Scope expansion of vehicles requiring an overweight vehicle special permit

This bill expands the definition of road construction materials to include supplies and equipment used in building real property, thereby broadening the scope of vehicles that require special overweight permits. It allows road authorities to issue annual permits for six-axle vehicles hauling these materials up to 90,000 pounds and for seven-axle vehicles up to 97,000 pounds, with associated fees of $300 and $500 respectively. Additionally, the legislation prevents local governments from adopting ordinances that restrict aggregate mining or production facilities once a permit application is submitted or an environmental impact study is underway, ensuring local rules do not exceed state or federal conditions. The bill also mandates a legislative audit of how counties collect and spend aggregate production taxes and appropriates $250,000 to update the state's inventory of aggregate resources.