There is hereby created, as a local area planning agency and not as a part of the executive branch of the state government, the Metropolitan Transportation Commission to provide comprehensive regional transportation planning for the region comprised of the City and County of San Francisco and the Counties of Alameda, Contra Costa, Marin, Napa, San Mateo, Santa Clara, Solano, and Sonoma.

As used in this title, “region” means the region described in this section.