Your feedback about the service is important to us. Comments and questions are handled by AC Transit, one of the members of the Dumbarton Express consortium of transit agencies. To submit a question or comment, please complete the Customer Feedback Form, which is located on the AC Transit website. You may also call 510-891-4777, and say “Dumbarton Express” to reach a customer service representative during business hours.

Lost and Found

To report an item lost or found on a Dumbarton Express bus, please call MV Transportation, which operates the service. You can reach MV Transporation staff during business hours by calling 510-453-6043 Monday – Friday.