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. | 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. |