AGR
| Alabama and Gulf Coast | 3 |
ALM
| Arkansas Louisiana and Mississippi Railr | 4 |
AM
| Arkansas & Missouri | 1 |
ATW
| Atlantic and Western | 1 |
BAYL
| Bay Line, LLC | 1 |
BKTY
| Union Pacific Railroad Company | 36 |
BNSF
| BNSF Railway | 1 |
CNW
| Chicago & Northwestern | 1 |
CSX
| CSX Railroad | 2 |
EEC
| East Erie Commercial Railroad | 1 |
FCRD
| First Coast Railway | 1 |
GMRC
| Green Mountain RR | 1 |
GTRA
| Golden Triangle Railroad | 1 |
HS
| H and S Railroad Company | 13 |
KCS
| Kansas City Southern | 1 |
LRS
| Laurinburg and Southern | 2 |
MP
| Missouri Pacific | 1 |
NS
| Norfolk Southern | 3 |
SRN
| Sabine River & Northern | 8 |
WRWK
| Providence & Worchester Railroad | 4 |