Both principal and interest on the bonds issued for the purposes of RCW 47.02.120
shall be payable from the highway bond retirement fund. The state finance committee may provide that a special account be created in the fund to facilitate payment of the principal and interest. The state finance committee shall, on or before June 30th of each year, certify to the state treasurer the amount required for principal and interest on the bonds in accordance with the bond proceedings. The state treasurer shall withdraw revenues from the motor vehicle fund and deposit in the highway bond retirement fund, or a special account in the fund, such amounts, and at such times, as are required by the bond proceedings.
Any funds required for bond retirement or interest on the bonds authorized by RCW 47.02.120
shall be taken from that portion of the motor vehicle fund that results from the imposition of excise taxes on motor vehicle and special fuels and vehicle-related fees and that is distributed to the state under RCW 46.68.130
. Funds required shall never constitute a charge against any other allocations of motor vehicle fuel and special fuel tax revenues and vehicle-related fees to the state, counties, cities, and towns unless the amount arising from excise taxes on motor vehicle and special fuels and vehicle-related fees distributed to the state under RCW 46.68.130
proves insufficient to meet the requirements for bond retirement or interest on any such bonds.