ATX
| ATX | 1 |
BM
| Boston & Maine | 3 |
BNQ
| Burlington Northern and Santa Fe Railway | 78 |
BNSF
| BNSF Railway | 12 |
CN
| Canadian National Railways | 1 |
CNQ
| Canadian National Railway | 6 |
CPT
| Canadian Pacific Railway | 26 |
CR
| Conrail | 1 |
CSX
| CSX Railroad | 18 |
CSXE
| CSX Transportation Incorporated | 57 |
CV
| Central Vermont | 1 |
DL
| Delaware-Lackawanna Railroad Company | 1 |
ESNA
| Eureka Springs and North Arkansas | 1 |
FEC
| Florida East Coast | 1 |
FSRR
| FerroSur | 2 |
FXE
| Ferromex | 8 |
GATX
| General American Marks Company | 1 |
IC
| Illinois Central | 2 |
KCS
| Kansas City Southern | 2 |
NHN
| New Hampshire Northcoast Corporation | 1 |
NS
| Norfolk Southern | 463 |
PW
| Providence and Worcester | 6 |
SPQ
| Union Pacific Railroad Company | 1 |
ST
| Springfield Terminal | 5 |
UP
| Union Pacific Railroad Company | 2 |
UPRQ
| Union Pacific Railroad Company | 22 |