High Quality Content by WIKIPEDIA articles! The Yellow Line of the Washington Metro consists of 17 rapid transit stations from Huntington to Fort Totten. During Rush Hours, certain trains run from Franconia Springfield to Greenbelt. Most trains terminate at the Mount Vernon Square station during peak hours. Service is extended to the Green Line stations during off-peak hours between Shaw – Howard University and Fort Totten. The line starts in Fairfax County, Virginia, crosses the Capital Beltway, goes through Alexandria and Arlington, crosses the Potomac River via the Fenwick Bridge, and continues north in the District of Columbia as far as M Street NW, at the entrance to the Washington Convention Center.