The feature Driving Assistant combines the camera-based systems Lane Departure Warning and approach control and person warning with light city braking function.
The Lane Departure Warning detects lane markings and alerts the driver to an unintentional lane change at speeds above approx. 70 km/h by means of vibrations in the steering wheel and a visual warning in the instrument cluster. The warning is not activated when the lane change is deliberate, i.e. when the indicator is turned on.
While the approach control warning with light city braking function detects vehicles, the person warning with light city braking function reacts to pedestrians. If a vehicle ahead brakes heavily, the BMW responds immediately when the approach control warning is activated. The system operates in steps. A warning symbol is first displayed, then the symbol begins blinking and an acoustic warning is emitted, and finally the brakes are lightly applied (when travelling at speeds under 60 km/h). The person warning operates at speeds between 10 and 60 km/h and emits a single-level warning in the event of acute danger. If the system warns of a potential collision, the brakes are simultaneously preconditioned for a faster response. In the event of an emergency, the system applies the brakes. This function can be limited by darkness and fog.