Flat cars belong to special vehicles. Basically, the training of special cars is arranged in a unified driving school, and there is no school that specializes in training such cars.

12 flat car was produced in 1956, with a load of 60t. Mass production of N 16 flat cars began from 1966. The characteristics of this type of car are: 70mm thick wooden floor is spread on the underframe, and all-steel welded movable end panels are installed at both ends of the car, which overcomes the weakness of insufficient strength of wooden end panels, and can be used as a crossing board for motor vehicles to load and unload themselves after being put down.