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Rapid transit or mass rapid transit (MRT), also known as heavy rail, metro, subway, tube, U-Bahn, T-Bane, metropolitana or underground, is a type of high-capacity public transport generally found in urban areas. Unlike buses or trams, rapid transit systems are electric railways that operate on an exclusive right-of-way, which cannot be accessed by pedestrians or other vehicles of any sort, and which is often grade-separated in tunnels or on elevated railways.
Modern service on rapid transit systems are provided on designated lines between stations typically using electric multiple units on rail tracks, although some systems use guided rubber tires, magnetic levitation (maglev), or monorail. The stations typically have high platforms, without steps inside the trains, requiring custom-made trains in order to minimize gaps between train and platform. They are typically integrated with other public transport and often operated by the same public transport authorities. However, some rapid transit systems have at-grade intersections between a rapid transit line and a road or between two rapid transit lines.
The world's first rapid transit system was the partially underground Metropolitan Railway which opened as a conventional railway in 1863, and now forms part of the London Underground. In 1868, New York opened the elevated West Side and Yonkers Patent Railway, initially a cable-hauled line using static steam engines.
As of 2021, China has the largest number of rapid transit systems in the world—40 in number, running on over 4,500 km of track—and is responsible for most of the world's rapid-transit expansion in the past decade. The world's longest single-operator rapid transit system by route length is the Shanghai Metro. The world's largest single rapid transit service provider by number of stations (472 stations in total) is the New York City Subway. The busiest rapid transit systems in the world by annual ridership also include the Tokyo subway system, the Singapore MRT, the Moscow Metro, the Beijing Subway, the Shanghai Metro, the Shenzhen Metro, the Delhi metro, and the Guangzhou Metro.
referencePosted on 29 Apr 2022, this text provides information on Miscellaneous in Community related to Community. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.
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