. . . . . "MARC (Maryland Area Regional Commuter), prior to 1984 known as Maryland Rail Commuter Service, is a commuter rail system comprising three lines in the Baltimore-Washington Metropolitan Area. MARC is administered by the Maryland Transit Administration (MTA), a Maryland Department of Transportation agency, and is operated under contract with CSX Transportation and the National Railroad Passenger Corporation (Amtrak)."@en . "MARC Train"@en . "MARC (Maryland Area Regional Commuter), prior to 1984 known as Maryland Rail Commuter Service, is a commuter rail system comprising three lines in the Baltimore-Washington Metropolitan Area. MARC is administered by the Maryland Transit Administration (MTA), a Maryland Department of Transportation agency, and is operated under contract with CSX Transportation and the National Railroad Passenger Corporation (Amtrak)."@en . .