Tilly Chang

Executive Director

San Francisco County Transportation Authority

San Francisco Director

Tilly Chang serves as Executive Director of the San Francisco County Transportation Authority. The Transportation Authority’s mission is to make travel safer, healthier, and easier for all. The agency plans, funds and delivers local and regional projects to improve travel choices for residents, commuters, and visitors throughout the city.


Ms. Chang has 27 years of experience, including 17 years with the Transportation Authority where she previously served as the agency's Deputy Director for Planning. She serves on the Boards of the Intelligent Transportation Society of America, the California Transportation Foundation, SPUR, and Self-Help for the Elderly. Ms. Chang is an alternate on the Transbay Joint Powers Authority Board of Directors, Co-chair of ITSA's Smart Infrastructure Task Force, and Vice-Chair of the California Self-Help Counties Coalition.