Cal. Public Utilities Code § 125105

The board shall: (a) Acquire, construct, maintain, and operate (or let a contract to operate) public transit systems and related facilities. (b) Adopt an annual budget and fix the compensation of the district’s officers and employees. (c) Adopt an administrative code, by ordinance, that prescribes the powers and duties of district officers, the method of appointment of district employees, and methods, procedures, and systems of operation and management of the district. (d) Cause a postaudit of the financial transactions and records of the district to be made at least annually by a certified public accountant. (e) Appoint advisory commissions as it deems necessary. (f) Do any and all things necessary to carry out the purposes of this division, including, but not limited to, adopting all ordinances and making all rules and regulations proper or necessary to regulate the use, operation, and maintenance of the district’s property and facilities, including its public transit systems and related transportation facilities and services operating within its area of jurisdiction and those areas beyond its jurisdiction served by the district pursuant to contract or memorandum of agreement with another transit agency, and to carry into effect the powers granted to the district.