Vehicles dangerous whether heavy or light ...

However, examples of heavy vehicles include (do not think movie) trailers, tippers, mixers, lorries, container prime movers, cranes, coaches, bulk concrete carriers, as well as buses, etc.

Any vehicle such as a "big" car can also qualify as a heavy vehicle, depending on how heavy or fat it is or becomes?

Actually can also include Elephants (esp if got human handler and carrying cargo) should one ever cross across them,