Audi braking guard brake assist system is designed to reduce the risk of rear-end collisions.

Audi braking guard forms part of the radar-based adaptive cruise control system, or ACC for short. This system regulates the speed and the distance from the vehicle in front at speeds between 30 and 200 km/h, independently applying the brakes within certain limits in the process.<ul><li><a href="http://www.zonelance.com/articles/2626/1/Safety-based-on-radar-technology--Audi-braking-guard/Page1.html">Safety based on radar technology - Audi braking guard</a></li></ul>