(a) There is hereby created and established in the State Treasury a special revolving fund to be known and designated as the "Motor Fuel General Tax Administration Fund." The commissioner is authorized to retain one half of one percent of the tax collected pursuant to the provisions of this article: Provided, That in any fiscal year in which the tax collected pursuant to the provisions of this article exceed $300 million, the commissioner is authorized to retain an additional one percent of the tax in excess of the $300 million that is collected. The amounts retained by the commissioner under this subsection shall be deposited in the motor fuel general tax administration fund and may be expended for the general administration of taxes imposed by this chapter.

(b) All remaining tax collected under the provisions of this article after deducting the amount of any refunds lawfully paid shall be paid into the state road fund and used only for the purpose of construction, reconstruction, maintenance and repair of highways, matching of federal moneys available for highway purposes and payment of the interest and sinking fund obligations on state bonds issued for highway purposes.

(c) Not less than monthly, beginning July 1, 2007, the Commissioner of Highways shall report to the Joint Committee on Government and Finance or its designated subcommittee on the amount of tax paid into the state road fund under subsection (b) of this section, any matching federal funds, and all expenditures therefrom.