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INTRODUCTION
Brake assist senses emergency braking by detecting the speed at which the driver presses the brake pedal and immediately applying all available power boosts .brake assistance can potentially reduce overall stopping distance by eliminating the delay caused by a common human tendency of braking hard enough or soon enough.

HISTORY
Mercedes originally invented this system in the 1990’s to shorten emergency stopping distances takes over if a driver applies the brakes quickly but too gently in a critical situation. The system automatically develops maximum brake boost with split-second speed, so reducing the stopping distance by a significant margin.
Working

Driver does not step forcefully enough on the brake in an emergency. As a result, only a small amount of brake force is generated.
The pedal effort of this type of driver might weaken as time passes, causing a reduction of braking force.
Based on how quickly the brake pedal is depressed, brake assist assesses the intention of the driver to apply emergency braking and increases the brake force.
After the brake assist operation, if the driver intentionally releases the brake pedal, the assist operation reduces the amount of force simultaneously.
Comparison

ABS and Brake Assist
[Vehicles not Equipped with ABS]
Tires lock under sudden braking, vehicle body orientation becomes unstable, and steering wheel inputs cannot control the vehicle.
[Vehicles Equipped with ABS]
Tires do not lock under sudden braking, vehicle body orientation is as stable as possible, and steering wheel inputs can help avoid an obstacle.

Brake Assist Systems
Electronic Brake Assist
Mechanical Brake Assist
Hydraulic Brake Assist

Electronic Brake Assist BA
Mechanical Brake Assist MBA
Hydraulic Brake Assist HBA
Brake Assist PLUS: Radar sensors for early accident detection
Radar sensors for early accident detection
The future: from Brake Assist PLUS to the PRE-SAFE braking system


Mercedes-Benz combines Brake Assist PLUS with the equally unique occupant protection system PRE-SAFE®, which offers even more safety functions on board the new S-Class. PRE-SAFE® recognizes potential accident situations as they arise:
Conclusion
Innovative technology
Impressive proof of the effectiveness of Brake Assist
Also be developed into an autonomous braking system
Less accidents hence less fatalities
Allows the driver feel safer in his car