<P> A number of light rail and urban streetcar projects have been proposed to extend or supplement service provided by Metro . Like the Silver Line in Virginia, the proposed Purple Line has been in planning since the 1980s . The project was originally envisioned as a circular heavy rail line connecting the outer stations on each branch of the Metrorail system, in a pattern roughly mirroring the Capital Beltway . The current proposal would create a light rail system in Maryland between the Bethesda and New Carrollton stations by way of Silver Spring and College Park . Such a plan would connect both branches of the Red Line to the Green and Orange Lines, and would decrease the travel time between suburban Metro stations . </P> <P> The Corridor Cities Transitway (CCT) is a proposed 15 - mile (24 km) bus rapid transit line that would link Clarksburg, Maryland in northern Montgomery County with the Shady Grove station on the Red Line . Assuming that the anticipated federal, state, and local government funds are provided, construction of the first 9 miles (14 km) of the system would begin in 2018 . </P> <P> In 2005, a Maryland lawmaker proposed a light rail system to connect areas of Southern Maryland, especially the rapidly growing area around the town of Waldorf, to the Branch Avenue station on the Green Line . </P> <P> The District of Columbia Department of Transportation is building the new D.C. Streetcar system to improve transit connectivity within the District . A tram line to connect Bolling Air Force Base to the Anacostia station and was originally expected to open in 2010 . Streetcar routes have been proposed in the Atlas District, Capitol Hill, and the K Street corridor . After seven years of construction, the Atlas District route, known as the H / Benning Street route, opened on February 27, 2016 . </P>

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