Abstract: The invention relates to a semitrailer (1) comprising devices (6) for shifting a load, such as a container (9), to the support of the trailer (1) and away from the support thereof; as well as devices (3) for shifting the bogie (2) in the lengthwise direction of the trailer. According to the invention, the trailer (1) comprises devices (10; 12) for raising and lowering both the front end (1a) and rear end (1b) of the trailer. By employing the said devices, the front and rear ends of the trailer can be raised and lowered irrespective of each other in order to load and unload the trailer.