GNWR
| Genesee and Wyoming Railroad Company | 1 |
IATR
| Iowa Traction Railroad Company | 4 |
NADX
| General Electric Rail Services | 1 |
NOKL
| Northwestern Oklahoma | 3 |
NS
| Norfolk Southern | 3 |
SMW
| St Marys Railway West LLC | 1 |
SP
| Southern Pacific | 1 |
TASD
| Terminal Alabama State Docks | 2 |