System for evaluating the traffic environment of a motor vehicle and for influencing the speed of the motor vehicle in its own traffic lane, comprising an electronic control unit, which is connected to a signal transmitter that produces a signal characteristic of the desired speed of the motor vehicle,...http://www.google.de/patents/US7386385?utm_source=gb-gplus-sharePatent US7386385 - System for recognising the lane-change manoeuver of a motor vehicle
