What is the difference between service brake and parking brake?
2 Answers
Service brake and parking brake have the following differences: Working principle: The parking brake refers to the handbrake, while emergency braking is mainly distinguished from anticipatory braking, which means taking immediate braking measures when an emergency is detected to stop the vehicle in the shortest possible time. Engine braking refers to using the engine's drag force to implement braking, such as when going downhill for a long distance. If the brakes are applied for too long, the brake pads may burn out. In such cases, you can shift to a lower gear and coast at idle speed, using the engine's drag force to control the vehicle's speed. Usage scenarios: The brake is the braking system. Brakes are divided into service brakes (foot brake) and parking brakes (handbrake). During driving, the service brake (foot brake) is generally used to slow down or stop the vehicle while moving forward, not just to keep the car stationary. The parking brake is used only when the service brake fails. When the vehicle comes to a complete stop, the parking brake (handbrake) should be applied to prevent the vehicle from sliding forward or rolling backward.
The service brake is the braking system used while driving, primarily controlled by foot pedals to slow down or completely stop the vehicle, ensuring safe speed control during motion. The parking brake, on the other hand, is a safety device for when the vehicle is parked, such as the handbrake, which locks the wheels to prevent the car from rolling—especially crucial on slopes. I often notice that beginners tend to confuse them, like pulling the handbrake instead of stepping on the brake pedal at traffic lights, which is uncomfortable and may wear out the brake pads. Their system structures also differ: the service brake is hydraulically driven, offering quick response but generating heat, while the parking brake is mechanically operated via steel cables or electronic buttons, providing more durability and reliability. Never use the parking brake as a deceleration tool while driving, as it can damage the axle. The key difference lies in timing: the service brake is for dynamic driving, while the parking brake is for static parking. I’ve made it a habit to engage the handbrake immediately after stopping, avoiding that scary moment of rolling. Remember, regular maintenance is essential—check brake fluid levels and ensure the handbrake is tight. In short, clearly distinguishing these two systems is fundamental to driving safety.
