ABOX
| TTX Company | 1 |
BNSF
| BNSF Railway | 2 |
CIRR
| Chattahoochee Industrial Railroad | 1 |
COER
| Crab Orchard & Egyptian | 1 |
CP
| Canadian Pacific Railway | 1 |
CPAA
| Canadian Pacific Railway | 1 |
CR
| Conrail | 3 |
CSX
| CSX Railroad | 3 |
GNWR
| Genesee and Wyoming Railroad Company | 1 |
HS
| H and S Railroad Company | 1 |
IBT
| International Bridge and Terminal Company | 1 |
NS
| Norfolk Southern | 5 |
RBOX
| Railbox Company | 1 |
SOU
| Southern | 4 |
TFM
| Kansas City Southern De Mexico | 1 |
UP
| Union Pacific Railroad Company | 4 |
WRWK
| Providence & Worchester Railroad | 2 |