A method is proposed for stabilizing a tractor-trailer combination comprising a tractor vehicle and a trailer. The tractor vehicle has front and rear axle steering. The distinguishing feature of the method is that while driving, and braking while rounding a curved trajectory, the steering angle of the wheels on the rear axle is set to be in the same direction as the steering angle of the wheels on the front axle in order to stabilize the tractor-trailer combination.

A method for operating a tractor-trailer combination made up of a towing vehicle and a trailer including an overrun brake. A total weight of the tractor-trailer combination is ascertained using a drive torque of the towing vehicle and an acceleration of the tractor-trailer combination. A trailer braking effect of the overrun brake is determined using a deceleration of the tractor-trailer combination, the total weight, and a vehicle braking effect of the towing vehicle without the trailer. A brake force distribution of the towing vehicle is set using the trailer braking effect.

A method for operating a tractor-trailer combination made up of a towing vehicle and a trailer including an overrun brake. A total weight of the tractor-trailer combination is ascertained using a drive torque of the towing vehicle and an acceleration of the tractor-trailer combination. A trailer braking effect of the overrun brake is determined using a deceleration of the tractor-trailer combination, the total weight, and a vehicle braking effect of the towing vehicle without the trailer. A brake force distribution of the towing vehicle is set using the trailer braking effect.

A parking brake valve device for controlling a spring accumulator parking brake in an electro-pneumatic brake system includes a compressed air inlet configured to connect to a compressed air supply. The parking brake valve device also includes an electro-pneumatic handbrake (EPH) valve configuration and a parking brake control outlet configured to connect a spring accumulator parking brake, and a trailer control valve (TCV) device configured to control a trailer control outlet and a trailer supply outlet for a trailer brake system. The parking brake valve device further includes a multiplex switching device connected to the compressed air inlet and having electro-pneumatic switching valves configured to be controlled via electrical control signals for selective compressed air supply and venting of the EPH valve configuration and/or the TCV device.

A brake system for a transportation vehicle, a transportation vehicle having a brake system, and a method for operating a brake system. The brake system has two control units, wherein the respective control unit actuates a respective brake circuit of the brake system, which includes two of four service brakes and one of two electric parking brakes of the brake system. In response to a defect in one of the brake circuits, the control unit of the other brake circuit actuates the respective brakes of the other brake circuit, to carry out trailer combination stabilization of a trailer combination having the transportation vehicle and a trailer coupled to the transportation vehicle; and/or to steer the transportation vehicle in the case of a defect in a steering system of the transportation vehicle based on a steering command of a control device for autonomous driving.

A brake system for a transportation vehicle, a transportation vehicle having a brake system, and a method for operating a brake system. The brake system has two control units, wherein the respective control unit actuates a respective brake circuit of the brake system, which includes two of four service brakes and one of two electric parking brakes of the brake system. In response to a defect in one of the brake circuits, the control unit of the other brake circuit actuates the respective brakes of the other brake circuit, to carry out trailer combination stabilization of a trailer combination having the transportation vehicle and a trailer coupled to the transportation vehicle; and/or to steer the transportation vehicle in the case of a defect in a steering system of the transportation vehicle based on a steering command of a control device for autonomous driving.

A drawbar arrangement for a dolly vehicle, the drawbar arrangement comprising a control unit and an adjustable drawbar attached to the dolly vehicle, the adjustable drawbar comprising a front coupling element arranged to be adjusted vertically with respect to a ground plane by the control unit, wherein the control unit is arranged to determine a vertical coupling load associated with the front coupling element, and wherein the control unit is arranged to set a desired vertical coupling load associated with the front coupling element by vertically adjusting the front coupling element when coupled to a towing vehicle unit.

A drawbar arrangement for a dolly vehicle, the drawbar arrangement comprising a control unit and an adjustable drawbar attached to the dolly vehicle, the adjustable drawbar comprising a front coupling element arranged to be adjusted vertically with respect to a ground plane by the control unit, wherein the control unit is arranged to determine a vertical coupling load associated with the front coupling element, and wherein the control unit is arranged to set a desired vertical coupling load associated with the front coupling element by vertically adjusting the front coupling element when coupled to a towing vehicle unit.

A towable crash-attenuating vehicle is shown having a frame; at least two axles coupled to the frame, each of the axles having wheels attached thereto; a ballast coupled to the frame; deflection shields coupled to the right and left sides of the frame, wherein the deflection shields cover the frame and a majority of the wheels on each side of the vehicle; a tow connection coupled to the front of the frame; an impact attenuator coupled to the rear of the frame; wherein the vehicle is provided with a brake system, and wherein the vehicle is provided with an mechanism for locking and unlocking the brake system.

An off-road vehicle includes a driveline, a control system, and a braking system. The driveline provides driveline power and driveline brake power to a first tractive assembly and/or a second tractive assembly. The control system stores vehicle information, determines driving instructions based on environment data, and determines speed references for tractive elements of the first and second tractive assemblies based on the driving instructions and the vehicle information. The braking system includes brakes and a braking subsystem. The brake subsystem operates the brakes to provide brake power to one or more components of the first and/or second tractive assemblies. The brake controller controls the brakes to selectively provide the brake power and the control system controls the driveline to selectively provide the driveline power and the driveline brake power based on current speeds of the tractive elements and the speed references to accommodate the driving instructions.