A radar sensor generally comprises the centerpiece of Bosch adaptive cruise control. Optionally, the multi-purpose camera can be used in addition. The fusion of the sensor data leads to an even more robust object detection. When the way ahead is clear, ACC maintains the set speed requested by the driver. If the system detects that the vehicle in front is traveling slower, it reduces the speed comfortably and conveniently. If the vehicle in front speeds up again or changes lane, ACC automatically accelerates to the speed previously set by the driver.
ACC can be activated from a speed of approximately 30 km/h and primarily assists drivers during journeys on highways and over longer distances. The ACC Stop & Go variant also provides support at speeds of under 30 km/h. This system can even maintain the desired distance from the vehicle in front at low speeds and autonomously brake to bring the vehicle to a complete stop. In this way, ACC Stop & Go can relieve drivers in very heavy traffic or even in traffic jams.
With the ACC Stop & Go base variant, the system can autonomously accelerate the vehicle again after a stop of up to three seconds. Meanwhile, with ACC Stop & Go plus, the system can autonomously accelerate the vehicle again after a stop of up to 30 seconds. This requires additional surroundings sensors at the front of the vehicle to ensure that no objects or people have entered this area in the meantime. Additional corner radar sensors are suitable for this application.
Because ACC is a system designed with comfort in mind, the vehicle is only accelerated and braked within defined limits. Even when the system is switched on, it remains the driver’s responsibility to monitor the speed and distance from the vehicle in front.