This is the primary source of funding for Pinal County Public Works. HURF is made up of a variety of taxes and fees that are used to fund the state’s highway system. They include gas taxes, use fuel taxes, motor carrier taxes, vehicle license taxes, and vehicle registration fees. The state keeps a percentage of the fund for the construction and maintenance of the state highway system and distributes the balance to municipalities and counties. The funds are restricted and can only be used for transportation purposes.