Tilly Chang
San Francisco County Transportation Authority
Executive Director
Tilly Chang serves as the Executive Director at the San Francisco County Transportation Authority. The Transportation Authority administers Prop K, the city’s half-cent transportation sales tax program as well as the Prop AA vehicle registration fee. The agency also serves as the county-wide Congestion Management Agency which coordinates funding and transportation investment for San Francisco’s multi-modal transportation system. The agency is governed by the 11 members of the Board of Supervisors, acting as the Transporation Authority Board of Commissioners.