Special vehicles refer to special vehicles that exceed the design vehicle limit in overall size and weight, and are specially designed or modified with fixed devices and equipment. Their main function is not motor vehicles for carrying people or goods.
Special vehicles generally have special signs or special models. Refers to the vehicles that undertake special duties and hang special vehicle number plates, install and use alarms and sign lamps. Such as ambulances, fire engines, police cars, engineering rescue vehicles, military surveillance vehicles, etc.