Audi's driver assistance system is centered around adaptive cruise control with stop & go functionality, which is an automatic distance-keeping system for following vehicles. Within a speed range of 0 to 250 km/h, this system controls the vehicle's speed and the distance to the vehicle ahead by automatically accelerating or braking. Additional Information: 1. Stop & Go Function: The core of Audi's driver assistance system is adaptive cruise control with stop & go functionality, an automatic distance-keeping system for following vehicles. Within a speed range of 0 to 250 km/h, this system controls the vehicle's speed and the distance to the vehicle ahead by automatically accelerating or braking. 2. How It Works: The system operates using two radar sensors installed at the front of the vehicle (which automatically heat up in cold conditions). These sensors emit radar waves at a frequency of 76.5 GHz, covering a field of view of approximately 40 degrees and a fan-shaped area up to 250 meters long. The sensor control unit processes the signals to monitor conditions ahead of the car. The driver can influence the ACC system's functionality, adjusting the following distance and the intervention intensity of the control system in stages—from sporty to comfortable. The system's maximum deceleration is limited to about 4 m/s², roughly one-third of the maximum possible deceleration. In stop-and-go traffic, the ACC system can automatically reduce speed until the vehicle comes to a complete stop. After brief stops, such as at traffic lights, the car automatically restarts and follows the vehicle ahead. For longer stops, the driver must press the accelerator or operate the control lever to resume following. Before restarting, the system checks image data provided by the camera on the interior rearview mirror.
