What is ACC Adaptive Cruise Control?
3 Answers
ACC adaptive cruise control is an intelligent automatic control system. When the distance to the vehicle ahead becomes too small, the ACC control unit can coordinate with the anti-lock braking system and engine control system to apply appropriate wheel braking and reduce engine power output, thereby maintaining a safe distance from the preceding vehicle. When controlling vehicle braking, the adaptive cruise control system typically limits the braking deceleration to a level that doesn't affect comfort. When greater deceleration is required, the ACC control unit will issue audible and visual alerts to prompt the driver to manually apply the brakes. Once the distance to the vehicle ahead increases to a safe range, the ACC control unit resumes maintaining the preset cruising speed.
ACC adaptive cruise control is an intelligent driving system that I've used quite often because it makes driving more effortless. After setting the cruising speed, the system uses radar or cameras to detect the distance and speed of the vehicle ahead. If the car in front slows down, my vehicle automatically decelerates to maintain a safe gap; when the leading car accelerates, it resumes the preset speed. Compared to traditional cruise control, ACC is more flexible and won't blindly maintain speed, eliminating frequent throttle and brake pedal operation during highway traffic jams. Technically speaking, this involves electronic control units and processing sensor signals, with the core being real-time adaptation to road conditions. However, during rain, fog, or poor lighting, sensor accuracy decreases, so I only fully trust it in clear weather. ACC is often combined with automatic braking functionality, which can prevent rear-end collisions and make long trips more comfortable. But don't rely on it carelessly – I always keep my hands on the steering wheel ready to take over. Overall, this technology represents progress in automotive intelligence and will integrate more autonomous driving features in the future.
I understand ACC (Adaptive Cruise Control) as a driving assistant that automatically adjusts the vehicle speed to follow the car ahead once set. It's most practical on highways—for example, if I set the speed to 100 km/h and the car ahead slows to 80 km/h, my car also decelerates; when the leading car speeds up, mine accelerates back. This saves me the hassle of constantly adjusting the throttle, especially during long trips or in traffic flow. I remember driving to another city last year, where ACC made the congested sections much less stressful, significantly easing the drive. It operates via radar or cameras, but don’t mistake it for full self-driving—I still need to monitor road conditions. Sensors may malfunction in rain or snow, so I only use it in clear weather. ACC also enhances safety by reducing rear-end collision risks, and some newer models even include stop-and-go functionality. I believe everyday drivers would appreciate this feature as it reduces fatigue and improves efficiency. Combined with Lane Keeping Assist, ACC forms the foundation of semi-autonomous driving. However, remember to regularly check and clean the sensors to ensure accuracy.
