Study on Device Controlling Visual Information to Improve Driver's Performance

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  • 運転行動を向上させるための視覚情報制御技術に関する検討

Abstract

Image shape of road and image motion of optical flow are two different types of critical visual information for drivers. As for information of road, Land and Horwood (1995) reported that drivers utilize far point of their road for finding future direction as well as near point for controlling current position of the vehicle. We investigated the effect of optical flow in addition to the effects of near and far points of road on the driver's performance using a driving simulator. In results, though the optical flow in far depth contributed to comprehension of driving direction and decreased drivers' load, the optical flow in near depth made their steering inaccurate. Based on these findings, we developed a new device to decrease visual disturbance in near optical flow, and applied it on an actual vehicle. We found that the device improved the driver's head stability and steering stability. Thus, it is suggested that we can improve driver's performance by controlling visual information.

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