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- Rack railwaySteep-grade railway with a toothed rack rail
- Radial enginePiston engine configuration
- Radio navigationUse of radio-frequency electromagnetic waves to determine position on the Earth's surface
- RaftFlat structure for support or transportation over water
- Rail freight transportPractice of transporting cargo by rail
- Rail profileCross sectional shape of a railway rail
- Rail subsidiesMonetary support for railways
- Rail transportMode of transport
- Rail transport by countryThis page provides an index of articles on rail transport by country.
- Rail transport in JapanRail transport in Japan is a major means of passenger transport, especially for mass and h
- Rail transport in MadagascarRail transport in Madagascar is primarily operated by Madarail. There are two unconnected
- Rail transport in SwitzerlandRail transport in Switzerland is noteworthy for the density of its network, its coordinati
- Rail transport modellingModelling trains hobby
- Rail transport operationsRailway rolling stock and infrastructure
- Rail transportation in the United StatesRail transportation in the United States includes freight and passenger service. Freight m
- Rail yardEnclosed area designated for railways
- RailcarSelf-propelled single railway vehicle for passengers
- Railroad carVehicle used for carrying cargo or passengers on a rail transport system
- RailtrackRailtrack was a group of companies that owned the track, signalling, tunnels, bridges, lev
- Railway couplingMechanism for connecting rolling stock in a train
- Railway electrificationConversion of railways to use electricity for propulsion
- Railway infrastructure managerA railway infrastructure manager is a rail transport company or body of other type, respon
- Railway platformFixed structure to allow people to board or alight trains
- Railway trackRail infrastructure
- Railways in MelbourneRailway network in Melbourne, Victoria, Australia
- Rákóczi tér metro stationRákóczi tér is a station on Line 4 of the Budapest Metro. It is located beneath the eponym
- RamjetSupersonic atmospheric jet engine
- Rapid transitHigh-capacity public transport
- Rapido (company)Indian online bike taxi aggregator
- Rathaus Neukölln (Berlin U-Bahn)Rathaus Neukölln (Neukölln Town Hall) is a Berlin U-Bahn station located on the U7 line.
- Rathaus Reinickendorf (Berlin U-Bahn)Rathaus Reinickendorf (Reinickendorf Town Hall) is a Berlin U-Bahn station located on the
- Rathaus Schöneberg (Berlin U-Bahn)Rathaus Schöneberg (Schöneberg Town Hall) is a station on the U4 line of the Berlin underg
- Rathaus Spandau (Berlin U-Bahn)Rathaus Spandau (Spandau Town Hall) is the western terminus of Berlin U-Bahn line U7 (the
- Rathaus station (Vienna U-Bahn)Rathaus is a station on U2 of the Vienna U-Bahn. It is located in the Innere Stadt Distric
- ReachNowReachNow was a carsharing service operated by BMW Group in Seattle, Portland, and Brooklyn
- Reaction engineType of engine
- Reactions to the 2016 Brussels bombingsA number of countries, national leaders and international organisations expressed comments
- ReceiptWritten acknowledgment that a person has received money or property in payment
- Recreational vehicleTypes of vehicles
- Recumbent bicycleType of bicycle
- Red Line (RTA Rapid Transit)Rapid transit line in Cleveland, Ohio
- Red River TrailsThe Red River Trails were a network of ox cart routes connecting the Red River Colony (the
- Rede Integrada de TransporteBus rapid transit network in Curitiba, Brazil
- Refshaleøen, CopenhagenRefshaleøen is a former industrial site in the harbor of Copenhagen, Denmark, originally o
- Refuge islandA refuge island, also known as a pedestrian refuge or pedestrian island, is a small sectio
- Regenerative brakingEnergy recovery mechanism
- Regio Cantiere di Castellammare di StabiaThe Regio Cantiere di Castellammare di Stabia (Royal Dockyard of Castellammare di Stabia)
- Regional railInter-urban passenger train with frequent stops
- Regulatory signA regulatory sign is used to indicate or reinforce traffic laws, regulations or requiremen
- Rehberge (Berlin U-Bahn)Rehberge is a station in the Wedding district of Berlin which serves the U6 line and is op
- Reich Ministry of TransportAgency of the German government, 1919–1945
- ReichsautobahnInitial phase of the German Autobahn (limited access highway) network
- Reinickendorfer Straße (Berlin U-Bahn)Reinickendorfer Straße is a Berlin U-Bahn station located on the U6.
