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Threshold braking or limit braking is a driving technique most commonly used not only in motor racing, but also practiced in road vehicles to slow a vehicle at the maximum rate using the brakes. [1] The technique involves the driver controlling the brake pedal (or lever) pressure to maximize the braking force developed by the tires .
Braking distance refers to the distance a vehicle will travel from the point when its brakes are fully applied to when it comes to a complete stop. It is primarily affected by the original speed of the vehicle and the coefficient of friction between the tires and the road surface, [Note 1] and negligibly by the tires' rolling resistance and vehicle's air drag.
Threshold braking maintains a steady braking force with slight (10-20%) slip, around or just below the point of maximum tire grip force. Cadence braking accepts that holding the threshold braking limit is exceptionally hard, and relies on manual manipulation of braking force to rapidly go just above and below the skid point, essentially ...
[72] [73] [3] In most cars, fully applied brakes are easily capable of stopping the car while the accelerator pedal is also fully applied. [17] " Pumping the brakes " is strongly discouraged during an unintended acceleration event, as this can lead to a loss of braking power . [ 74 ]
As the towing vehicle brakes, the trailer travels forward, sliding the mechanism, for a distance before trailer braking begins. The speed difference & inertia built up by now results in the trailer brakes being rapidly & progressively applied ever harder, until trailer speed drops to below towing vehicle speed
A compression release brake (also known as a Jacobs brake or "jake brake"), is the type of brake most commonly confused with real engine braking; it is used mainly in large diesel trucks and works by opening the exhaust valves at the top of the compression stroke, so the large amount of energy stored in that compressed air is not returned to ...
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Emergency Assist is a driver assistance system that monitors driver behavior by observing delays between the use of the accelerator and the brake; once a preset threshold of time has been exceeded the system will take control of the vehicle in order to bring it to a safe stop.