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Traction control systems (TCS), using brake application of the driven wheels to control the slip, place specific requirements on the master cylinder. These requirements appear in the case of brake fluid suction through the master cylinder and by braking - especially with ABS - during an active traction control mode. To meet the additional requirements, a new tandem master cylinder has been designed. The major characteristics are high pressure with-standing central valves with little flow resistance.

The job of the EBD as a sub-system of the ABS system is to control the effective adhesion utilization by the rear wheels. The pressure of the rear wheels is approximated to the ideal brake force distribution in a partial braking operation. To do so, the conventional brake design is modified in the direction of rear axle overbraking, and the components of the ABS are used. EBD reduces the strain on the hydraulic brake force proportioning valve in the vehicle EBD optimizes the brake design with regard to: adhesion utilization driving stability wear temperature stress pedal force