- Remotely operated underwater vehicleTethered underwater mobile device operated by a remote crew
- RencaRenca is a commune of Chile located in Santiago Province, Santiago Metropolitan Region. It
- Renfe Class 120 / 121The Renfe Class 120 are electric multiple units used on Alvia high-speed rail services in
- Renfrew stationRenfrew is an elevated station on the Millennium Line of Metro Vancouver's SkyTrain rapid
- Reporting markAlphabetic code ID used on the North American railroad network
- Repubblica – Teatro dell'Opera (Rome Metro)Repubblica–Teatro dell'Opera is an underground station on Line A of the Rome Metro. The st
- Réseau Express de l'Aire urbaine LyonnaiseRéseau Express de l'Aire métropolitaine Lyonnaise (or Real) is a project that consists in
- Réseau Express RégionalSuburban commuter rail network in the Paris region
- Residenzstraße (Berlin U-Bahn)Residenzstraße is a Berlin U-Bahn station located on the U8. Opened in 1987 (Rümmler) this
- Resilience (engineering and construction)In the fields of engineering and construction, resilience is the ability to absorb or avoi
- Rest areaPublic area, usually adjacent to limited-access highway, used for rest from travel
- Retail vehicleVehicle from which retail goods are sold
- Retractable bridgeA retractable bridge is a type of moveable bridge in which the deck can be rolled or slid
- Rhine–Danube CorridorThe Rhine–Danube Corridor (previously known as Seine–Danube Corridor and Strassburg–Danube
- Rho Fiera (Milan Metro)Rho Fiera is a station on Line 1 of the Milan Metro in Rho, Lombardy, Italy. It was opened
- Rhode Island Department of TransportationGovernment agency in Rhode Island, United States
- Richard-Wagner-Platz (Berlin U-Bahn)Richard-Wagner-Platz is a Berlin U-Bahn station located on the U7 in the Charlottenburg di
- Richmond–San Rafael BridgeBridge crossing the San Francisco Bay
- RickshawTwo- or three-wheeled passenger cart
- Right of wayLegal authority to use a specific route
- Rigid airshipAirship in which the envelope is supported by a framework
- Rio de Janeiro MetroRapid transit network serving Rio de Janeiro, Brazil
- River engineeringStudy of human intervention in the course, characteristics, or flow of rivers
- RiverboatWatercraft designed for inland navigation
- RoadLand route
- Road junctionLocation where two or more roads meet
- Road rollerCompactor type engineering vehicle
- Road safetyMethods and measures for reducing the risk of death and injury on roads
- Road Safety FoundationThe Road Safety Foundation is a United Kingdom charity which carries out and procures rese
- Road safety in EuropeRoad safety in Europe encompasses transportation safety among road users in Europe, includ
- Road saltChemicals used to de-ice surfaces
- Road signs in CanadaRoad signs in Canada may conform to the Manual of Uniform Traffic Control Devices for Cana
- Road space rationingTravel demand management strategy
- Road surfaceRoad covered with durable surface material
- Road surface markingAny kind of device or material used on a road surface to convey official information
- Road taxTax paid for use of a vehicle on roads
- Road trainType of trucking vehicle
- Road transportCollective term for all forms of transport which takes place on roads
- Road vergeVegetative strip beside a roadway
- RoadworksConstruction of surfacing/building road with asphalt or concrete
- RobotaxiTaxi without a human driver
- Rocket-powered aircraftAircraft which uses a rocket engine for propulsion
- Rocketplane Global Inc.Rocketplane Global Inc. is a reusable rocketplane aerospace design and development company
- Rocky Mount, North CarolinaRocky Mount is a city in Nash and Edgecombe counties in the U.S. state of North Carolina.
- RodočRodoč is a populated settlement in the Mostar municipality, just south of the city of Most
- Rogoredo (Milan Metro)Rogoredo FS is a station on Line 3 of the Milan Metro in Milan, Italy. The station was ope
- Rohloff SpeedhubThe Rohloff Speedhub is an epicyclic internal hub gear for bicycles, developed and patente
- Rohrdamm (Berlin U-Bahn)Rohrdamm is a station on the Berlin U-Bahn line U7 in the Siemensstadt district.
- Roissy-en-FranceRoissy-en-France (French pronunciation: , lit. "Roissy-in-France" after the Pays de France
- Roll-on/roll-offVessels designed to carry wheeled cargo
- Rolling stockRailway vehicles, powered and unpowered
- Rolls-Royce ConwayThe Rolls-Royce RB.80 Conway was the first turbofan jet engine to enter service. Developme
- Roman roadsRoads built in service of the ancient Roman civilization
- Rome MetroRapid transit system in Rome, Italy
- Romolo (Milan Metro)Romolo is a station on Line 2 of the Milan Metro. The station is located between Viale Rom
- Rosa-Luxemburg-Platz (Berlin U-Bahn)Rosa-Luxemburg-Platz is a Berlin U-Bahn station located on the U2. It was formerly called
- Rosenthaler Platz (Berlin U-Bahn)Rosenthaler Platz is a Berlin U-Bahn station located on the U8. Opened in 1930, the statio
- Rotating detonation engineType of rocket engine
- Rotes Rathaus (Berlin U-Bahn)Rotes Rathaus is a subway station in Berlin's Mitte district. It is part of the extension
- RotorcraftHeavier-than-air aircraft with rotating wings
- Rotterdam MetroRapid transit system in Rotterdam, Netherlands
- Rotterdam Rules2009 admiralty law convention
- RoundaboutTraffic intersection
- Route assignmentRoute assignment, route choice, or traffic assignment concerns the selection of routes (al
- Routes of Santiago de Compostela in FranceUNESCO designated the Routes of Santiago de Compostela in France as a World Heritage Site
- Rovereto (Milan Metro)Rovereto is a station on Line 1 of the Milan Metro. It was opened on 1 November 1964 as pa
- RowingAct of propelling a boat using oars
- Royal Air Force roundelsThe air forces of the United Kingdom – the Royal Navy's Fleet Air Arm, the Army's Army Air
- Royal Air Force Voyager VespinaUnited Kingdom principal VIP aircraft, operated by the Royal Air Force
- Royal Hong Kong Auxiliary Air ForceThe Royal Hong Kong Auxiliary Air Force (RHKAAF) was a Hong Kong Government department bas
- Royal National Lifeboat InstitutionRescue charity operating in Britain and Ireland
- Rubber-tyred metroForm of rapid transit
- Rubber-tyred tramDevelopment of the guided bus
- RudderControl surface for fluid-dynamic steering in the yaw axis
- Rüdesheimer Platz (Berlin U-Bahn)Rüdesheimer Platz is a Berlin U-Bahn station located in the Wilmersdorf district on the U3
- Ruhleben (Berlin U-Bahn)Ruhleben is a Berlin U-Bahn station, the western terminus of line U2. Named after the adja
- RunwaySurface used for takeoff or landing
- Rupert stationRupert is an elevated station on the Millennium Line of Metro Vancouver's SkyTrain rapid t
- Russian Air ForceBranch of the Russian Aerospace Forces