ナショナル・モール
Additional routes were later added to serve the National Mall (2006), the 14th Street Corridor (2009), the Washington Navy Yard (2009), Rosslyn to Dupont Circle (2010), and the Skyland Town Center development in Southeast Washington (2011). The two lines that served the National Mall and the Southwest Waterfront were discontinued in 2011 due to low ridership and redundant service. The National Mall route was reinstated on June 15, 2015. The route is operated in collaboration with the National Park Service.