The hydraulic brake assist system from Volkswagen comes to the driver’s aid in emergency or panic braking situations. The brake assist ascertains from the speed at which the brake pedal is depressed that the driver requires full braking power, and automatically boosts the brake pressure up to the ABS control threshold for as long as the driver keeps the brake pedal pressed down. If the driver subsequently eases off the brake pedal, the system will reduce the brake pressure again to match the brake pedal’s position.
This function can substantially shorten the vehicle’s stopping distance. System operation is barely perceptible to the driver.