What is the Audi Driver Assistance System?

[DiMaci]

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. Operating within a speed range of 0 to 250 km/h, this system controls vehicle speed and the distance to the preceding vehicle through automatic acceleration or braking. Below is additional information: 1. Introduction to the ACC system: The system utilizes two radar sensors installed at the front of the vehicle (automatically heated in cold conditions) that emit radar waves at a frequency of 76.5 GHz, covering approximately a 40-degree field of view and a fan-shaped area extending about 250 meters. The sensor control unit processes these signals to monitor the situation ahead of the vehicle. The driver can influence the ACC system's functions, adjusting the following distance to the preceding vehicle and the intervention intensity of the control system from sporty to comfort modes. The system's maximum deceleration is limited to approximately 4 m/s², which is about one-third of the maximum possible deceleration. 2. Automatic speed reduction to a complete stop: In stop-and-go traffic conditions, 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 to follow the preceding vehicle. 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. 3. Detection of potential hazards: In this way, the system can detect potential hazards—such as pedestrians attempting to cross the street at the last moment of a green light. The parking system's ultrasonic sensors provide additional detailed information, monitoring the vehicle's starting process.