A transportation authority or transportation agency is a government agency which regulates, manages, or administers transportation-related matters,^[1][2] such as roads, transportation infrastructure, traffic management, or traffic code.

Transportation authorities go by a number of names, such as "department of transportation" or "ministry of transport", among others. They often manage other government agencies that oversee specific fields of transportation, such as civil aviation authorities, highway authorities, logistics regulators, rail transport regulators, maritime transport regulators, and transportation safety boards.

Some transportation authorities, such as Greater Vancouver's Translink, have the power to impose excise taxes (fuel taxes) on gasoline, diesel fuel, and other motor fuels.

In North America, the term "transportation authority" is often used to refer to public transport agencies operating buses and rapid transit in metropolitan areas, otherwise referred to as transit districts or passenger transport executives. Examples of such public transport authorities (or public transit authorities) include the New York Metropolitan Transportation Authority, the Los Angeles County Metropolitan Transportation Authority, and the Toronto Area Transportation Operating Authority.

v t e Public transport
Bus service	Bus driver list Bus rapid transit Charabanc Circle route Cross-city route Express bus Guided bus Intercity bus driver Marshrutka Open top bus Pesero Public light bus Rail replacement bus Share taxi/Taxibus Shuttle bus Transit bus Trolleybus
Rail	Passenger rail terminology glossary Airport rail link Cable car Commuter rail Circle route Cross-city route Elevated railway Funicular Heavy rail Heritage railway Heritage streetcar High-speed rail Higher-speed rail Horsecar Inter-city rail Interurban Light rail Maglev Train Medium-capacity rail system Monorail Narrow-gauge railway People mover Platform screen doors Railbus Metro/Rapid Transit Rubber-tyred metro Regional rail Street running Suspension railway Tram Tram-train
Vehicles for hire	Auto rickshaw taxi Boda boda Combination bus Cycle rickshaw Demand-responsive transport Microtransit Paratransit Dollar van Dolmuş Gondola Hackney carriage Jeepney Limousine Motorcycle taxi Marshrutka Nanny van Personal rapid transit Pesero Public light bus Pulled rickshaw Share taxi Songthaew Taxi Tuk tuk
Carpooling	Car jockey Flexible carpooling Real-time ridesharing Slugging Vanpool
Ship	Cable ferry Ferry Hovercraft Hydrofoil Ocean liner Vaporetto Water taxi
Cable	Aerial tramway Cable ferry Cable railway Elevator Funicular Gondola lift bicable tricable Inclined elevator
Building Transport	Elevator Escalator Moving walkway Inclined elevator
Other transport	Airline Airliner Carsharing Bicycle-sharing Scooter-sharing Elevator Escalator Horse-drawn vehicle Hyperloop Inclined elevator Moving walkway Personal transporter Robotaxi Shweeb Slope car Trackless train Vactrain
Locations	Airport Bus bulb Bus garage Bus lane Bus stand Bus station Bus stop Bus turnout (bus bay) Dry dock Ferry terminal Hangar Harbor Interchange station Kassel kerb Layover Metro station Park and ride Port Queue jump Taxicab stand Train station Tram stop Transit mall Transport hub
Ticketing and fares	Automated fare collection Bus advertising Contract of carriage Dead mileage Exit fare Fare avoidance Fare capping Fare evasion Farebox recovery ratio Free public transport Free travel pass Integrated ticketing Manual fare collection Money train Paid area Penalty fare Proof-of-payment Reduced fare program Smart cards (CIPURSE, Calypso) Ticket machine Transfer Transit pass
Routing	Circle route Cross-city route Network length Non-revenue track Radial route Transport network
Facilities	Checked baggage First class Sleeper Standing passenger Travel class
Scheduling	Bus bunching Clock-face scheduling Headway Night (owl) service On-time performance Public transport timetable Short turn
Politics	Airport security Complete streets Green transport hierarchy Rail subsidies Security Street hierarchy Transit district Transit police Transit-oriented development (TOD) Transportation authority Transportation demand management Transportation planning
Technology and signage	Destination sign Passenger information system Platform display Timetable
Other topics	Boarding Bus rapid transit creep Crush load Destination sign Dwell time Hail and ride Land transport Outline of transport Passenger load factor Public good Request stop Service Sustainable transport Timing point Transit map Transport economics Micromobility
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