Does the ABS Anti-lock Braking System Extend Braking Distance?
2 Answers
ABS Anti-lock Braking System can extend braking distance. ABS, the full name is Anti-lock Braking System. Working principle of ABS: During braking, ABS quickly determines the wheel lock-up state based on the speed signals from each wheel speed sensor, closes the normally open input solenoid valve of the wheel that is starting to lock up, and keeps the braking force unchanged. If the wheel continues to lock up, the normally closed output solenoid valve is opened, and the braking pressure on this wheel rapidly decreases due to the direct connection to the brake fluid reservoir, preventing the wheel from completely locking up due to excessive braking force. This keeps the braking state at the optimal point (slip ratio S of 20%), achieving the best braking effect and the highest driving safety. Functions of ABS: Maximize the effectiveness of the brakes, shorten braking time and distance. Effectively prevent vehicle skidding and fishtailing during emergency braking, ensuring good driving stability. Allow steering during emergency braking, providing good steering maneuverability. Avoid severe friction between tires and the ground, reducing tire wear.
I've been driving for over a decade and have experienced ABS in action during emergencies. Once on a rainy highway, the car ahead suddenly braked hard. I stomped on the pedal, the ABS made a clattering noise and the car shook, but it came to a steady stop without losing control. Later I learned that the ABS system prevents wheel lock-up. On wet roads it can actually shorten braking distance because the wheels don't skid, maintaining better traction. But on completely dry paved roads, ABS might result in slightly longer stopping distances compared to manual braking, though the difference is minimal and basically negligible. The real benefit of ABS is maintaining steering control, allowing you to avoid obstacles. Don't be alarmed by the noise it makes when working - that's normal. Regular drivers should periodically check their brake systems to ensure ABS functions properly.
