Transportation

Qatar–Bahrain Causeway (Friendship Bridge) Qatar Bahrain Causeway Planned road-and-bridge link between Qatar and Bahrain announced in 2008. Intended to improve trade and travel, the scheme has been repeatedly delayed by technical, financial and p…

Qingzang Railway (Qinghai–Tibet Railway) Qingzang railway High‑altitude railway linking Xining to Lhasa, notable for engineering across permafrost and the world's highest rail sections, with social, economic and environmental significance…

Queensboro Bridge (Ed Koch Queensboro Bridge) Queensboro Bridge Cantilever steel bridge across the East River in New York City linking Midtown Manhattan and Long Island City, opened 1909 and officially renamed for Ed Koch in 2011.

Queensland Rail Queensland Rail is the state-owned operator of passenger rail and rail infrastructure in Queensland, Australia, providing suburban, regional and long-distance services and managing…

Queenstown MRT Station (EW23) Queenstown MRT station Queenstown MRT Station (EW23) is an elevated station on Singapore’s East West Line, opened 12 March 1988. It serves the Queenstown residential area and provides interchange with lo…

Quezon Avenue — Major arterial road in Quezon City, Philippines Quezon Avenue Quezon Avenue is a principal east–west thoroughfare in Quezon City, Metro Manila. It links Quezon Memorial Circle with the Welcome Rotunda and connects to major arteries such as ED…

R101: British rigid airship of the Imperial Airship Scheme R101 R101 was a British rigid airship built in the 1920s as part of the Imperial Airship Scheme. It crashed in France in 1930 on a voyage to India, ending Britain's major program of pas…

Raffles Place MRT station (EW14 / NS26) Raffles Place MRT station Underground interchange MRT station beneath Singapore’s central financial district, serving North South and East West lines. Key transit hub with many entrances, historical notes,…

Rail: railway rails, railings, and related meanings Rail An overview of rails: the metal members forming railway tracks, plus handrails, guard rails and other meanings. Covers types, history, uses, components, safety and common distincti…

Rail freight transport Rail freight transport moves goods by trains over railway networks. It includes bulk, intermodal and specialized cargo, and varies by equipment, economics, history and regional pra…

Rail gauge: definition, types, history and operational impacts Rail gauge Rail gauge is the distance between the inner faces of the two rails. This article explains measurement, common gauges (including standard and metre), historical causes, and how rai…

Rail replacement bus service A rail replacement bus service provides bus transport to substitute for scheduled passenger train services during planned works, disruptions or emergencies, maintaining passenger r…

Rail transport: systems, history, components and modern roles Rail transport Comprehensive overview of rail transport: key components, types, historical development, operations, economic and environmental roles, safety and modern trends including electrific…

Rail yard: layout, operation, and role in rail transport Rail yard An overview of rail yards: their purpose, common layouts and equipment, operational processes like classification and switching, historical development, and their economic and safe…

Railbus A railbus is a lightweight passenger rail vehicle that adapts bus components to a rail chassis to provide low-cost service on lightly used lines; it inspired national variants and…

Railfan (rail enthusiast): hobbies, history, and community Railfan Railfans are enthusiasts of railways and trains who pursue photography, modeling, history, collections and community activities; they share knowledge through clubs, museums, magazi…

Railfreight Distribution (British Rail freight sector) Railfreight Distribution Former British Rail sector handling non-trainload, intermodal and Freightliner traffic; linked to Speedlink wagonload services and later Channel Tunnel freight operations, reorgani…

Railroad classes in North America Railroad classes Classification of railroads (Class I, II, III) groups carriers by size and revenue for regulatory, reporting, and operational purposes across the United States, Canada, and Mexico.

Railway brake systems: function, types and history Railway brake Overview of railway braking systems: how they work, main types (air, vacuum, tread, disc, dynamic), key components, historical development and operational importance.

Railway electrification system An introduction to railway electrification: how electrical power is delivered to trains, system types, history, advantages and trade-offs, and typical applications.

Railway stations of Aberdeen Overview of Aberdeen’s railway stations, past and present, including the surviving main station, former passenger terminals, and the city’s 19th-century rail history.

Railway track: structure, function, history and types Railway track A railway track is the fixed steel path that guides trains. This article explains its parts (rails, sleepers/ties, ballast), design principles, history, maintenance, common types a…

Railways in Melbourne: history, network, and modern operations Railways in Melbourne Comprehensive overview of Melbourne’s railway system: origins, suburban and regional networks, electrification, rolling stock, infrastructure, governance and contemporary challenge…

Rainham (Kent) railway station Railway station serving Rainham in Kent on the Chatham Main Line. Local commuter hub with passenger facilities, connections to bus and town centre, and distinct identity from Rainh…

Ramp: inclined planes, devices, and other meanings Ramp An overview of ramps: inclined planes for access and transport, design considerations, types (accessibility, loading, sports, vehicle, aircraft), safety, materials, and the edible…

Range Rover — luxury off‑road SUV by Land Rover Range Rover The Range Rover is Land Rover’s flagship luxury sport-utility vehicle line, combining all‑terrain capability with high-end comforts. Covers design, history, variants, uses and rece…

Ranggung LRT Station (SE5) — Sengkang LRT, Singapore Ranggung LRT Station Ranggung LRT (station code SE5) is an elevated light rail station on the Sengkang LRT Line east loop in Sengkang, Singapore; opened 18 January 2003 and operated by SBS Transit.

