Patent ID: 7882925

Claim:
A vehicle steering apparatus having a steering mechanism provided with a steering wheel maneuvered by a driver and a turning mechanism for turning a road wheel, the steering mechanism and the turning mechanism being mechanically separated from each other, comprising: a control means for changing a turning angle-steering angle ratio of a turning angle of the road wheel to a steering angle of the steering wheel in accordance with vehicle speed; and a turning-power motor for turning the road wheel based on the turning angle-steering angle ratio determined by the control means, wherein the turning angle-steering angle ratio increases with increasing vehicle speed until a vehicle speed reaches a predetermined value from zero and decreases with increasing vehicle speed when the vehicle speed is larger than the predetermined value, wherein an average value of absolute values of a rate of change of the turning angle-steering angle ratio when the turning angle-steering angle ratio decreases is smaller than an average value of absolute values of a rate of change of the turning angle-steering angle ratio when the turning angle-steering angle ratio increases, and wherein the predetermined value is set to less than 50 km/h.