A sliding cam system for a variable valve train of an internal combustion engine of a motor vehicle, in particular a commercial vehicle, comprising: a camshaft; a cam carrier which is arranged on the camshaft fixedly so as to rotate with it and axially displaceably between a first axial position and a second axial position, and comprises a first cam, a second cam and a first engagement track for the axial displacement of the cam carrier; a cam follower which is operatively connected to the first cam in the first axial position of the cam carrier and is operatively connected to the second cam in the second axial position of the cam carrier; and a first actuator which comprises an element which can be retracted and extended, in particular a pin, for engaging into the first engagement track for the axial displacement of the cam carrier; the first cam and the second cam being arranged offset with respect to one another along a longitudinal axis of the camshaft; the first cam comprising a base circle region and a valve lift region with a limiting section which adjoins the base circle region of the first cam; the second cam comprising a base circle region and a valve lift region with a limiting section which adjoins the base circle region of the second cam; the limiting section of the first cam and the limiting section of the second cam being of identical configuration and being arranged at an identical circumferential position about the longitudinal axis of the camshaft; and the first actuator, the cam follower and the first engagement track being arranged and configured in such a way that an axial displacement of the cam carrier can be carried out while the cam follower is operatively connected to the limiting section of the first cam and/or the limiting section of the second cam characterized in that the first engagement track comprises a cross-sectional constriction for the reduction of the play between the first engagement track and that element of the first actuator which can be retracted and extended during the engagement, which cross-sectional constriction is arranged in such a way that the reduction of the play takes place before the cam follower passes into an operative connection with the limiting section of the first cam or the limiting section of the second cam. a camshaft; a cam carrier which is arranged on the camshaft fixedly so as to rotate with it and axially displaceably between a first axial position and a second axial position, and comprises a first cam, a second cam and a first engagement track for the axial displacement of the cam carrier; a cam follower which is operatively connected to the first cam in the first axial position of the cam carrier and is operatively connected to the second cam in the second axial position of the cam carrier; and a first actuator which comprises an element which can be retracted and extended, in particular a pin, for engaging into the first engagement track for the axial displacement of the cam carrier; the first cam and the second cam being arranged offset with respect to one another along a longitudinal axis of the camshaft; the first cam comprising a base circle region and a valve lift region with a limiting section which adjoins the base circle region of the first cam; the second cam comprising a base circle region and a valve lift region with a limiting section which adjoins the base circle region of the second cam; the limiting section of the first cam and the limiting section of the second cam being of identical configuration and being arranged at an identical circumferential position about the longitudinal axis of the camshaft; and the first actuator, the cam follower and the first engagement track being arranged and configured in such a way that an axial displacement of the cam carrier can be carried out while the cam follower is operatively connected to the limiting section of the first cam and/or the limiting section of the second cam