Operators
- Chicago Transit Authority1347
- Union Pacific527
- Soo Line287
- Chicago and North Western232
- Metra220
- Canadian Pacific197
- Chicago Surface Lines160
- Pace137
- Amtrak111
- CSX Transportation103
- Indiana Harbor Belt95
- CP Rail System78
- Conrail57
- Canadian National55
- Illinois Central55
- Chicago North Shore and Milwaukee52
- Chicago South Shore and South Bend Railroad48
- Norfolk Southern48
- Southern Pacific42
- Burlington Northern41
- Wisconsin and Southern Railroad39
- Chicago Motor Coach Company33
- Wisconsin Central30
- Atchison, Topeka and Santa Fe Railway23
- Greyhound Lines21
- Chicago Rapid Transit Company20
- Los Angeles Metropolitan Transit Authority20
- Milwaukee Road20
- Fort Worth Transportation Authority18
- BNSF Railway17
- Pacific Electric Railway17
- GATX15
- Regional Transportation Authority14
- Chicago Aurora and Elgin13
- HLCX13
- Kankakee, Beaverville and Southern Railroad13
- Southeastern Pennsylvania Transportation Authority13
- Chicago Burlington and Quincy12
- Grand Trunk Western11
- New York Central11
- San Francisco Municipal Railway11
- Toronto Transit Commission11
- TTX11
- ACF Industries10
- Los Angeles County Metropolitan Transportation Authority10
- Milwaukee County Transit System9
- Southern Railway9
- Chicago Rock Island and Pacific8
- Denver and Rio Grande Western Railroad8
- Long Beach Transit8
- Southern California Rapid Transit District8
- Gemeentevervoerbedrijf Amsterdam7
- Los Angeles Transit Lines7
- MTA New York City Bus7
- Duluth Winnipeg and Pacific6
- GM6
- Indiana Harbor Belt Railroad6
- Marquette County Transit Authority6
- Metro6
- Metropolitan Transportation Authority6
- RTD6
- CEFX5
- Dakota Southern Railway5
- I&M Rail Link5
- Kenosha Transit5
- Nickel Plate Road5
- Norfolk and Western5
- OC Transpo5
- Sperry Rail Service5
- Transit Systems5
- Wisconsin and Calumet Railroad5
- Algoma Central4
- Champaign-Urbana Mass Transit District4
- Cotton Belt4
- East Troy Railroad4
- HATX4
- London Transport4
- Morrison Knudsen4
- MTTX4
- Penn Central4
- Rail Link4
- St. Louis and Hannibal Railroad4
- Western Pacific4
- ADM3
- AGPX3
- Azienda Tramvie E Autobus Del Comune Di Roma3
- Belt Railway of Chicago3
- Bluewater3
- Chicago Police3
- Chicago Short Line Railway3
- Dallas Area Rapid Transit3
- Electro-Motive Leasing3
- GECX3
- Gray Line3
- Gulf, Mobile and Ohio Railroad3
- London Transit Commission3
- Mississauga Transit3
- Missouri Pacific3
- NJ Transit3
- Oklahoma Spirit3
- PROCOR3
- RMGX3
- Santa Monica Municipal Bus Lines3
- Société De Transport De La Communauté Urbaine De Montréal3
- St. Louis-San Francisco Railway3
- ADMX2
- AMCX2
- American Express2
- Ann Arbor Area Transportation Authority2
- APRX2
- Burlington Lines2
- C.S.P.2
- Chicago Fire Department2
- Chicago Trolley2
- Clark County Area Transit2
- Continental Air Transport2
- Continental Trailways2
- Cook County Sheriff2
- Cowtown Bus Charters2
- CRLE2
- Drewry's2
- Elgin Joliet and Eastern2
- EMP2
- FWRH2
- Great Northern2
- Hammond Yellow Coach Lines2
- HLGX2
- HLMX2
- İETT2
- Illinois Central Coach Company2
- Illinois Central Gulf2
- IndyGo2
- JTPX2
- Keeshin2
- Kingston Transit2
- LLPX2
- LRCX2
- Madison Metro2
- MARTA2
- Massachusetts Bay Transportation Authority2
- Metrobus2
- NAHX2
- New York City Transit Authority2
- Northern Indiana Commuter Transportation District2
- Old Town Trolley2
- Pennsylvania Railroad2
- PRGX2
- RailTY2
- Rio Grande2
- Santa Fe Southern2
- Seaboard System2
- Sydney Buses2
- The Bloomer Line2
- The Bus2
- Trailways2
- Verkehrsbetriebe Zürich2
- VIA Rail Canada2
- Wabash2
- ACI1
- ADBF1
- Akron, Canton and Youngstown Railroad1
- Alltown1
- ALTRAN1
- AM General1
- American1
- American Airlines1
- American Bridge Company1
- American President Lines1
- Arriva1
- Art Miller Tours1
- Athens Electric Railway1
- AUTO PORT1
- Baltimore and Ohio1
- Bangor and Aroostook1
- BCIT1
- Bend Railroad1
