AGR
| Alabama and Gulf Coast | 1 |
ATW
| Atlantic and Western | 1 |
CSX
| CSX Railroad | 1 |
EEC
| East Erie Commercial Railroad | 2 |
GMRC
| Green Mountain RR | 2 |
HS
| H and S Railroad Company | 1 |
MRL
| Montana Rail Link | 3 |
SRN
| Sabine River & Northern | 6 |
TKEN
| Tennken Railroad Company Incorporated | 1 |