Does the last eight wheels belong to semi trailers?
Yes, semi trailersA semi-trailer is a trailer that is placed behind the center of gravity of the vehicle (when the vehicle is uniformly loaded) and equipped with a coupling device that can transfer horizontal and vertical forces to the tractor.
Semi trailers are generally three axle semi trailers, and their types are divided into eleven meters, warehouses, semi trailers, thirteen meters hurdles, low flat, semi trailers and many other species. The utility model relates to a heavy transportation vehicle which is connected with a semi-trailer head through a traction pin.
