AGR
| Alabama and Gulf Coast | 15 |
ATW
| Atlantic and Western | 7 |
BAEX
| Andersons | 6 |
BKTY
| Union Pacific Railroad Company | 22 |
CAGY
| Columbus & Greenville Railway | 2 |
CN
| Canadian National Railways | 4 |
CP
| Canadian Pacific Railway | 2 |
CSX
| CSX Railroad | 11 |
EEC
| East Erie Commercial Railroad | 8 |
GMRC
| Green Mountain RR | 3 |
GNRR
| Georgia Northeastern | 3 |
GTRA
| Golden Triangle Railroad | 3 |
HS
| H and S Railroad Company | 9 |
KCS
| Kansas City Southern | 3 |
LBR
| Lowville and Beaver River Railroad Compa | 1 |
LRS
| Laurinburg and Southern | 181 |
MEC
| Maine Central | 20 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 1 |
NOKL
| Northwestern Oklahoma | 3 |
SNC
| Saratoga & North Creek Railway | 8 |
SRN
| Sabine River & Northern | 1 |
WC
| Wisconsin Central | 1 |
WRWK
| Providence & Worchester Railroad | 50 |