The present invention relates to a steering linkage device which transmits a
user's input motion to at least one wheel of a vehicle, wherein the steering linkage
device produces an output motion of a particular magnitude. The ratio of the magnitude
of the input motion to the magnitude of the output motion varies, depending upon
the magnitude of the input motion. The steering linkage device enhances the steering
control of vehicle users by varying the steering responsiveness for different steering
motions made by the users.