- Locale
- San Francisco Bay Area ( Alameda , Contra Costa , San Francisco , San Mateo , and Santa Clara counties)
- Transit type
- Rapid transit (main system) Hybrid rail ( eBART ) AGT ( Oakland Airport Connector )
- Number of lines
- 5 rapid transit lines (1 with diesel light rail extension) 1 AGT line
- Number of stations
- 50 (7 planned/proposed)
- Daily ridership
- 186,000 (weekdays, Q1 2026)
- Annual ridership
- 55,483,900 (2025)
- Chief executive
- Robert Powers
- Headquarters
- 2150 Webster Street, Oakland, California
- Website
- bart .gov
- Began operation
- September 11, 1972 ( 1972-09-11 )
- Operator s
- San Francisco Bay Area Rapid Transit District