exits to the freeway. A portion of the street travels in a tunnel underneath Washington Circle, allowing through traffic to avoid the circle. Portions of the street are divided into both "local" (or service) lanes and "express" lanes in both directions. Proposed The Washington Metropolitan Area Transit Authority has been studying the conversion of K Street into part of a proposed busway. The route would begin at Georgetown University, cross downtown Washington on K Street, switch to Massachusetts Avenue at Mount Vernon Square, and end at Union Station. Currently, the DC Circulator provides service along most of the proposed route, although it must share right of way with other vehicles. A streetcar line spanning from 26th Street NW to the H Street line's terminus at Union Station is planned as the next phase of DC's streetcar expansion. A proposal announced April 7, 2022, would redesign K Street between 12th and 21st Streets, N.W. The proposal would remove the service lanes in favor of dedicated bus and bicycle lanes. Under the proposal, construction would begin in the spring of 2023. Lobbying "K Street" is the common and often negative metonym for Washington's lobbying industry. Many of the major Washington lobbying firms were located on the section in Northwest Washington which passes from Georgetown through a portion of downtown D.C., although the strip has grown less popular for lobbyists in recent years. The major lobbying firms that remain on K Street, as of 2017, include CGCN Group and K&L Gates. The 2003 HBO television series K Street about a lobbying firm takes its name and location from the street. See also Lobbying in the United States Tufton Street - a similar location in London hosting think-tanks and lobbyists References External links K Street Busway project leaflet "The Road to Riches Is Called K Street" Streets in Washington, D.C. U.S. Route 29