special vehicle ii: all kinds of special motor vehicles used for traction, obstacle clearing, sweeping, cleaning, lifting, loading and unloading, lifting, mixing, digging and bulldozing;
Special vehicles III: all kinds of professional motor vehicles equipped with fixed special instruments and equipment for monitoring, fire fighting, medical treatment, television broadcasting and other professional work;
special vehicle iv: container tractor.
these are four types of special vehicles listed in the new compulsory insurance. among them, there are special motor vehicles for towing in the second special vehicle, but compared with the latter categories, they are obviously different from the ordinary operating vehicles that we call towing trailers every day. What's the difference?