Drawbar Trailer

SUPREME Drawbar Dolly Full Trailer is a self-supporting, unpowered trailer which has at least one axle at either end of the trailer. The front axle is connected to a drawbar and the axle pivots to provide steering, following the direction in which the drawbar is pulled. This is sometimes called a dolly.
The key differences between a semitrailer and a drawbar trailer are that a semitrailer does not have wheels at the front, it has a kingpin which fits inside a fifth-wheel or turntable coupling, and the front of the trailer is supported on the rear wheels of the prime mover.