AMTK
| Amtrak | 23 |
BDRV
| Belvidere & Delaware Railroad | 1 |
CO
| Chesapeake & Ohio | 5 |
CP
| Canadian Pacific Railway | 2 |
CR
| Conrail | 6 |
CSX
| CSX Railroad | 51 |
CTLL
| CTLL | 1 |
DB
| Deutsche Bahn | 1 |
HZGX
| Herzog Contracting Corporation | 35 |
MEC
| Maine Central | 1 |
NHRR
| New Hope and Ivyland Rail Road | 4 |
NJT
| New Jersey Transit | 1 |
NYSW
| New York Susquehanna & Western | 2 |
PKP
| Polish Railways | 1 |
UP
| Union Pacific Railroad Company | 1 |