Abstract: In a self-contained ride level control system for a motor vehicle, the accumulator pressure is controlled as follows: determination of the current pressure Ps(current) of the compressed air accumulator (4); definition of at least one level whereto the vehicle can be lifted or lowered; determination os the air volume required for lifting or lowering the motor vehicle from the current level and bringing it to a given level; determination of the subsequent accumulator pressure Ps(later) for reducing the current accumulator pressure Ps(current) if the motor vehicle is lifted from its current level up to the given level or determination of the subsequent accumulator pressure Ps(later) for increasing the current accumulator pressure Ps(current) if the motor vehicle has been lowered from the current level to the given level; filling the compressed air accumulator (4) with compressed air if the subsequent pressure Ps(later) is below a lower threshold value Ps (U) and emptying the compressed air accumulator if the sub

Abstract: The invention is directed to an electrically/electronically controllable braking system including: a brake actuating device 6, at least two brake circuits (2, 4) and two processors (8a, 8b; 10a, 10b) for each brake circuit (2, 4) for driving the actuators (12a to 12d) and for the control of further functions such as slip control functions. The processors (8a, 8b) of the rear brake control are joined in a rear brake control apparatus 16 and the processors (10a, 10b) of the front wheel brake control are joined in a front brake control apparatus 18. The allocations of the functions of the electric control apparatus for both brake circuits are optimized especially while considering reliability. The brake actuating device 6 outputs its actuating function via signal lines 7 to all processors (8a, 8b; 10a, 10b).