Who We Are

Major milestones in the Transportation Authorities first 25 yearsThe San Francisco County Transportation Authority is the sub-regional transportation planning and programming agency for San Francisco County. Originally created to administer the proceeds of Proposition B, the first local sales tax for transportation, approved by the voters in 1989, the Authority has since been asked to take on a number of additional roles and responsibilities mandated by state law. These new roles complement the agency’s original purpose and contribute to its increased effectiveness. In November 2003, San Francisco voters approved Proposition K, adopting a new 30-year Expenditure Plan, which superseded Proposition B, and extended the existing half-cent local transportation sales tax. The Authority began collecting Prop K revenues on April 1, 2004.

Pursuant to state law, the Transportation Authority is a separate legal entity from the City and County of San Francisco, with its own staff, budget, operating rules, policies, board and committee structure. The Transportation Authority's borrowing capacity is separate and distinct from that of the City and County of San Francisco.

The Transportation Authority has also served as the San Francisco Program Manager for grants from the Transportation Fund for Clean Air (TFCA) since 1990. In this role, the Transportation Authority approves funding for transportation projects that directly benefit air quality, through reduced motor vehicle emissions.

More recently, the Transportation Authority has begun serving as the administrator of Proposition AA (Prop AA), a $10 annual vehicle registration fee on motor vehicles registered in San Francisco, which was passed by San Francisco voters in November 2010. In this role, the Transportation Authority oversees the Prop AA program and allocates funds to street repair and reconstruction, pedestrian safety, and transit reliability and mobility improvements projects.

The Transportation Authority Board consists of the eleven members of the San Francisco Board of Supervisors, who act as Transportation Authority Commissioners. Commissioner Aaron Peskin is Chair of the Transportation Authority Board. Commissioner Katy Tang is Vice Chair.

Mission Statement

The San Francisco County Transportation Authority’s mission is to make travel safer, healthier, and easier for all. We plan, fund, and deliver local and regional projects to improve travel choices for residents, commuters, and visitors throughout the city.



Prop K Administrator  

Prop K is the local sales tax for transportation approved by San Francisco voters in November 2003. The 30-year Expenditure Plan prioritizes $2.35 billion (in 2003 dollars) and leverages another $9 billion in federal, state, and local funds for transportation improvements.


Administer the tax. Allocate funds to eligible projects. Monitor and expedite the delivery of Prop K projects. Prepare the Strategic Plan to guide the timing of Prop K expenditures and maximize leveraging. Advance project delivery through debt issuance and funding strategy.

Congestion Management
Agency (CMA)

State legislation establishing Congestion Management Agencies was adopted in 1989. The Transportation Authority was designated as the CMA for San Francisco County in 1990.

  The Transportation Authority develops and administers the city’s Congestion Management Program. As the CMA, the Transportation Authority leverages state and federal transportation dollars to complement local Prop K and Prop AA revenues. The Transportation Authority also tracks transportation system performance to ensure that San Francisco gets good value for its transportation investments and prepares a long-range Countywide Transportation Plan to guide future investment decisions and to provide the basis for San Francisco’s input into the Bay Area’s Regional Transportation Plan.

Transportation Fund for Clean Air (TFCA) Program Manager  

Funds come from a $4 per year vehicle registration fee used for projects that help clean up the air by reducing motor vehicle emissions. The Transportation Authority was designated San Francisco program manager in 1992.


Prioritize projects for San Francisco’s local share of TFCA funds. Help local agencies compete for regional discretionary TFCA funds. Oversee implementation of TFCA projects in San Francisco.

Prop AA Administrator  

State legislation, adopted in 2009, enabled CMAs to establish up to a $10 countywide vehicle registration fee to fund transportation projects having a relationship or benefit to the people paying the fee. San Francisco voters approved Prop AA in November 2010, designating the Transportation Authority as the administrator of the $10 fee.


Administer the fee. Allocate funds to eligible projects. Monitor and expedite delivery of Prop AA projects. Prepare the Strategic Plan to guide the timing of Prop AA expenditures and maximize leveraging.

Treasure Island Mobility Management Agency (TIMMA)  

Designated Treasure Island Mobility Management Agency in 2014. State legislation, passed in 2008, enables TIMMA to implement congestion pricing on the island.


Plan for sustainable mobility on Treasure Island. Coordinate new ferry and regional bus service, on-island shuttle, bike share, and car share opportunities. Implement congestion pricing.