AMTK
| Amtrak | 6 |
CR
| Conrail | 20 |
CSX
| CSX Railroad | 1 |
EV
| Everett Railroad | 2 |
GREX
| Georgetown Rail Equipment Company | 10 |
HZGX
| Herzog Contracting Corporation | 61 |
NJT
| New Jersey Transit | 3 |
NS
| Norfolk Southern | 35 |
NYSW
| New York Susquehanna & Western | 1 |
SI
| Union Pacific Railroad Company (Spokane International) | 1 |