In some parts of the world, metro systems are referred to as subways, undergrounds, tubes, mass rapid transit (MRT), metrô or U-Bahn. As of 22 December 2024, [update] 204 cities in 65 …
Rapid transit or mass rapid transit (MRT) or heavy rail, [2][3] commonly referred to as metro, is a type of high-capacity public transport that is generally built in urban areas.
The history of rapid transit began in London with the opening of the Metropolitan Railway, which is now part of the London Underground, in 1863. By World War I, electric underground railways …
Rapid transit is the name for a type of railway which has trains that run very often and carry many passengers at one time. It is usually in a city or urban area and takes people in and out of it.