AMTK
| Amtrak | 2 |
BNSF
| BNSF Railway | 1 |
BR
| Buffalo and Pittsburgh | 1 |
CP
| Canadian Pacific Railway | 1 |
CR
| Conrail | 6 |
CS
| Colorado & Southern | 1 |
CSX
| CSX Railroad | 3 |
LRS
| Laurinburg and Southern | 1 |
NJTR
| NJ Transit Rail Operations | 1 |
NS
| Norfolk Southern | 2 |
NW
| Norfolk & Western | 2 |
RTC
| RTC | 1 |
SP
| Southern Pacific | 1 |
TBM
| TBM | 1 |
TVRR
| Tulare Valley Railroad Company | 1 |