A driver model steers by using quartic curve and variable sight distances which incorporate target position and orientation. This model assumes that the driver gazes on a fixed point if there is a point of concern. Upon reaching a minimum distance, the driver's gaze shifts to normal. A driver gets his most steering information from visual road image and then adaptively plans his trajectory by which he will get the desired target position and orientation. From these he estimates the curvature by quartic curve relation and then transforms it to the steering angle.
To verify driver model's assumption, we develop driving simulator which is composed of stereo graphics and steering handle. Five males are participated in this experiment with 3 DOF car model for fast computation.
The result is that driver's sight distance and time delay are reduced according to increase in road bent angle. So more tension is required for difficult task.
