ABSTRACT
To study the relationship between driver's visual adaptation at the entrance of a high-altitude super long tunnel and driver's decision-making behavior, a relationship model between illumination change rate and speed of tunnel entrance section based on driver's visual characteristics under high-altitude driving environment was constructed. Taking Wuyu Tianshan Shengli tunnel as the research object, the relationship between the illumination change rate before the driver approaches the tunnel portal and the driver's driving speed is analyzed. Through the real vehicle test in gezigou tunnel, the driver's speed and acceleration data and the illumination change data from 500 m in front of the tunnel to 200 m at the entrance of the tunnel are collected. This paper explores the change law of the driver's visual perception to complete a series of visual tasks while driving in a high-altitude highway tunnel from searching the tunnel entrance to driving into the tunnel entrance. By testing the driver's speed reduction rate and the illumination reduction rate of the corresponding distance, it is studied that the illumination change significantly affects the driver's visual perception, and 500 m before entering the tunnel The entrance section of 30–50 m has the greatest impact on the visual perception of the tested driver. Providing experimental support for the compensation of visual illuminance at the tunnel entrance can improve the driving safety of highway tunnel lighting.
