Amends the definition of modified utility vehicle in GS 20-4.01, which is a cognate of passenger vehicle in GS Chapter 20, to no longer require an engine displacement greater than 2,400 cubic centimeters and to require an overall length of 110 inches or greater rather than 142 inches or greater.

Amends GS 20-121.1 to explicitly prohibit modified utility vehicles from operating on any street or highway having four or more lanes regardless of the posted speed limit. Separates the required equipment of a modified utility vehicle from that of mini-trucks and low-speed vehicles. No longer requires modified utility vehicles to have a windshield or windshield wipers. Adds a new provision to require the operator and all passengers of a modified utility vehicle to wear safety helmets with a retention strap compliant with federal standards if the vehicle is not equipped with a windshield and windshield wipers. Adds a new qualification to the Department of Transportation's statutory authority to prohibit the operation of low-speed vehicles, mini-trucks, or modified utility vehicles on any road or highway if it determines that the prohibition is necessary in the interest of safety, to provide that the authority is granted notwithstanding the provisions of any other subdivision of the statute. 

Effective October 1, 2021.