B62D53/04—Tractor-trailer combinations; Road trains comprising a vehicle carrying an essential part of the other vehicle's load by having supporting means for the front or rear part of the other vehicle
B62D53/06—Semi-trailers
B62D53/068—Semi-trailers having devices to equalise or modify the load between the fifth wheel and the rear wheels
Attelage a deux points d'ancrage et remorque comportant deux mecanismes de fixation prolonges chacun d'un timon, partie raidisseur du chassis de la remorque laquelle est dotee d'une roue jockey.