Cal. PUC § 30638

(a) The rates, fees, and charges for service or rights furnished, leased, or otherwise transferred pursuant to this part, including, but not limited to, station cost-sharing, connector fees, and land or air rights sales or leasing, shall be fixed by a vote of two-thirds of all of the members of the board and shall be reasonable. Insofar as practicable, the rates, fees, and charges shall be determined and fixed so as to result in revenue which will make the transit system self-supporting and shall be sufficient to accomplish all of the following:

(1) Pay the operating expenses of the district.

(2) Provide for repairs, maintenance, and depreciation of works owned or operated by the district.

(3) Provide for the purchase, lease, or acquisition of equipment under Article 3 (commencing with Section 30940) of Chapter 7.

(4) Provide for the payment of the interest and principal of the bonded debt, subject to the applicable provisions of this part authorizing the issuance and retirement of bonds.

(5) Provide for the payment of contracts, agreements, leases, equipment, trust certificates, and other legal liabilities assumed under Chapter 8 (commencing with Section 31000).

(b) After making any current allocations of funds required for the purposes prescribed by pargraphs (1) to (5), inclusive, of subdivision (a) and by the terms of any indebtedness incurred under Article 1 (commencing with Section 30900), Article 2 (commencing with Section 30930), and Article 5 (commencing with Section 30960) of Chapter 7, the board may provide funds for any purpose the board deems necessary and desirable to carry out the purposes of this part.

(c) This section does not constitute a covenant to the holders of any bonds or other evidences of indebtedness of the district unless the ordinance, resolution, or indenture providing for the issuance of those instruments so provides.