ABS
| Alabama Southern Railroad | 4 |
AOK
| Arkansas-Oklahoma Railroad | 3 |
BN
| Burlington Northern | 26 |
BNSF
| BNSF Railway | 161 |
CNIS
| Canadian National Railways | 6 |
CP
| Canadian Pacific Railway | 3 |
CW
| Colorado and Wyoming | 32 |
GNWR
| Genesee and Wyoming Railroad Company | 24 |
IFRX
| Infinity Rail LLC | 2 |
ITLX
| General Electric Rail Services | 3 |
JTSX
| Joseph Transportation Incorporated | 2 |
KCS
| Kansas City Southern | 1 |
LW
| Louisville and Wadley Railway Company | 2 |
MP
| Missouri Pacific | 3 |
MTTX
| TTX Company | 3 |
MVKX
| Tubular Transport Services | 20 |
NOKL
| Northwestern Oklahoma | 7 |
NS
| Norfolk Southern | 1 |
OTWX
| Of The Woods LLC | 1 |
PEYX
| Transportation Technology Services Inc | 3 |
SOU
| Southern | 4 |
SP
| Southern Pacific | 9 |
SSW
| St Louis Southwestern (Cotton Belt) | 5 |
TRLX
| Texas Railcar Leasing Company | 1 |
TTJX
| TTX Company-Bulkhead Flats | 7 |
TTPX
| TTX Company - Bulkhead Flats | 320 |
UP
| Union Pacific Railroad Company | 10 |
YARR
| Youngstown and Austintown Railroad | 1 |