Tri-Valley Taxi Service is a Taxi Service Not a Limo Service Local Taxi Services in Tri-Valley Area. Flat Rates to SFO OAK SJC Airports Available Reservations Welcome 24/7 Call Center Airport Service To & from All Bay Area Airports. Serving Entire Tri-Valley Area. We Offer Flat Rates to SFO OAK SJC Airports From Tri-Valley Area. 24 hour Reservations welcome We Accepts all major credit cards. We...