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rapid transit
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rapid transit

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Also known as: heavy rail transit
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Metro Center Station in Washington, D.C.
Metro Center Station in Washington, D.C.The Metro Center Station in the Washington, D.C., subway opened in 1976. The greatest number of trips on the line on a single day, 1.12 million, occurred during the inauguration of U.S. Pres. Barack Obama on January 20, 2009.

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.

This article was most recently revised and updated by Chelsey Parrott-Sheffer.