Alameda counties (including Alameda, Berkeley, Fremont, Hayward, Oakland, Richmond and San Leandro) is provided by AC Transit. AC Transit also operates Transbay service to and from San Francisco over the San Francisco–Oakland Bay Bridge. Service in San Francisco is provided by the San Francisco Municipal Railway. Service on the Peninsula is provided by SamTrans in San Mateo County with connections to San Francisco and Palo Alto. Service in the South Bay is provided by the VTA in Santa Clara County between Palo Alto and San Jose. All Nighter service generally operates daily between midnight and 5 a.m. AC Transit's Transbay service operates until 6 a.m. on Saturdays and 8 a.m. on Sundays and designated holidays to correspond with the times BART is not operating. Transfer points The All Nighter network has two primary pulse transfer points where routes are coordinated to meet and provide direct transfers between agencies. The primary transfer point in San Francisco is at Market Street and Van Ness Avenue, where Muni, AC Transit, and SamTrans meet. Timed transfers are available between Muni's L Owl and 90 San Bruno Owl lines, AC Transit route 800, and SamTrans route 397. Muni's N Owl line stops there as well, but without any timed transfers to other All Nighter buses. The primary transfer point in downtown Oakland is at Broadway and 14th Street, where various AC Transit routes meet. Timed transfers are available between AC Transit routes 800, 801, 802, 805, 840, and 851. Secondary timed transfer points are located at seven different locations in San Francisco. The transfer point between SamTrans and VTA is near the Transit Center, which connects SamTrans route 397 with VTA route 22; the routes are not coordinated. Service gaps The All-Nighter network operates primarily in dense areas centered on Oakland and San Francisco. No overnight service is provided to several parts of the Bay Area: Marin and Sonoma counties in the Golden Gate Transit service area (limited late night/early morning service is offered on GGT routes 30 and 101) Eastern Contra Costa County in the Tri-Delta Transit and County Connection service areas Western San Mateo County in the SamTrans service area Solano County in the SolTrans service area. Southern Alamdea County and northern Santa Clara County between Fremont and San Jose Among the major bridges crossing the Bay, only the San Francisco Bay Bridge has All Nighter service, connecting San Francisco and Oakland. Routes