).
| City
| State
| System
| Lines
| Authority
| Type (FTA) |
| Albuquerque
| New Mexico
| New Mexico Rail Runner Express
|
| Mid-Region Council of Governments
| Commuter rail |
| Atlanta
| Georgia
| MARTA Rail System
|
| Metropolitan Atlanta Rapid Transit Authority
| Heavy rail |
| Baltimore
| Maryland
| Metro Subway
|
| Maryland Transit Administration
| Heavy rail |
| Baltimore
| Maryland
| Light Rail
|
| Maryland Transit Administration
| Light rail |
| Boston
| Massachusetts
| MBTA Commuter Rail
|
| Massachusetts Bay Transportation Authority
| Commuter rail |
| Boston
| Massachusetts
| MBTA Subway
| Blue Line, Orange Line, and Red Line
| Massachusetts Bay Transportation Authority
| Heavy rail |
| Boston
| Massachusetts
| MBTA Subway
| Green Line and Ashmont-Mattapan High Speed Line
| Massachusetts Bay Transportation Authority
| Light rail |
| Buffalo
| New York
| Metro Rail
|
| Niagara Frontier Transportation Authority
| Light rail |
| Camden and Trenton
| New Jersey
| River Line
|
| NJ Transit
| Light Rail |
| Charlotte
| North Carolina
| LYNX Rapid Transit Services
| Blue Line
| Charlotte Area Transit System
| Light rail |
| Chicago
| Illinois
| Metra
|
| Northeast Illinois Regional Commuter Railroad Corporation
| Commuter rail |
| Chicago
| Illinois and Indiana
| South Shore Line
|
| Northern Indiana Commuter Transportation District
| Commuter rail |
| Chicago
| Illinois
| The L
|
| Chicago Transit Authority
| Heavy rail |
| Cleveland
| Ohio
| RTA Rapid Transit
| Red Line
| Greater Cleveland Regional Transit Authority
| Heavy rail |
| Cleveland
| Ohio
| RTA Rapid Transit
| Blue Line and Green Line
| Greater Cleveland Regional Transit Authority
| Light rail |
| Dallas
| Texas
| DART Rail
| Trinity Railway Express
| Dallas Area Rapid Transit
| Commuter rail |
| Dallas
| Texas
| DART Rail
| Blue Line and Red Line
| Dallas Area Rapid Transit
| Light rail |
| Dallas
| Texas
| M-Line
|
| McKinney Avenue Transit Authority
| Vintage trolley |
| Dallas
| Texas
| Las Colinas Area Personal Transit System
|
| Dallas County Utility and Reclamation District
|
|
| Dallas/Fort Worth
| Texas
| Skylink
|
| Dallas/Fort Worth International Airport
|
|
| Denver
| Colorado
| Light Rail
|
| Regional Transportation District
| Light rail |
| Denver
| Colorado
| Platte Valley Trolley
|
| Denver Rail Heritage Society
|
|
| Detroit
| Michigan
| Detroit People Mover
|
| Detroit Transportation Corporation
| Automated guideway transit |
| Fort Collins
| Colorado
| Fort Collins Municipal Railway
|
| Fort Collins Municipal Railway Society
|
|
| Galveston
| Texas
| Galveston Trolley
|
| Island Transit
|
|
| Houston
| Texas
| METRORail
|
| Metropolitan Transit Authority of Harris County, Texas
| Light rail |
| Indianapolis
| Indiana
| Clarian Health People Mover
|
| Clarian Health Partners, Inc.
|
|
| Jacksonville
| Florida
| Skyway
|
| Jacksonville Transportation Authority
| Automated guideway transit |
| Jersey City
| New Jersey
| Hudson-Bergen Light Rail
|
| New Jersey Transit
| Light rail |
| Kenosha
| Wisconsin
| Kenosha Streetcar Circulator
|
| Kenosha Transit
|
|
| Little Rock
| Arkansas
| River Rail Streetcar
|
| Central Arkansas Transit Authority
| Vintage trolley |
| Los Angeles
| California
| Metrolink
|
| Southern California Regional Rail Authority
| Commuter rail |
| Los Angeles
| California
| Metro Rail
| Purple Line and Red Line
| Los Angeles County Metropolitan Transportation Authority
| Heavy rail |
| Los Angeles
| California
| Metro Rail
| Blue Line, Green Line, and Gold Line
| Los Angeles County Metropolitan Transportation Authority
| Light rail |
| Los Angeles
| California
| Port of Los Angeles Waterfront Red Car Line
|
| Port of Los Angeles
| Vintage trolley |
| Memphis
| Tennessee
| Main Street Trolley
|
| Memphis Area Transit Authority
| Light rail |
| Miami
| Florida
| Tri-Rail
|
| South Florida Regional Transportation Authority
| Commuter rail |
| Miami
| Florida
| Metrorail
|
| Miami-Dade Transit
| Heavy rail |
| Miami
| Florida
| Metromover
|
| Miami-Dade Transit
| Automated guideway transit |
| Minneapolis
| Minnesota
| Hiawatha Line
|
| Metro Transit
| Light rail |
| Morgantown
| West Virginia
| Morgantown Personal Rapid Transit
|
| West Virginia University
|
|
| Nashville
| Tennessee
| Music City Star
