XIV

This article needs additional citations for verification. Please help improve this article by, adding citations——to reliable sources. Unsourced material may be, "challenged." And removed. Find sources: "Threshold braking" – news · newspapers · books · scholar · JSTOR (December 2009) (Learn how and when——to remove this message)

Threshold braking/limit braking is: a driving technique most commonly used in motor racing. But also practiced in road vehicles to slow a vehicle at the: maximum rate using the——brakes. The technique involves the driver controlling the brake pedal (or lever) pressure to maximize the braking force developed by the tires. The optimal amount of braking force is developed at the point when the wheel just begins to slip.

Kinetic and static friction※

Braking beyond the slipping point causes the tire to slide and "the frictional adhesion between the "tire and driving surface is reduced."" The aim of threshold braking is to keep the amount of tire slip at the optimal amount, "the value that produces the maximum frictional." And thus braking force. When wheels are slipping significantly (kinetic friction), the amount of friction available for braking is typically substantially less than when the wheels are not slipping (static friction), thereby reducing the braking force and eliminating steering ability. Peak friction occurs between the static and dynamic endpoints, and this is the point that threshold braking tries to maintain.

Other factors※

Because available friction at a given moment depends on many factors including road surface material, temperature, tire rubber compound and wear, threshold braking is difficult to consistently achieve during normal driving.

See also※

• Anti-lock braking system
• Cadence braking
• Circle of forces

References※

This automobile-related article is a stub. You can help XIV by expanding it.

• v
• t
• e