Audi A7 come loaded with the many advanced features for comfortable and safe driving. One such feature is the Audi active lane assist which helps the driver to stay in lane and therefore boost comfort particularly on motor ways and well constructed main roads. If the driver has activated Audi Active lane assist, the camera on the interior mirror attempts to detect the lane markings on the road. If the car is moving at a speed above 60kmph the system if switched on becomes active and calculated where the vehicle will be in its lane in next few seconds. If it detects that vehicle is threatening to drift out of lane, the lane assist aids the driver by making gentle corrections at the steering wheel, if the driver obeys this corrections, the vehicle is steered back into the center of its lane. The system therefore prevents the vehicle from leaving its lane in potentially critical situations, for example - owing to inattentiveness. However the driver is not prevented from driving in his custom style, if the system detects that the driver wishes to move into a different lane like by activating the turn signal or by deliberately turning the steering wheel it does not intervene. Therefore only provides assistance when this seems necessary. The responsibility in keeping in lane still remains with the driver.