Towing vehicle for a trailer or semitrailer and method for assisting a driver in maneuvering the rear of a towing vehicle

Towing vehicle for a trailer (12) or semitrailer, wherein by means of a steering handle (16), a steering angle (20) at least one steerable wheel of the tractor vehicle (10) can be predetermined, in dependence on the steering angle (20) an additional steering angle is adjustable, the additional steering angle of a rear axle of the towing vehicle (10) is adjustable, characterized, in that the additional steering angle is selectable using a selection device (30) as a function of at least one signal detection means (32) and / or an evaluation device (42) and / or the Betatigtsein at least one input device (44) consists of two categories, and wherein the two categories the additional steering angle as - to the predetermined steering angle (20) in opposite directions assist steering angle for assisting a driver in maneuvering the rear of the towing vehicle (10) by reducing the from the towing vehicle (10) as claimed lateral Manovrierraums and as - stabilizing steering angle (28) for stabilizing a reverse travel of the towing vehicle (10) with the trailer (12) or semi-trailer include.