Active cruise control is a feature that is available on many newer vehicles. It is a type of cruise control that uses sensors to monitor the distance between your vehicle and the one in front of you. If the sensors detect that the distance is getting too close, the active cruise control will automatically adjust your speed to maintain a safe following distance.
You can turn off active cruise control by pressing the cancel button on your steering wheel, or by pressing the brake pedal. Once you turn off active cruise control, it will remain off until you turn it back on again.