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Basically, a brake assist system monitors the driver’s use of the brake pedal, automatically sensing an attempt to stop the car as a result of panic.
It then generates very high braking power, even when the driver is only pressing lightly on the brake pedal. When this is used together with anti-lock braking systems, it results in faster and safer braking.
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Some road tests show that a driver needs up to 240 feet (73 meters) to stop a car going approximately 60 mph (100 km/h). In the same scenario, cars with brake assist were able to come to a complete stop in as little as 130 feet (40 meters).
Since it only takes one-fifth of a second to travel a car length at highway speeds, the superior speed with which the brake assist is able to react also accounts for its improved safety results over traditional braking systems.
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