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What is a Service Brake?

2 Answers

VonGiselle

07/23/25 8:47pm

Service Brake: Commonly refers to the foot brake or hand brake of a car, colloquially known as the brake. The following is a functional classification of the braking system: 1. Service Brake System: Operated by the driver using the foot, hence also known as the foot brake system. Its function is to decelerate a moving car or bring it to a stop within the shortest possible distance. 2. Parking Brake System: Operated by the driver using the hand, hence also known as the hand brake system. Its function is to keep a car that has already stopped on various road surfaces stationary. 3. Secondary Brake System: A set of devices that ensures the car can still decelerate or stop in case the service brake system fails. Brake regulations in many countries require cars to be equipped with a secondary brake system. 4. Auxiliary Brake System: Used in cars frequently driven in mountainous areas and certain special-purpose vehicles to enhance driving safety and reduce the decline in the performance of the service brake system and brake wear, helping to stabilize the speed when going downhill.

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Kim

08/10/25 6:39pm

The service brake is the pedal we usually step on while driving. Having driven for over 30 years, I know it's primarily responsible for slowing down or stopping the vehicle during motion, unlike the parking brake which is used when stationary. Simply put, when you press the pedal, the hydraulic system pushes the brake pads against the brake discs, using friction to slow the wheels. Once on the highway, I encountered a sudden situation ahead and avoided a major accident solely by quick braking reflexes, which deeply impressed upon me its importance. Regular maintenance is crucial – like replacing excessively worn brake pads that cause squealing or increased stopping distance, and changing brake fluid to prevent aging from affecting performance. Light braking in rain or downhill prevents skidding – safety is no trivial matter. Proper maintenance ensures peace of mind while driving.

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