METHOD AND CONTROL UNIT FOR OPERATING A TRACTOR-TRAILER COMBINATION MADE UP OF A TOWING VEHICLE AND A TRAILER INCLUDING AN OVERRUN BRAKE

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.