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The Port Authority's bus system covers Allegheny County, and its service extends into small portions of neighboring Beaver, Butler, and Westmoreland counties. These counties also have their own transit systems, including several routes that run into Downtown Pittsburgh, where riders can make connections with Port Authority service. ==Route renumbering and realignments== From 1964 to 2010, the Port Authority used an alphanumeric numbering system. With the renumbering and realignments outlined in the Transit Development Plan in 2009, the present numbering system was adopted in April 2010. Light rail and busways are designated by the following colors: * Red Line—former 42S South Hills Village via Beechview light rail route * Blue Line—former 47S South Hills Village via Overbrook and 47L Library via Overbrook light rail routes * Brown Line—former 52 Allentown light rail route (eliminated in 2011) * Green—bus routes using the West Busway, designated with a 'G' * Purple—bus routes using the Martin Luther King Jr. East Busway, designated with a 'P' * Orange—bus routes using the I-279 HOV lane, designated with an 'O' * Yellow—bus routes using the South Busway, designated with a 'Y' As a result of the Transit Development Plan and a series of service cuts, many routes have been reworked or eliminated. 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「List of bus routes in Pittsburgh」の詳細全文を読む スポンサード リンク
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