Senate committee substitute to the  3rd makes the following changes. 

Amends GS 20-4.01 by changing the definition of modified utility vehicle so that it is now defied as a motor vehicle: (1) manufactured for off-road use with equipment required by GS 20-121.1(2), except a vehicle identification number, and (2) with four wheels, an engine displacement greater than 2,400 cubic centimeters, an overall length of 142 inches or greater, an overall width of 58 inches or greater, an overall height of 70 inches or greater, a maximum speed capability of 40 miles per hour or greater, and does not require an operator or passenger to straddle a seat (was, a vehicle that is designed for off-road use and manufactured with safety equipment required by GS 20-121.1(2). Maintains the exclusion from the definition of all-terrain vehicles, golf carts, utility vehicles, and riding lawn mowers.

Amends GS 20-121.1 by adding that if a modified utility vehicle dos not have a vehicle identification number, upon application by the vehicle's owner, the Division of Motor Vehicles must assign such a number before registration. Makes a clarifying change.