AGR
| Alabama and Gulf Coast | 8 |
ALM
| Arkansas Louisiana and Mississippi Railr | 1 |
AOK
| Arkansas-Oklahoma Railroad | 1 |
BKTY
| Union Pacific Railroad Company | 15 |
BM
| Boston & Maine | 2 |
CIRR
| Chattahoochee Industrial Railroad | 2 |
CNW
| Chicago & Northwestern | 2 |
CSX
| CSX Railroad | 17 |
EEC
| East Erie Commercial Railroad | 15 |
FCRD
| First Coast Railway | 2 |
GMRC
| Green Mountain RR | 6 |
GTRA
| Golden Triangle Railroad | 1 |
HLMX
| Helm Financial Corporation | 2 |
HS
| H and S Railroad Company | 15 |
IANR
| Iowa Northern Ry | 1 |
KCS
| Kansas City Southern | 1 |
KYLE
| Kyle Railroad | 1 |
LBR
| Lowville and Beaver River Railroad Compa | 2 |
MEC
| Maine Central | 4 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 3 |
NS
| Norfolk Southern | 1 |
PAL
| Paducah & Louisville | 1 |
PDRR
| Pee Dee River RR | 5 |
SIRX
| Southern Illinois Railcar Company | 2 |
SMW
| St Marys Railway West LLC | 1 |
WC
| Wisconsin Central | 1 |