Generally, road trucks are modified to transport and complete various operations. The compartments of general special vehicles used for transportation are box type, tank type, self-unloading type, warehouse type, grid type and truss type, etc., and can transport goods of different properties, states and requirements, such as: liquid, gas and bulk Goods in powder or granular solid state; animals such as livestock, poultry, and fresh fish; goods that require heat preservation, preservation, and refrigeration; highly toxic, flammable, and explosive dangerous goods, etc. In countries with a large production of cars, there are also special vehicles for double-decker carriages that transport 8 to 10 cars at a time.
Another general special-purpose vehicle is engaged in specialized operations. In order to achieve different purposes, this kind of car is equipped with corresponding operating equipment on the chassis, such as sales trucks, garbage trucks, sweepers, sprinklers, environmental protection monitoring vehicles, cement mixer trucks, dump trucks, sewage suction trucks, and fecal suction trucks. , aerial work vehicles, refrigerated vehicles, lifting transport vehicles, advertising vehicles, power station vehicles, repair vehicles, exploration vehicles, oil layer fracturing vehicles, scientific investigation vehicles, police vehicles, fire engines, aircraft tractors, refueling vehicles, charging vehicles, air compressor vehicles, ambulances, medical facility vehicles, library vehicles, TV relay vehicles, postal and telecommunications vehicles, and snow removal vehicles, etc.