AERC
| Albany and Eastern Railroad Company | 1 |
AGR
| Alabama and Gulf Coast | 2 |
ALM
| Arkansas Louisiana and Mississippi Railr | 3 |
AOK
| Arkansas-Oklahoma Railroad | 5 |
ASAB
| Bay Line Railroad LLC | 5 |
ATW
| Atlantic and Western | 2 |
BAYL
| Bay Line, LLC | 1 |
BKTY
| Union Pacific Railroad Company | 63 |
BM
| Boston & Maine | 2 |
BNSF
| BNSF Railway | 4 |
CAIX
| CAI Rail Inc. | 1 |
CCR
| Corinth & Counce | 2 |
CHTS
| Penn Eastern Rail Lines Incorporated | 7 |
CN
| Canadian National Railways | 1 |
CNW
| Chicago & Northwestern | 5 |
COER
| Crab Orchard & Egyptian | 1 |
CP
| Canadian Pacific Railway | 2 |
CSX
| CSX Railroad | 6 |
EEC
| East Erie Commercial Railroad | 34 |
FGLK
| Finger Lakes Railway | 3 |
GMRC
| Green Mountain RR | 7 |
GTRA
| Golden Triangle Railroad | 3 |
HS
| H and S Railroad Company | 6 |
KCS
| Kansas City Southern | 11 |
LBR
| Lowville and Beaver River Railroad Compa | 6 |
LRS
| Laurinburg and Southern | 13 |
MB
| Meridian & Bigbee | 2 |
MDW
| Minnesota Dakota and Western Railway Com | 1 |
MEC
| Maine Central | 14 |
MMA
| Montreal, Maine & Atlantic | 10 |
MRL
| Montana Rail Link | 6 |
MSDR
| Knoxville & Holston River Railroad | 6 |
NOKL
| Northwestern Oklahoma | 1 |
NS
| Norfolk Southern | 17 |
PRL
| Penn Eastern Rail Lines Incorporated | 13 |
SBD
| Seaboard System | 1 |
SLC
| San Luis Central Railroad Company | 1 |
SM
| St. Marys Railroad | 2 |
SMW
| St Marys Railway West LLC | 1 |
SOU
| Southern | 1 |
SP
| Southern Pacific | 3 |
SRN
| Sabine River & Northern | 8 |
SRY
| Southern Railway of British Columbia Lim | 1 |
SSAM
| Sault Ste. Marie Bridge Company (Canadia | 1 |
VR
| Valdosta Railway | 4 |
WC
| Wisconsin Central | 6 |
WCCL
| Wisconsin Central | 2 |
WRWK
| Providence & Worchester Railroad | 1 |
YB
| Youngstown Belt Railroad Company | 1 |