Streetcars in Washington, D.C. and Maryland Streetcars in Washington, D.C. and Maryland Streetcars and interurbans operated in the Maryland suburbs of Washington, D.C., between 1890 and 1962. Lines in Maryland were established as separate legal entities, but eventually they were all owned or leased by DC Transit (see Streetcars in Washington, D.C.). Unlike the Virginia lines, the Washington and Maryland lines were scheduled as a single system. Most of the streetcars were built with grand plans in mind, but none succeeded financially. A combination of the rise of the automobile, various economic downturns and bustitution eventually spelled the end of streetcars in southern Maryland. The Rock
Comptroller of the Treasury of Maryland v. Wynne collected by the state's comptroller of the treasury. Residents who earn income outside of Maryland may receive a credit against the state, but not the county income tax for income taxes paid on that income to other states. Nonresidents who earn income in Maryland must pay the state income tax and, in lieu of the county income tax, a "special nonresident tax" that was set at a rate "equal to the lowest county income tax rate set by any Maryland county." In 2006, Maryland residents Brian and Karen Wynne, a married couple, earned income from other states through an S