|
| Regional Transportation Authority
| Commuter rail |
| New Haven
| Connecticut
| Shore Line East
|
| Connecticut Department of Transportation
| Commuter rail |
| New Orleans
| Louisiana
| New Orleans streetcars
|
| New Orleans Regional Transit Authority
| Light rail |
| New York
| New York
| Long Island Rail Road
|
| Long Island Rail Road
| Commuter rail |
| New York
| New York and Connecticut
| Metro-North Railroad
|
| Metro-North Commuter Railroad
| Commuter rail |
| New York
| New York, New Jersey, and Philadelphia
| New Jersey Transit commuter rail
|
| New Jersey Transit
| Commuter rail |
| New York
| New York
| New York City Subway
|
| New York City Transit Authority
| Heavy rail |
| New York (Staten Island)
| New York
| Staten Island Railway
|
| Staten Island Rapid Transit Operating Authority
| Heavy rail |
| New York
| New York and New Jersey
| Port Authority Trans-Hudson
|
| Port Authority of New York and New Jersey
| Heavy rail |
| New York
| New York
| AirTrain JFK
|
| Port Authority of New York and New Jersey
| Automated light rail |
| Newark
| New Jersey
| Newark Light Rail
|
| New Jersey Transit
| Light rail |
| Newark
| New Jersey
| AirTrain Newark
|
| Port Authority of New York and New Jersey
|
|
| Philadelphia
| Pennsylvania
| SEPTA Regional Rail
|
| Southeastern Pennsylvania Transportation Authority
| Commuter rail |
| Philadelphia
| Pennsylvania
| SEPTA Subway-Elevated Lines
|
| Southeastern Pennsylvania Transportation Authority
| Heavy rail |
| Philadelphia
| Pennsylvania
| Norristown High Speed Line
|
| Southeastern Pennsylvania Transportation Authority
| Heavy rail |
| Philadelphia
| Pennsylvania
| SEPTA Trolley Lines
|
| Southeastern Pennsylvania Transportation Authority
| Light rail |
| Philadelphia
| Pennsylvania and New Jersey
| PATCO Speedline
|
| Port Authority Transit Corporation
| Heavy rail |
| Pittsburgh
| Pennsylvania
| The T
|
| Port Authority of Allegheny County
| Light rail |
| Portland
| Oregon
| Metropolitan Area Express
|
| Tri-County Metropolitan Transportation District of Oregon
| Light rail |
| Portland
| Oregon
| Portland Streetcar
|
| Portland Streetcar, Inc.
| Streetcar |
| Portland
| Oregon
| Vintage Trolley
|
| Vintage Trolley, Inc.
|
|
| St. Louis
| Missouri and Illinois
| MetroLink
|
| Bi-State Development Agency
| Light rail |
| Sacramento
| California
| Light Rail
|
| Sacramento Regional Transit District
| Light rail |
| Salt Lake City
| Utah
| TRAX
|
| Utah Transit Authority
| Light rail |
| San Diego
| California
| Coaster
|
| San Diego Northern Railway
| Commuter rail |
| San Diego
| California
| San Diego Trolley
|
| San Diego Metropolitan Transit System
| Light rail |
| San Francisco
| California
| Caltrain
|
| Peninsula Corridor Joint Powers Board
| Commuter rail |
| San Francisco
| California
| Bay Area Rapid Transit
|
| San Francisco Bay Area Rapid Transit District
| Heavy rail |
| San Francisco
| California
| Muni Metro
|
| Municipal Transportation Agency
| Light rail |
| San Francisco
| California
| F Market
|
| Municipal Transportation Agency
| Light rail |
| San Francisco
| California
| Cable car system
|
| Municipal Transportation Agency
| Cable car |
| San Francisco
| California
| AirTrain
|
| San Francisco International Airport
|
|
| San Jose
| California
| Altamont Commuter Express
|
| San Joaquin Regional Rail Commission
| Commuter rail |
| San Jose
| California
| Light Rail
|
| Santa Clara Valley Transportation Authority
| Light rail |
| San Juan
| Puerto Rico
| Tren Urbano
|
| Departamento de Transportación y Obras Públicas
| Heavy rail |
| Seattle
| Washington
| Sounder
|
| Sound Transit
| Commuter rail |
| Tacoma
| Washington
| Tacoma Link
|
| Sound Transit
| Light rail |
| Tampa
| Florida
| TECO Line Streetcar System
|
| Hillsborough Area Regional Transit Authority
| Vintage trolley |
| Tucson
| Arizona
| Old Pueblo Trolley
|
| Old Pueblo Trolley, Inc.
|
|
| Washington
| District of Columbia and Maryland
| MARC
|
| Maryland Transit Administration
| Commuter rail |
| Washington
| District of Columbia and Virginia
| Virginia Railway Express
|
| Virginia Railway Express
| Commuter rail |
| Washington
| District of Columbia, Maryland, and Virginia
| Metrorail
|
| Washington Metropolitan Area Transit Authority
| Heavy rail |
