ABOX
| TTX Company | 2 |
BCOL
| Canadian National Railways | 1 |
BITY
| Penn Eastern Rail Lines Incorporated | 1 |
BM
| Boston & Maine | 1 |
CNW
| Chicago & Northwestern | 1 |
CUOH
| Columbus and Ohio River Railroad Company | 1 |
EEC
| East Erie Commercial Railroad | 1 |
FBOX
| TTX Company | 1 |
FSRR
| FerroSur | 5 |
GTRA
| Golden Triangle Railroad | 1 |
IBT
| International Bridge and Terminal Company | 2 |
IFRX
| Infinity Rail LLC | 7 |
LNAC
| Chattahoochee Bay Railroad, LLC | 2 |
LVRC
| Lamoille Valley | 1 |
MEC
| Maine Central | 4 |
MQT
| Marquette Rail | 1 |
NYC
| New York Central | 1 |
PAL
| Paducah & Louisville | 1 |
QGRY
| Quebec Gatineau Railway Incorporated | 1 |
RBOX
| Railbox Company | 2 |
TBOX
| TTX Company | 4 |
WCCL
| Wisconsin Central | 1 |