What is the function of ABS?

[LukeLee]

ABS system functions include: During braking, ABS quickly determines the wheel lock-up state based on speed signals from each wheel speed sensor, closing the normally open input solenoid valve for the wheel that begins to lock up to maintain constant braking force. If the wheel continues to lock up, the normally closed output solenoid valve is opened, causing the braking pressure on that wheel to rapidly decrease 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 rate S of 20%), achieving the best braking effect and the highest driving safety. It maximizes the effectiveness of the brakes, reducing braking time and distance; effectively prevents vehicle skidding and fishtailing during emergency braking, ensuring good driving stability; allows steering during emergency braking, providing good steering control; avoids severe friction between tires and the ground, reducing tire wear.

[StMaggie]

As a veteran driver with 30 years of experience, I believe the most important function of ABS is to prevent wheel lock-up during emergency braking. When I was young and drove cars without ABS, slamming the brakes on rainy days would cause the car to skid and lose control, making it easy to hit something. Now with ABS, the system monitors wheel speed and automatically modulates brake pressure multiple times per second when nearing lock-up, maintaining tire rotation. This allows me to steer around obstacles on wet or snowy surfaces while achieving shorter stopping distances. I remember one heavy snow day on the highway when the car ahead suddenly stopped - I braked hard and the car remained stable without skidding. If the ABS warning light comes on, get it checked immediately because it concerns life-or-death safety, though repairs aren't overly complicated. For daily driving, I recommend maintaining adequate tire tread depth for optimal ABS performance, and don't neglect regular maintenance.

[MacFrank]

Hey, I'm quite curious about automotive technology. ABS is like an intelligent braking assistant. The car is equipped with sensors to monitor the speed of each wheel. When you step on the brake, the system detects which wheel is about to lock up and controls the hydraulic unit to release and then reapply pressure, performing this cycle rapidly. This prevents the wheels from completely stopping, allowing you to maintain steering control and avoid losing control. For example, when driving after rain and trying an emergency stop on a muddy road, the car stops smoothly without skidding. Interestingly, the pedal vibrates when ABS is working—don’t be alarmed, it’s normal. ABS doesn’t always shorten braking distance in all road conditions, but it’s particularly effective on slippery surfaces. Most new cars come with this system as standard, and if the indicator light comes on, it indicates a fault that can usually be fixed with simple maintenance.

[DeEsther]

As a housewife who shuttles children to and from school every day, my top concern is vehicle safety. ABS prevents wheel lock-up during emergency braking, keeping the car from skidding uncontrollably while allowing steering to avoid hazards. One rainy afternoon when the roads were slippery, the car ahead suddenly stopped while I was driving my son home. I instinctively slammed on the brakes, and the ABS helped stabilize the car, preventing a rear-end collision. It operates automatically, so no special action is needed during normal driving. However, an illuminated ABS warning light shouldn't be ignored—it indicates potential system issues like sensor failures. I make sure to regularly check tires and brakes since ABS relies on these components. Proper maintenance provides greater peace of mind for safeguarding my family's travels.

[McJohnny]

I'm a car enthusiast. ABS technology took decades to develop from aircraft to widespread use in automobiles. Its function is to prevent wheels from completely locking up during braking, maintaining steering control. Older cars without ABS are prone to skidding or fishtailing when braking on wet roads. Most modern vehicles come standard with ABS, where the system rapidly adjusts brake pressure through sensors and pumps. I've tested it on icy roads - the car doesn't drift during hard braking. If the ABS warning light comes on, it needs checking; common issues are dirty sensors or minor circuit problems. If you don't understand it, get someone to fix it. This technology significantly improves road safety and reduces accident probability.