the vehicle movement dynamics controller 10 of the brake system is programmed as a processor in such a way that it can also assume the function of a clutch controller since all the measurement variables which are relevant for driving and operating states are fed to it for example the brake request signal of the driver line 23 or the rotational speed signals of the wheel speed sensors 34 u2014 which are provided again with the corresponding indices in fig2 u2014 via the line 33 further variables are the steering angle acceleration values etc all these signals are generated in the vehicle movement dynamics controller 10 to form control variables for the brake forces or the brake pressures and for the torque which is transmitted by the clutch 6 these control signals 39 are fed to the control group 11 which is designated in its entirety by 11 the control group 11 is composed of an electronic control group 40 which is of modular design and in which the actuation signals 39 are converted into switching currents which are fed via lines 41 into a valve group 43 which is also of modular design the modular design consists in the fact that each module is assigned to.