Sonoma County Transit provides intercity bus service in Sonoma County and local service in Rohnert Park, Cotati, Guerneville, Sebastopol, Sonoma, and Windsor.

SolTrans provides local and express bus service to the Solano County cities of Vallejo, Benicia, and Fairfield, and Suisun City with express bus service connecting to the Contra Costa County communities of El Cerrito, Pleasant Hill and Walnut Creek at BART stations. Nine local fixed routes serve Vallejo, five limited service routes operate during school in-service dates within Vallejo and Benicia, and two express routes connect Benicia and Vallejo to surrounding areas.

Commute.org manages over 20 routes that provide first/last mile shuttle service between transit stations, worksites and residential areas in San Mateo County. The shuttle program is funded by grants from local agencies as well as contributions from private employers and sponsoring cities. Commute.org is San Mateo County’s TDM agency.