AOK
| Arkansas-Oklahoma Railroad | 1 |
BNSF
| BNSF Railway | 8 |
BTCX
| Browner Turnout Company | 26 |
CANX
| CANAC International | 2 |
CN
| Canadian National Railways | 102 |
CNA
| Canadian National Railways | 6 |
CP
| Canadian Pacific Railway | 55 |
CSX
| CSX Railroad | 2 |
DJTX
| Joseph Transportation Incorporated | 1 |
DODX
| Department Of Defense | 128 |
FTTX
| TTX Company | 114 |
GBRX
| Greenbrier Leasing Corporation | 1 |
ITTX
| TTX Company | 31 |
JTTX
| TTX Company | 35 |
LMIC
| Lake Michigan & Indiana Railroad | 35 |
MP
| Missouri Pacific | 1 |
NTKX
| VAE Nortrak North America Incorporated | 3 |
PTTX
| TTX Company | 17 |
QUAX
| Redstreak, LLC | 4 |
RCFX
| Railroad Construction Company | 1 |
SP
| Southern Pacific | 2 |
TTDX
| TTX Company - DOD Service Flats | 4 |
TTXX
| TTX Company | 11 |
UMP
| Upper Merion and Plymouth Railroad | 2 |