ATW
| Atlantic and Western | 2 |
BNSF
| BNSF Railway | 3 |
CAGY
| Columbus & Greenville Railway | 3 |
CN
| Canadian National Railways | 6 |
CR
| Conrail | 1 |
CSX
| CSX Railroad | 2 |
CXST
| CXST | 1 |
FXE
| Ferromex | 5 |
GTW
| Grand Trunk Western | 14 |
NDYX
| First Union Rail | 2 |
NKLX
| NKLX | 6 |
NS
| Norfolk Southern | 45 |
SMW
| St Marys Railway West LLC | 10 |
WRWK
| Providence & Worchester Railroad | 12 |