. . . . "Maryland Route 4 (MD 4) is a state highway in the U.S. state of Maryland. The state highway runs 64.85 miles (104.37 km) from MD 5 in Leonardtown north to Southern Avenue at the Washington, D.C. border, past which the highway continues as Pennsylvania Avenue. MD 4 is a major commuter route in Southern Maryland, connecting Washington and suburbs in Prince George's County, Anne Arundel County, and Calvert County."@en . . . . . "4" . . . . . "North" . . . "South" . . "MD" . . . "104366.0"^^ . .