AN
| Apalachicola Northern | 3 |
AOK
| Arkansas-Oklahoma Railroad | 9 |
ASAB
| Bay Line Railroad LLC | 5 |
ATW
| Atlantic and Western | 4 |
BNSF
| BNSF Railway | 6 |
CIRR
| Chattahoochee Industrial Railroad | 5 |
CNW
| Chicago & Northwestern | 1 |
CP
| Canadian Pacific Railway | 1 |
CPAA
| Canadian Pacific Railway | 1 |
CSX
| CSX Railroad | 5 |
DRGW
| Denver & Rio Grande Western | 6 |
EEC
| East Erie Commercial Railroad | 39 |
GNRR
| Georgia Northeastern | 1 |
GTRA
| Golden Triangle Railroad | 8 |
HLMX
| Helm Financial Corporation | 1 |
HS
| H and S Railroad Company | 21 |
KCS
| Kansas City Southern | 10 |
KRR
| Kiamichi | 4 |
MDW
| Minnesota Dakota and Western Railway Com | 1 |
MRL
| Montana Rail Link | 1 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 1 |
NS
| Norfolk Southern | 5 |
SLC
| San Luis Central Railroad Company | 1 |
SP
| Southern Pacific | 2 |
SRN
| Sabine River & Northern | 40 |
TASD
| Terminal Alabama State Docks | 2 |
TKEN
| Tennken Railroad Company Incorporated | 1 |
WC
| Wisconsin Central | 2 |