & Atlantic | 7 |
SRN
| Sabine River & Northern | 2 |
TASD
| Terminal Alabama State Docks | 8 |
TR
| Tomahawk Railway L.P. | 1 |
WREX
| Western Railroad Equipment Company | 1 |