Park Distance Control.
A clear view in unclear situations: the Park Distance Control in the BMW Z4 Roadster gives you a comprehensive view and new perspectives.
The optional Park Distance Control (PDC) allows confident parking even in the tightest spaces. Ultrasonic sensors measure the distance between the car and the obstacle. An acoustic signal warns you of possible dangers and thus reduces the chances of parking damage. In combination with the navigation system, this information is also shown on the Control Display. A simple colour system shows the distance in green, yellow or red; making it easier to judge how much space you have.