Loudoun County Transit is a public-transportation service provided by the Loudoun County, Virginia government. The buses operate from Dulles, Leesburg, and Purcellville to Washington Metro stations as well as directly to Rosslyn, Virginia, The Pentagon, and Washington, D.C.. The service is attractive because the buses, unlike normal traffic, are permitted to travel on the express lanes of the Dulles Toll Road. This allows for a shorter trip and also bypasses commuter tolls. The Loudoun County Commuter Bus accepts payment via SmarTrip, a reloadable transit card issued by the Washington Metropolitan Area Transit Authority.