Method for increasing operating safety of road semi-trailer units

摘要

The present invention is characterized in that the semi-trailer coupling, functioning as a connecting part of a tractor and the semi-trailer, is shiftable and enables during drive in curve the transfer to the turning side of the application point of the force vertical component loading the tractor with a portion of the semi-trailer weight and thus reduction of effects of centrifugal force causing in extreme cases turn over of the semi-trailer unit.