Cal. Public Utilities Code § 131108

(a) The board of supervisors, as part of the ballot proposition to approve the imposition of a retail transactions and use tax, may seek authorization to issue bonds as may be provided for in the adopted county transportation expenditure plan payable solely from the proceeds of the tax. (b) The maximum bonded indebtedness which may be authorized shall be an amount equal to the sum of the principal of, and interest on, the bonds, but not to exceed the estimated proceeds of the tax, as determined by the plan. (c) The proposition shall set forth the actual percent of the tax. (d) The proposition shall set forth the duration of the tax if the plan specifies a time limit. (e) The proposition shall set forth the amount of bonds, if any, payable from the proceeds of the tax. (f) The proposition shall set forth either a county transportation authority or the commission as the agency imposing the tax. (g) For an entity formed after 1978 which does not have an appropriations limit, the proposition shall include a limit pursuant to Article XIII B of the Constitution. (h) The sample ballot to be mailed to the voters, pursuant to Section 13303 of the Elections Code, shall be the full proposition, as set forth in the ordinance calling the election, and the voter information handbook shall include the entire adopted county transportation expenditure plan.