馬里蘭區域通勤鐵路
MARC Train is the commuter rail system serving the Baltimore–Washington metropolitan area in the United States. The system is owned by the Maryland Transit Administration (MTA Maryland), and serves Maryland, Washington, D.C., and West Virginia. The system covers a total route length of along three rail lines. In the 2019 fiscal year, MARC Train service had average weekday ridership of 36,375 passengers.