Abstract: A motorized road train includes a lead vehicle and at least one follower vehicle which are hitched to one another, and a CAN communication link linking the vehicles in the train. Each of the vehicles includes a rear axle, a front, steering axle, and electric steering control system including a steering rack, an actuator which acts on the angular orientation of the front, steering axle and a controller which drives the actuator. The controllers of the vehicles are parameterized to generate angular orientation instructions for the front, steering axle of the or each follower vehicle. Each of the vehicles is equipped both with an orientation sensor for determining the angle of the wheels of the front, steering axle and with an angular hitching sensor for determining the yaw angular orientation of the hitch relative to the chassis of the vehicle.

Abstract: The drawbar comprises a main cylinder with a moving rod equipped with a coupling ring for coupling same to a second vehicle. The drawbar comprises a latching device with safety ratchet which is automatically activated by latching in the event of failure of said main cylinder, in order to prevent the exit of the moving rod. The drawbar is mounted to pivot with respect to the road vehicle to which it is fitted and further comprises an immobilisation device provided to prevent any pivoting of the drawbar when the movable rod of said drawbar is in the retracted position.

Abstract: The drawbar attached to the second road vehicle comprises a coupling eye at its end, while the crossbar attached to the first road vehicle comprises a drawbar coupling intended to accept the coupling eye of the first road vehicle that locks when the two road vehicles are coupled. An automatic locking mechanism is provided to lock the coupling eye to the drawbar coupling automatically when it enters the drawbar coupling once the coupling eye and the drawbar coupling have been brought closer together.

Abstract: A coupling device includes a hitch yoke secured to a first road vehicle, and a drawbar secured to a second road vehicle. The coupling device also includes roll travel device in the drawbar for the roll travel of one vehicle relative to the other and a yaw travel device in the drawbar for the yaw travel of one vehicle relative to the other. It further includes a first pitch travel device provided such that it is secured to the hitch yoke for the pitch travel of the first road vehicle relative to the hitch yoke and a second pitch travel device in the drawbar for the pitch travel of the second road vehicle relative to the distal end of the drawbar, said second pitch travel device being separate from the first one.