AGR
| Alabama and Gulf Coast | 2 |
ASAB
| Bay Line Railroad LLC | 1 |
ATSF
| Atchison Topeka & Santa Fe | 4 |
BAEX
| Andersons | 7 |
BNSF
| BNSF Railway | 126 |
CIRR
| Chattahoochee Industrial Railroad | 16 |
CMHX
| CarMath Incorporated | 14 |
CNA
| Canadian National Railways | 1 |
CPAA
| Canadian Pacific Railway | 3 |
CR
| Conrail | 2 |
CSX
| CSX Railroad | 20 |
GMSR
| Kansas City Southern | 3 |
IC
| Illinois Central | 9 |
KCS
| Kansas City Southern | 3 |
MMRR
| Mid-Michigan Railroad Incorporated | 6 |
MP
| Missouri Pacific | 4 |
MSRC
| Kansas City Southern | 1 |
NADX
| General Electric Rail Services | 1 |
NS
| Norfolk Southern | 20 |
NW
| Norfolk & Western | 1 |
PSMX
| Esco Corporation | 1 |
SOU
| Southern | 3 |
SSW
| St Louis Southwestern (Cotton Belt) | 5 |
UP
| Union Pacific Railroad Company | 4 |
VCY
| Galveston Railroad, L.P. | 2 |
WP
| Western Pacific | 1 |