BART

Bay Area Rapid Transit (BART) is a rapid transit system serving the San Francisco Bay Area in California. BART serves 50 stations along six routes and 131 miles of track, including eBART, a 9-mile (14 km) spur line running to Antioch, and Oakland Airport Connector, a 3-mile (4.8 km) automated guideway transit line serving Oakland San Francisco Bay Airport. With an average of 186,000 weekday passenger trips as of the fourth quarter of 2025 and 55,483,900 annual passenger trips in 2025, BART is the seventh-busiest rapid transit system in the United States.