The Metropolitan Transportation Commission (MTC) is the government agency responsible for regional transportation planning and financing in the San Francisco Bay Area. It was created in 1970 by the State of California, with support from the Bay Area Council, to coordinate transportation services in the Bay Area's nine counties: Alameda, Contra Costa, Marin, Napa, San Francisco, San Mateo, Santa Clara, Solano, and Sonoma.
MTC is designated a regional transportation planning agency (RTPA) by the State of California and a metropolitan planning organization (MPO) by the federal government. MTC is not the Bay Area's council of governments (COG); the Association of Bay Area Governments (ABAG) holds that role.
MTC administers state-provided money through the Transportation Development Act (TDA) and has decision-making authority over the State Transportation Improvement Program (STIP). MTC administers federal funding through various grant programs, including the Transportation for Livable Communities (TLC) Program, Low Income Flexible Transportation (LIFT) Program, and Innovative Climate Grants Program.
MTC has overseen administration of toll revenue collected on the seven State-owned bridges in the Bay Area through the Bay Area Toll Authority (BATA) since 2005. From 1997 through 2004, BATA administered only a portion of the toll revenue.