625 ILCS 5/1-168.8: Recreational off-highway vehicle.

Any motorized off-highway device designed to travel primarily off-highway, 64 inches or less in width, having a manufacturer's dry weight of 2,000 pounds or less for gas-powered engines or 3,000 pounds or less for electric-powered engines, traveling on 4 or more non-highway tires, designed with a non-straddle seat and a steering wheel for steering control, except equipment such as lawnmowers.