Greenbelt, Maryland in a north-south direction, running parallel to the B–W Parkway, providing an alternate travel route into Washington, D.C., from Greenbelt. The southernmost Maryland portion of Kenilworth Avenue forms a major interchange with both the B–W Parkway and US 50 near the Maryland–D.C. line, and continues into Washington, as the Kenilworth Avenue Freeway (DC 295). Washington Metro′s rapid transit rail system serves Washington, D.C., and neighboring communities in Maryland and Northern Virginia, by operating 91 Metro stations, which includes the Greenbelt station, the northern terminus of Metro′s Green Line. Commuter rail service to the station is provided by MARC Train′s Camden
Maryland Route 4 Maryland Route 4 Maryland Route 4 (MD 4) is a state highway in the U.S. state of Maryland. The highway runs from MD 5 in Leonardtown north to Southern Avenue in Suitland at the District of Columbia boundary, beyond which the highway continues into Washington as Pennsylvania Avenue. MD 4 is a four- to six-lane highway that connects Washington and communities around the Capital Beltway (Interstate 95 and I-495) with southern Prince George's County with southwestern Anne Arundel County. The highway is the primary highway for the length of Calvert County, during most of which the route runs concurrently with