AGR
| Alabama and Gulf Coast | 6 |
AN
| Apalachicola Northern | 1 |
AOK
| Arkansas-Oklahoma Railroad | 2 |
BAYL
| Bay Line, LLC | 1 |
BKTY
| Union Pacific Railroad Company | 3 |
COER
| Crab Orchard & Egyptian | 1 |
EEC
| East Erie Commercial Railroad | 7 |
GMRC
| Green Mountain RR | 1 |
GTRA
| Golden Triangle Railroad | 1 |
HS
| H and S Railroad Company | 3 |
KCS
| Kansas City Southern | 3 |
LVRC
| Lamoille Valley | 1 |
NS
| Norfolk Southern | 4 |
SRN
| Sabine River & Northern | 1 |