| a system of public transportation in a metropolitan area, usually a subway or elevated train system. |
| rapid transit n. An urban passenger transportation system using elevated or underground trains or a combination of both. |
rapid transit
system of railways, usually electric, that is used for local transit in a metropolitan area. A rapid transit line may run underground (subway), above street level (elevated transit line), or at street level. Rapid transit is distinguished from other forms of mass transit by its operation on exclusive right-of-way, with no access for other vehicles or for pedestrians. See elevated transit line; mass transit; subway.
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