RTC §6051.8: (a) Except as provided by Section 6357.

(a) Except as provided by Section 6357.3, in addition to the taxes imposed by this part, for the privilege of selling tangible personal property at retail a tax is hereby imposed upon all retailers at the rate of 1.75 percent of the gross receipts of any retailer from the sale of all diesel fuel, as defined in Section 60022. (b) Except as provided by Section 6357.3, in addition to the taxes imposed by this part and by subdivision (a), commencing November 1, 2017, for the privilege of selling tangible personal property at retail a tax is hereby imposed upon all retailers at the rate of 4 percent of the gross receipts of any retailer from the sale of all diesel fuel, as defined in Section 60022, sold at retail in this state. (c) (1) Notwithstanding subdivision (b) of Section 7102, except as otherwise provided in paragraph (2), all of the revenues, less refunds, collected pursuant to this section shall be estimated by the State Board of Equalization, with the concurrence of the Department of Finance, and transferred quarterly to the Public Transportation Account in the State Transportation Fund for allocation under the State Transit Assistance Program pursuant to Section 99312.1 of the Public Utilities Code. (2) The revenues, less refunds, attributable to a rate of 0.5 percent of the 4-percent increase in the rate pursuant to subdivision (b), amounting to one-eighth of revenues from the increase in the rate under that subdivision, shall be estimated by the State Board of Equalization, with the concurrence of the Department of Finance, and transferred quarterly to the Public Transportation Account in the State Transportation Fund for allocation by the Transportation Agency to intercity rail and commuter rail purposes pursuant to Section 99312.3 of the Public Utilities Code.