Rapid transit (metro, subway): high-capacity urban rail Rapid transit Rapid transit is a high-frequency, high-capacity urban rail system—often called metro, subway, or underground—designed to move large numbers of people quickly without mixing with s…

Reading railway station: England’s major rail junction and transport hub Reading railway station Reading railway station is a key rail junction on the edge of Reading town centre, serving as a busy interchange for regional, national and local services with adjacent bus and coa…

Rear-wheel drive (RWD) Rear-wheel drive Rear-wheel drive (RWD) is a drivetrain layout that sends engine power to the rear wheels. It affects traction, handling, packaging and is common in performance cars, trucks and lux…

Rectory Road railway station, Stoke Newington (London Overground) Rectory Road railway station Local railway station in Stoke Newington, north-east London. On the Seven Sisters branch of the Lea Valley Lines, in Travelcard Zone 2, with services to Liverpool Street, Enfield T…

Red Line (CTA) — Chicago's north–south rapid transit route Red Line (CTA) The Red Line is the Chicago Transit Authority's busiest rail route, running 24/7 between Howard on the north side and 95th/Dan Ryan on the south, serving the Loop via the State Str…

Redhill MRT station (EW18) — Bukit Merah, Singapore Redhill MRT station Redhill MRT (EW18) is an above‑ground station on Singapore’s East–West Line in Bukit Merah, known for its non‑parallel platforms and role as a transition point between elevated and…

Regional Railways (British Rail passenger sector) Regional Railways British Rail sector that managed local and regional passenger services outside InterCity and London commuter networks; created in 1982 as Provincial and disbanded after 1990s priva…

Renault 4 (R4) — compact versatile car produced 1961–1992 Renault 4 The Renault 4 (R4 or 4L) is a compact, practical hatchback produced by Renault from 1961 to 1992. Known for its simple mechanics, versatility and long production run, it became a s…

Renault 5 — compact hatchback and small‑car icon Renault 5 Compact supermini produced by Renault from 1972 to 1996. Two generations, 3- and 5-door hatchbacks, petrol and diesel engines, notable Turbo performance versions, and a lasting inf…

Renault Clio: compact supermini from Renault Renault Clio Comprehensive overview of the Renault Clio, the compact supermini introduced in 1990. Covers design, generations, body styles, engines, performance variants, markets and technology…

Renault Espace: European MPV introduced in 1984 Renault Espace The Renault Espace is a multi-purpose vehicle (MPV) first shown in 1984. A seven-seat family car that helped define the European MPV segment, it evolved through five generations in…

Renault FR1 coach (1987–1997) Renault FR1 Single-deck medium- and long-distance coach built by Renault from 1987 to 1997, noted for its 9.8 L six-cylinder turbo diesel and later facelift into the Renault Iliade.

Renault Laguna — mid-size family car (1994–2015) Renault Laguna Mid-size family car produced by Renault from 1994 to 2015 in three generations, offered in hatchback, estate and coupé forms; noted for comfort, safety innovation and its role in R…

Renault Master: overview of the light commercial vehicle Renault Master The Renault Master is a versatile range of light commercial vans, chassis and minibuses produced since 1980. It is offered in multiple lengths, roof heights and body styles and mar…

Renault Mégane — compact family car by Renault Renault Mégane Compact family car introduced in 1995 by Renault, the Mégane has been renewed across several generations with hatchback, estate, coupe, convertible and high‑performance variants, a…

Renault Tracer — intercity coach (1991–2001) Renault Tracer The Renault Tracer was a single-deck intercity and long-distance coach produced by Renault from 1991 to 2001, designed for regional services, charters and express routes and later…

Renault Trafic Light commercial van produced by Renault since 1981, offered in cargo and passenger forms, known for versatility, shared-platform variants, and multiple generations with facelifts…

Renault Twingo: compact city car and its evolution since 1993 Renault Twingo A concise overview of the Renault Twingo city car: design traits, generational history from 1993, key changes across models, market role, and notable technical and market distincti…

Renjong LRT Station (SW8) — Sengkang, Singapore Renjong LRT Station Renjong LRT Station (SW8) is a light rail stop in Sengkang, Singapore. Opened in January 2005, it serves the Sengkang LRT west loop and provides local feeder links to the town cent…

Republic P-47 Thunderbolt ("Jug"): American WWII Fighter-Bomber Republic P-47 Thunderbolt The Republic P-47 Thunderbolt, nicknamed the "Jug", was a large, rugged single-engine American fighter introduced in 1942 and later adapted for ground-attack duties in World War II…

Request stop A request stop (flag stop or whistle stop) is a transport stop where a vehicle halts only if passengers or freight require boarding or alighting, commonly used on low‑demand, rural…