This video shows the rear wheels from a 2011 Renault Laguna GT Estate, which is equipped with Renault's "4 Control" system. This system makes the rear wheels turn as well. 4 Control technology manages vehicle dynamics electronically. An electronic control unit (ECU) continually monitors speed, steering wheel angle and driving style, and, based on these parameters, transmits the right command for the rear wheel turning angle. Vehicle trajectory is thus modeled and corrected at every instant.
