AMTK
| Amtrak | 19 |
BDRV
| Belvidere & Delaware Railroad | 2 |
CNW
| Chicago & Northwestern | 1 |
CO
| Chesapeake & Ohio | 4 |
CSX
| CSX Railroad | 8 |
EL
| Erie Lackawanna | 10 |
HZGX
| Herzog Contracting Corporation | 32 |
JPMX
| JERSEY RAILWAY EQUIPMENT CO., LLC | 5 |
LN
| Louisville & Nashville | 3 |
NS
| Norfolk Southern | 39 |
NW
| Norfolk & Western | 3 |
SBD
| Seaboard System | 2 |
SOU
| Southern | 4 |
UP
| Union Pacific Railroad Company | 1 |