AC Transit is a transit agency serving the western portions of Contra Costa and Alameda Counties. The agency also operates Transbay routes to San Francisco and selected areas in San Mateo and Santa Clara counties.
Discounts & Special Offers
Try Transit $25 Clipper Card Offer: Pledge to try transit as an alternative to driving alone to work or campus and receive a pre-loaded $25 Clipper card
Take 10 Free Transbay Commutes Offer: If you commute by driving alone between Contra Costa and San Francisco, try taking the bus on us. Apply for five free round-trip commutes on AC Transit’s Transbay service and try out a new commute.
Bikes on Buses
All AC Transit buses are equipped with bike racks at the front of the bus. Learn how to load and unload your bike from bus racks (pdf).
