Adaptive cruise control (ACC), a semi-autonomous driving feature, automatically adjusts a vehicle's speed to maintain a safe following distance from vehicles ahead. For instance, in a Toyota RAV4 with ACC, the system uses sensors to detect the presence and speed of other vehicles, and adjusts the car's speed accordingly.
ACC enhances driving safety and comfort by reducing driver fatigue and minimizing the risk of rear-end collisions. Since its introduction in the early 2000s, ACC has become increasingly sophisticated, with newer systems incorporating advanced features such as lane centering and stop-and-go functionality.