The safety system Audi pre sense front is on board together with the adaptive cruise control. It aids in avoiding rear-end collisions and minimizing their consequences. In a dangerous situation, the system prompts the driver to brake using a differentiated warning concept - with visual and audible signals as well as a brake jerk. If the driver does not react, firstly a partial delay will take place followed by a full delay - provided that the vehicle in front is moving. The system also tightens the seatbelts and initiates the pre sense basic measures. Audi pre sense front is functional even when the adaptive cruise control is switched off.