ATSF
| Atchison Topeka & Santa Fe | 7 |
BN
| Burlington Northern | 36 |
BNSF
| BNSF Railway | 35 |
CNW
| Chicago & Northwestern | 16 |
DRGW
| Denver & Rio Grande Western | 1 |
FURX
| First Union Rail | 2 |
GCRY
| Grand Canyon Railway | 4 |
GREX
| Georgetown Rail Equipment Company | 5 |
HZGX
| Herzog Contracting Corporation | 13 |
JBWX
| JBWX | 1 |
MKT
| Missouri-Kansas-Texas | 1 |
RRLX
| Rail Logistics, LC | 1 |
SI
| Union Pacific Railroad Company (Spokane International) | 59 |
SP
| Southern Pacific | 3 |
UP
| Union Pacific Railroad Company | 40 |