CIRR
| Chattahoochee Industrial Railroad | 1 |
CMHX
| CarMath Incorporated | 1 |
CSX
| CSX Railroad | 4 |
EEC
| East Erie Commercial Railroad | 2 |
FGLK
| Finger Lakes Railway | 1 |
FSRR
| FerroSur | 1 |
FXE
| Ferromex | 1 |
GNRR
| Georgia Northeastern | 1 |
GNWR
| Genesee and Wyoming Railroad Company | 1 |
IANR
| Iowa Northern Ry | 1 |
IBT
| International Bridge and Terminal Company | 1 |
IC
| Illinois Central | 1 |
NS
| Norfolk Southern | 2 |
RBOX
| Railbox Company | 6 |
SP
| Southern Pacific | 2 |
UP
| Union Pacific Railroad Company | 2 |