ACWR
| Aberdeen, Carolina & Western | 1 |
AERC
| Albany and Eastern Railroad Company | 1 |
AMTK
| Amtrak | 58 |
AR
| Aberdeen and Rockfish | 3 |
ARR
| Alaska Railroad | 5 |
ATSF
| Atchison Topeka & Santa Fe | 12 |
BAP
| Butte Anaconda & Pacific | 1 |
BCOL
| Canadian National Railways | 2 |
BEN
| BEN | 4 |
BMLP
| BMLP | 1 |
BN
| Burlington Northern | 2 |
BNSF
| BNSF Railway | 16 |
BO
| Baltimore & Ohio | 3 |
CAE
| Chicago Aurora & Elgin | 1 |
CBQ
| Chicago Burlington & Quincy | 69 |
CGW
| Chicago Great Western | 2 |
CIM
| Chicago And Illinois Midland | 2 |
CN
| Canadian National Railways | 2 |
CNSM
| CHICAGO NORTH SHORE & MILWAUKEE RWY | 4 |
CNW
| Chicago & Northwestern | 12 |
CO
| Chesapeake & Ohio | 8 |
CORP
| Central Oregon & Pacific | 3 |
CP
| Canadian Pacific Railway | 2 |
CRIP
| Chicago Rock Island & Pacific | 15 |
CSS
| Chicago South Shore And South Bend | 5 |
CSX
| CSX Railroad | 8 |
CTA
| Chicago Transit Authority | 3 |
CWI
| Chicago and Western Indiana | 2 |
CWP
| Chicago West Pullman & Southern | 1 |
DCLR
| Delaware Coast Line RR Co | 2 |
DIR
| DIR | 1 |
DRGW
| Denver & Rio Grande Western | 1 |
DSNG
| Durango & Silverton Narrow Gauge Railroa | 1 |
DT
| Decatur Junction Railway Company | 1 |
DT1
| Detroit Terminal | 1 |
DUQU
| DUQU | 3 |
EBT
| East Broad Top | 10 |
EJE
| Elgin Joliet and Eastern | 6 |
EL
| Erie Lackawanna | 4 |
EMDX
| EMD | 1 |
ERIE
| Erie Railroad | 2 |
FWD
| Fort Worth & Denver | 1 |
GBW
| Green Bay & Western | 1 |
GLRX
| Georgetown Loop Railroad Incorporated | 1 |
GMO
| Gulf Mobile & Ohio | 4 |
GN
| Great Northern | 1 |
GWR
| Great Western Railway Company | 1 |
HRRC
| Housatonic Railroad Company | 1 |
IAIS
| Iowa Interstate | 1 |
IC
| Illinois Central | 6 |
IHB
| Indiana Harbor Belt | 1 |
KC
| KC | 4 |
KCS
| Kansas City Southern | 2 |
LCS
| LCS | 1 |
LIRR
| Long Island Railroad | 5 |
LVT
| LVT | 1 |
MBTA
| Massachusetts Bay Transit Authority | 15 |
MILW
| Milwaukee Road | 17 |
MNCR
| Metro North Commuter Railway | 4 |
MNS
| Minneapolis Northfield & Southern | 2 |
MWCR
| MWCR | 1 |
NH
| New Haven | 3 |
NJT
| New Jersey Transit | 6 |
NONE
| NONE | 3 |
NP
| Northern Pacific | 6 |
NS
| Norfolk Southern | 2 |
NSW
| Northwest Steel and Wire | 1 |
NW
| Norfolk & Western | 4 |
ODOT
| ODOT | 4 |
OERM
| OERM | 2 |
PAL
| Paducah & Louisville | 3 |
PC
| Penn Central | 2 |
PE
| Peoria & Eastern | 1 |
PHL
| Pacific Harbor Lines | 1 |
PRR
| Pennsylvania Railroad | 3 |
RDG
| Reading Railroad | 3 |
RFP
| Richmond Fredericksburg & Potomac | 33 |
RTD
| Regional Transportation District | 2 |
SCAX
| SOUTHERN CALIFORNIA REGIONAL RAIL AUTHORITY | 4 |
SDNX
| Coaster | 2 |
SEAS
| SEAS | 1 |
SFRT
| SFRT | 1 |
SHRT
| Shaker Heights Rapid Transit | 1 |
SLRG
| San Luis and Rio Grande Railroad | 3 |
SLSF
| Saint Louis-San Francisco | 1 |
SLUT
| South Lake Union Trolley | 1 |
SNDX
| Sound Transit | 1 |
SOO
| Soo Line | 2 |
SOU
| Southern | 7 |
SP
| Southern Pacific | 9 |
SPAX
| Southeastern Pennsylvania Transportation (SEPTA) | 5 |
SPEN
| SPEN | 1 |
TRIM
| TRIM | 2 |
TRRA
| Terminal RR of St Louis | 4 |
TSBY
| Great Lakes Central Railroad | 1 |
TTC
| Toronto Transit | 3 |
UP
| Union Pacific Railroad Company | 4 |
USA
| USA | 1 |
VIA
| Via Rail Canada | 1 |
WES
| WES | 1 |
WT
| Wrightsville & Tennille | 6 |
WWF
| WWF | 5 |