ABOX
| TTX Company | 1 |
ALY
| Allegheny and Eastern Railroad Incorpora | 1 |
AOK
| Arkansas-Oklahoma Railroad | 4 |
ATW
| Atlantic and Western | 3 |
BAYL
| Bay Line, LLC | 1 |
BKTY
| Union Pacific Railroad Company | 14 |
BNSF
| BNSF Railway | 4 |
CIC
| Cedar Rapids & Iowa City | 32 |
CN
| Canadian National Railways | 3 |
CNA
| Canadian National Railways | 6 |
CNIS
| Canadian National Railways | 2 |
COER
| Crab Orchard & Egyptian | 4 |
CP
| Canadian Pacific Railway | 1 |
CRLE
| Coe Rail Incorporated | 2 |
CSX
| CSX Railroad | 1 |
DWC
| Canadian National Railways | 2 |
FBOX
| TTX Company | 8 |
GTW
| Grand Trunk Western | 1 |
IBT
| International Bridge and Terminal Company | 1 |
IC
| Illinois Central | 1 |
KCS
| Kansas City Southern | 2 |
LRS
| Laurinburg and Southern | 18 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 1 |
RBOX
| Railbox Company | 7 |
SNC
| Saratoga & North Creek Railway | 4 |
SOU
| Southern | 1 |
SP
| Southern Pacific | 1 |
SRN
| Sabine River & Northern | 1 |
TBOX
| TTX Company | 4 |
TOE
| Texas Oklahoma and Eastern RR Company | 1 |
UCRY
| Utah Central | 7 |
WC
| Wisconsin Central | 3 |