There are hereby created two separate funds, one to be known as the state highway fund and the other to be known as the state highway supplementary fund. All moneys paid into either of said funds shall be available immediately, without further appropriation, for the purposes of such fund as provided by law. Any sums paid into the state treasury, which by law belong to the state highway fund or to the state highway supplementary fund, shall be immediately placed by the state treasurer to the credit of the appropriate fund. Upon request of the commission or of the chief engineer, it is the duty of the state treasurer to report to the commission or to the chief engineer the amount of money on hand in each of said two funds and the amounts derived from each source from which each such fund is accumulated. All accounts and expenditures from each of said two funds shall be certified by the chief engineer and paid by the state treasurer upon warrants drawn by the controller. The controller is authorized as directed to draw warrants payable out of the specified fund upon such vouchers properly certified and audited. Nothing in this part 2 shall operate to alter the manner of the execution and issuance of transportation revenue anticipation notes provided in part 7 of article 4 of this title.