Member Profile

Transportation Authority of Marin (TAM)

Agency Type

TAM works with towns, cities, transportation agencies and community groups to identify and prioritize transportation needs and to distribute local, state and federal funds to address those priorities. Our transportation projects and programs focus on a variety of needs including local roads, highways, interchanges, sidewalks, bicycle lanes, Safe Routes to Schools (SR2S), transit, paratransit, alternative fuels, innovation, and commute options.

TAM engages in planning activities to ensure we are pursuing effective and impactful projects and programs. Our planning efforts help guide transportation development and funding decisions that are responsive to current and future mobility needs.

TAM also coordinates closely with our regional, state and federal partners to create diverse funding packages, leverage funding sources, and implement projects and programs of local and regional importance.

Mission Statement

TAM is dedicated to making the most of Marin County transportation dollars and creating an efficient and effective transportation system that promotes mobility and accessibility by providing a variety of high-quality transportation options to all users.

Local Funding History

TAM was initially established in 2004 when Marin County voters approved the first local ½-cent transportation sales tax measure. Subsequently, in 2010 voters approved a Vehicle Registration Fee and in 2018 voters renewed the ½-cent Transportation Sales Tax for 30 years. Local funding sources are directly tied to expenditure plans that detail how funds are to be spent for local transportation improvements.

Population Represented
Program Highlights

Marin-Sonoma Narrows Project

TAM and the Sonoma County Transportation Authority (SCTA) are making steady progress to complete the final segments of the 17-mile carpool lane from Novato to Petaluma, including continuous Class I and Class II bikeways. The overall project, initiated in 2010, was divided into multiple phases as funding became available. The project will:

  • Widen 17 miles of US101 from four to six lanes by adding one high occupancy vehicle (HOV) lane in each direction
  • Create a controlled-access freeway section through the historic “Narrows” to improve traffic flow
  • Upgrade the highway to current freeway standards from Route 37 in Novato (Marin County) to Old Redwood Highway in Petaluma (Sonoma County)

North-South Greenway Gap Closure Project – Central Marin

The North-South Greenway Gap Closure project in Central Marin will replace a narrow, 4-foot pathway over Corte Madera Creek, along the northbound Highway 101 off-ramp to Sir Francis Drake Boulevard, with a 12-foot wide multi-use path. This project is part of an ongoing, multi-year effort to extend the bicycle-pedestrian network and provide a continuous connection between northern and southern Marin County. This section of the North-South Greenway connects to the Central Marin Ferry Connector, a recently completed bicycle/pedestrian bridge over Sir Francis Drake Boulevard and, continuing north, the Cal Park Tunnel which provides a safe and separated connection between Larkspur and San Rafael.  Funding for this project is through Regional Measure 2 administered by the Metropolitan Transportation Commission along with funds provided by the California Transportation Commission and the Bay Area Air Quality Management District.  TAM is managing this project in partnership with Caltrans and the City of Larkspur.



Safe Routes to Schools (SR2S)

TAM administers the SR2S Program, which works to relieve traffic congestion around schools by promoting alternatives to driving to school, such as walking, biking, taking the bus and carpooling. In addition, the program helps improve safety, promote a healthy lifestyle for youth and enhance the sense of community in neighborhoods. The SR2S Program enlists a variety of strategies including classroom education, special events, infrastructure improvements, a crossing guard program, and other strategies.

Alternative Fuels

TAM’s Alternative Fuel/Electric Vehicle (EV) Programs support the transition from fossil fuel based transportation to more sustainable alternative fuel vehicles and EVs. Switching to alternative fuel vehicles and EVs reduces harmful air pollution levels and decreases greenhouse gas emissions. The program includes rebates for public agencies to install charging infrastructure and replace fleet vehicles with EVs, as well as public awareness campaigns and educational events.

Marin Commutes

Marin Commutes is a comprehensive public engagement strategy to promote the benefits of alternative transportation options to single occupancy driving trips, and to build awareness of the incentives and tools available to Marin commuters. The program includes public outreach, workplace outreach, an emergency ride home program, first/last mile incentives and seasonal campaigns. serves as an information hub, outreach platform and focal point for commute options and promotions, providing localized information for those living and working in Marin County.

Related Stories
Board Makeup

The Board of Commissioners is comprised of the County of Marin Board of Supervisors (5 members) and a councilmember from each of the city/town councils (11 members).

Executive Director
Anne Richman
CALCOG Board Representative
To Be Determined/Vacant
Web Link
CALCOG Logomark


Subscribe to our newsletter