Exempts from sales and use taxes motor vehicles and rolling stock used by common carriers

This bill exempts certain maintenance and repair services for motor vehicles and railroad rolling stock from sales and use taxes. It directly affects common carriers (like trucking and rail companies) by reducing their tax burden on vehicle upkeep. The key provision adds new tax exemptions for parts and services related to motor vehicles and railroad equipment, while explicitly excluding fuel, electricity, and energy services from these exemptions. The policy change simplifies tax treatment for transportation infrastructure maintenance without altering broader tax rates.