A
| A | 3 |
ATEX
| Asplundh Tree Expert Co Railroad Division | 4 |
BNSF
| BNSF Railway | 1 |
BR
| Buffalo and Pittsburgh | 4 |
CR
| Conrail | 6 |
CSX
| CSX Railroad | 14 |
HZGX
| Herzog Contracting Corporation | 3 |
J
| J | 2 |
LMIX
| Loram Maintenance of Way Inc. | 8 |
ME
| Morristown & Erie Railroad | 12 |
NJT
| New Jersey Transit | 4 |
NJTR
| NJ Transit Rail Operations | 93 |
NS
| Norfolk Southern | 8 |
NW
| Norfolk & Western | 3 |
RDG
| Reading Railroad | 3 |
RG
| RG | 15 |
SLRS
| SMS Rail Service Incorporated | 1 |
SP
| Southern Pacific | 1 |
SRS
| Sperry Rail Service | 10 |