The main mission, and research question of SHIFT is how to develop, test and validate new type of kingpin coupling used to link the semitrailers to other vehicle units which would enable to measure mutual forces between the vehicle units. This fundamentally new functionality would enable easier and robust control of E-Trailers (trailers with electrically driven axle(s) which is also enabling energy recuperation) on the basis of measured reaction force in the coupling, without a need of difficult communication to conventional hauling units (trucks and tractors) which is needed nowadays.