About AC Transit

The Alameda-Contra Costa Transit District (AC Transit) has been in operation since 1960 and is the largest public bus-only system in California, and the 3rd largest bus-only transit agency in the United States. Based out of Oakland, California and multiple facilities throughout Alameda and Contra-Costa counties, AC Transit makes bus service available to 1.5 million East Bay residents that populate our 364 square mile service area. AC Transit operates a fleet of 640 buses and 6 facilities and is moving forward its zero emission program as funding becomes available. Currently, AC Transit connects to 16 other public and private bus systems, 25 BART stations, 6 Amtrak stations and 5 ferry terminals. AC Transit’s mission is to deliver safe, reliable, sustainable transit service that responds to the needs of our customers and community.