Distrito de Transporte Rápido del Área de la Bahía
The Bay Area Rapid Transit District, or BART, is a special-purpose district body that governs the Bay Area Rapid Transit system in the California counties of Alameda, Contra Costa and San Francisco. The system itself also serves northern San Mateo County and Santa Clara County; however, these counties have bought into the system and have neither a voting stake nor any representatives in the district proper.