Special vehicles refers to the outside dimensions, weight and other aspects of more than the design of the vehicle limits and special purpose vehicles, by special or specially modified, equipped with fixed devices and equipment, the main function is not used for the carriage of people or cargo motor vehicles.
Specialty vehicles generally have special signs or special models. Refers to undertake special duties and hang special vehicle license plate, installation and use of alarms and sign lamps and lanterns of the vehicle. Such as ambulances, fire engines, police cars, engineering rescue vehicles, military supervision vehicles.