In this chapter, the following terms have the meanings indicated. Terms Defined. “GVWR” means gross vehicle weight rating. “Highway-use vehicle” means all vehicles that are operated upon the highways of this State, except special mobile equipment not designed to move with the normal flow of traffic. “Tire stud” means a pin made of a material having a hardness factor approximating tungsten carbide surrounded by a casing equipped with a flanging arrangement designed to retain the assembly into premolded holes in the tire tread surface.