The control system monitors the steering angle of the steering wheel and/or the steered wheels as well as the vehicle speed. Other sensors monitor the rate of slewing as well as the transverse acceleration i.e. the dynamic condition of the vehicle. The control system computes the programmed steering angle and compares it with the actual steering angle to obtain a correction signal. The steering correction can also be applied to the rear wheel steering and compensates for non-linear characteristics in the steering control programs. The non linear characteristics lead to uncontrolled steering 'feel' and are reduced, or prevented, by the feedback nature of the control.
