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The following has been understood for the change in the steer characteristic and the amount of perspiration in the drift cornering when not only visual information but also body sensory information is added. When body sensory information joins visual information as for the driver, it has been understood that the amount of perspiration increases overall and can do the drift control continuing with a moderate tension. In the drive only of visual information, the driver comes to arrive easily at spin because the drift control is difficult. And, it has been understood that the amount of perspiration increases greatly compared with the case to give body sensory information, and becomes the one with a very high risk. Moreover, the driver can control an adequate drift compared with driving only visual information in feed back body sensory information on the roll angle to the steer.

Various studies have been done into the steering models that describe how the driver steers the vehicle. However, no steering models for critical cornering have been developed. In this paper, the steering characteristic was investigated by monitoring the gaze of the driver during critical cornering. The direction of the steering model during critical cornering was considered. Since the driver can readily perceive the vehicle body slip angle if body sensory information is combined with visual information, it is important for the driver to be able to look at the target course easily and to control the drift well. Drivers exhibit the tendency to position their gaze point on a difficult corner exit to drive when body sensory information is combined with visual information. Thus, it was found that the driver can perceive the roll motion and visual feedback the body slip angle, and drive while stabilizing the vehicle from the corner exit to back straight.