BN
| Burlington Northern | 2 |
BNSF
| BNSF Railway | 2 |
JPBX
| Joint Powers Board (CalTrain) | 1 |
MNRR
| Modoc Northern Railroad Company | 1 |
MP
| Missouri Pacific | 1 |
SPMW
| Southern Pacific Maintenance of Way | 12 |
UP
| Union Pacific Railroad Company | 6 |
UPP
| Union Pacific Passenger | 4 |