Transportation Authority of Marin


TAM is comprised of Marin’s 11 cities and towns and the County of Marin. The TAM Board of Commissioners includes the five members of the County Board of Supervisors and an elected official from each city and town. TAM administers the expenditure plans for the Measure A, the 20-year 1/2-cent Transportation Sales Tax, Measure AA, the 30-year extension of Measure A, and Measure B, the $10 Vehicle Registration Fee. These revenue sources are dedicated to transportation projects and programs in Marin and were approved by the Marin voters. TAM also serves as Marin’s Congestion Management Agency (CMA) and is responsible for coordinating funding for many of the transportation projects and programs in the County.

TAM plays a major role in improving the quality of life for Marin County residents and in developing and maintaining the economic vitality of our local region by funding transportation projects and programs that improve mobility, reduce congestion, and provide a transportation system with more options for those living, working, visiting, and traveling in Marin County.