ATSF
| Atchison Topeka & Santa Fe | 81 |
BN
| Burlington Northern | 22 |
BNSF
| BNSF Railway | 1 |
CBQ
| Chicago Burlington & Quincy | 1 |
CNW
| Chicago & Northwestern | 3 |
CR
| Conrail | 1 |
CRIP
| Chicago Rock Island & Pacific | 1 |
CRRX
| Canon City and Royal Gorge Railroad LLC | 1 |
DRGW
| Denver & Rio Grande Western | 29 |
FNM
| Ferrocarriles Nacionales de Mexico | 1 |
FXE
| Ferromex | 3 |
ICG
| Illinois Central Gulf | 1 |
KCCX
| Kennecott Utah Copper Corporation | 1 |
KMC
| KMC | 1 |
KSCX
| KAPSTONE CHARLESTON KRAFT, LLC | 1 |
MP
| Missouri Pacific | 4 |
NdeM
| NDEM | 1 |
NN
| Northern Nevada Railroad Corporation | 2 |
NWP
| Northwestern Pacific Railroad Company | 1 |
SOO
| Soo Line | 1 |
SP
| Southern Pacific | 57 |
UP
| Union Pacific Railroad Company | 17 |
UPP
| Union Pacific Passenger | 2 |
WP
| Western Pacific | 5 |