Cal. Sts. & High. Code § 30950

For the purposes of this chapter, Chapter 4 (commencing with Section 30910), and Chapter 4.5 (commencing with Section 31000), “the authority” is the Bay Area Toll Authority, which is hereby created. The authority is a public instrumentality governed by the same board as that governing the Metropolitan Transportation Commission. The authority is, however, a separate entity from the Metropolitan Transportation Commission.