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The '''Metrorail''', often referred to as the Metro, is the public subway system in [[Washington, D.C.]] It began operations in 1976. The subway system consists of five "lines":  the Red, Orange, Green, Blue, and Yellow lines.  

'''Metrorail''', often referred to as the Metro, is the public subway system in [[Washington, D.C.]], owned by the Washington Metropolitan Area Transit Authority, a government agency established by [[compact|interstate compact]] between [[District of Columbia|the District of Columbia]], [[Maryland]] and [[Virginia]] with the approval of [[Congress]].  The Authority also operates a bus system known as [[Metrobus]].

 

Metrorail began operations in 1976. The subway system consists of five "lines":  the Red, Orange, Green, Blue, and Yellow lines.

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