Specialty vehicles a include which cars

Special vehicles are divided into four subcategories, special vehicles, including tanker trucks, steam tanker, liquid tanker, refrigerated trucks; special vehicles, including for towing, clearing, sweeping, cleaning, lifting, loading and unloading, lifting, mixing, digging, bulldozing, and other kinds of special motor vehicles; special vehicles, including a fixed special instrumentation to engage in professional work, monitoring, firefighting, medical care, television broadcasting, and other kinds of special motor vehicles; special vehicles Four refers to the container tractor.