BN
| Burlington Northern | 2 |
BNSF
| BNSF Railway | 4 |
CNW
| Chicago & Northwestern | 4 |
DRGW
| Denver & Rio Grande Western | 2 |
GNBC
| Grainbelt Corporation | 10 |
HATX
| Helm Financial Corporation | 2 |
HZGX
| Herzog Contracting Corporation | 14 |
KCS
| Kansas City Southern | 3 |
NCRC
| Nebraska Central | 1 |
RVSC
| Rio Valley Switching Company | 38 |
SI
| Union Pacific Railroad Company (Spokane International) | 4 |
SP
| Southern Pacific | 1 |
SPMW
| Southern Pacific Maintenance of Way | 1 |
SR
| Kansas City Southern | 2 |
TFM
| Kansas City Southern De Mexico | 1 |
TM
| Texas-Mexican | 3 |
UP
| Union Pacific Railroad Company | 15 |
WP
| Western Pacific | 6 |