Washington Metropolitan Area Transit Authority

The Washington Metropolitan Area Transit Authority (often abbreviated as WMATA and commonly referred to as Metro) is a tri-jurisdictional government agency that operates transit service in the Washington Metropolitan Area. WMATA was created by the United States Congress as an interstate compact between the District of Columbia, the State of Maryland, and the Commonwealth of Virginia.

WMATA provides rapid transit service under the Metrorail brand, fixed-route bus service under the Metrobus brand, and paratransit service under the MetroAccess brand. The authority is also part of a public-private partnership that operates the DC Circulator bus system. WMATA has its own police force, the Metro Transit Police Department.

The authority's Board of Directors consists of two voting representatives each from the District of Columbia, Maryland, Virginia, and the federal government. Each jurisdiction also appoints two alternate representatives. WMATA has no independent taxation authority and depends on its member jurisdictions for capital investments and operating subsidies.

In addition to ongoing operations, WMATA participates in regional transportation planning and is developing future expansions of its system. These projects include an extension of Metrorail to Dulles Airport, street car lines in the District and northern Virginia, and light rail in suburban Maryland.