N.J. Admin. Code § 13:82-7.2
The following words and terms, as used in this subchapter, shall have the following meanings, unless the context clearly indicates otherwise.
"All-terrain vehicle" means a motor vehicle, designed to travel over all terrain, of a type possessing between three and six rubber tires and powered by a gasoline engine not exceeding 400 cubic centimeters, but shall not include golfcarts.
"Snowmobile" means any motor vehicle designed primarily to travel over ice or snow, of a type which uses sled-type runners, skis, and endless belt, tread, cleats, or any combination of those or other similar means of contact with the surface upon which is operated, but does not include any farm tractor, highway, or other construction equipment or any military vehicle.
N.J. Admin. Code § 13:82-7.2