- Beverly Hills Bus Lines1
- BGW1
- BİNİLİR1
- Bloomer1
- Bloomer Line1
- Blue Ribbon Coach Chicago1
- Broward County Transit1
- Buckeye Trail1
- Bunge Corporation1
- Burlington Northern Santa Fe Railway1
- BW701
- C-SPAN1
- C.F.L.X.1
- CAT1
- CCBX1
- Central Kansas Railway1
- Central U.P. Regional Transportation1
- CGLX1
- CGTX1
- Chicago and West Michigan Railway1
- Chicago Coach Company1
- Chicago Department of Transportation1
- Chicago Eastern Illinois Railway1
- Chicago Great Western1
- Chicago Motor Bus Company1
- Chicago Terminal Railroad1
- Chicago United Traction Co.1
- CHTT1
- Citizens Area Transit1
- City Tram Circle1
- CITYBUS 城巴1
- Cla1
- Clark County School District1
- CNWX1
- ComEd1
- Continental Golden Charter1
- Corn Sweeteners1
- CSTX1
- Culver CityBus1
- D&M&E1
- D&R1
- Dale's Charter Service1
- Dallas Transit System1
- DC1
- Des Moines Area Regional Transit Authority1
- Des Moines Bus Company1
- Disney Transport1
- DK E1
- Double Deck Tours Limited1
- DTTX1
- Dumbarton Express1
- E&M1
- EDM Electric Motive1
- Egged1
- Electro-Motive1
- ERLX1
- ESWE1
- FIC1
- Foothill Transit1
- FPCX1
- FWRR1
- GMR1
- Hammerhead Leasing Corporation1
- Harbor Belt Railroad1
- HI1
- HLCK1
- Hop In1
- Illinois Central Railroad1
- Illinois Terminal Railroad1
- IMS1
- Indian Harbor Belt1
- Indian Harbor Belt Railroad1
- Indiana Rail Road1
- Indianapolis Transit System1
- Indianapolis Yellow Coach Lines1
- IPLX1
- Janesville and Southeastern1
- K.C. Express1
- Kansas City Southern1
- KCBX Terminals1
- L'Charter1
- Lake Superior and Ishpeming1
- Lakefront Lines1
- Lemay1
- LMX1
- Locomotive Leasing Partners1
- Long Island Rail Road1
- Los Angeles Department of Transportation1
- Los Angeles International Airport1
- Louisville and Nashville1
- LRWN1
- M I1
- M St E1
- M&S STI1
- Manistique Papers Inc1
- Manufacturers Railway Co.1
- Marquette Transit Co.1
- MAX1
- Metro Transit1
- Metrolink1
- Metropolitan Transit Authority1
- Mid-America1
- Milwaukee1
- Milwaukee Coach Corp1
- Minneapolis and St. Louis Railway1
- Miracle Revival Center1
- MNS1
- Model Cities Bus1
- MS1
- MS E1
- MSTL1
- MTV1
- MWM1
- National Railway Equipment1
- NATX1
- Nederlandse Spoorwegen1
- New York, New Haven and Hartford Railroad1
- NICO1
- NKCR1
- NM1
- NOKL1
- North Southern1
- Northeastern Illinois U-Bus1
- NPEX1
- NREX1
- O.S.L.1
- OCK1
- ON1
- OP1
- Orange Belt Stages1
- Orion1
- P.S.C.I.1
- Pace South Division1
- Panhandle Trailways1
- Peoria Charter Coach Company1
- Peoria City Lines1
- Phoenix Transit1
- Pirate's Cove1
- PLCX1
- Precision1
- PrimeCo1
- Principe Ejecutivo1
- ProRail1
- Providence and Worcester Railroad1
- Pullman1
- Rail System1
- Railbox1
- Reading Railroad1
- Regional Transportation District1
- Reimbrock1
- RF AZ1
- Ridgefield Park Railroad1
- RN1
- Roaring Fork Transportation Authority1
- Roberts Hawaii1
- RP1
- Rumbo1
- San Juan1
- San Juan Ciudad Capital1
- Scenic Hawkeye Stages1
- SCR1
- Smokie Shop Rapid Transit1
- SO1
- Société De Transport De Montréal1
- South Dakota Soybean Processors1
- South Side Rapid Transit1
- Southeastern Trailways1
- Southwestern1
- Southwestern Railroad1
- Soо Line1
- St. Louis & Hannibal Railroad1
- St. Louis, Brownsville and Mexican Railway1
- STA1
- Stadtwerke Gütersloh1
- Staley1
- Standard1
- Suburban Lines1
- Sunrise Plaza1
- SX1
- T.A.B.E.C.1
- T.B.W.1
- Tasmanian Government Railways1
- TC WR1
- TCWR1
- The Connecticut Company1
- The Nation's Railroad1
- The Niagara Parks Commission Peoplemover1
- TheBus1
- TILX1
- TIPHOOK1
- TNMR1
- TOCA1
- Torrance Transit1
- Trailer Train1
- Transit Authority of River City1
- Tricon Forest Products1
- Triton1
- UTLX1
- Van Galder Bus Company1
- Various1
- Voyager1
- Warren & Saline River Railroad Co.1
- WC1
- WHEEL1
- Wiener Stadtwerke Verkehrsbetriebe1
- Wisconsin Dells Shuttle1
- Wisconsin-Michigan Trailways1
- WL1
- WL O1
- Wuppertaler Stadtwerke1
- Yadkin Valley Railroad1
- Yorkshire (Y) Lines1