Analysis of ambient illumination and driver's pupil area in tunnel group

作者：Yan, Ying; Ye, Fei; Wang, Xiao-Fei^*; Shen, Xiao-Yan; Hu, Hui

来源：Journal of South China University of Technology(Natural Science Edition), 2016, 44(12): 89-96.

DOI：10.3969/j.issn.1000-565X.2016.12.013

• Illumination intensity
• Pupil area
• Relational Model
• Traffic safety
• Visual environments

In order to improve the driver's safety in expressway tunnel groups, the eye-movement equipment is adopted to conduct a pupil variation experiment, and the relationship between the driver's pupil area and the ambient illumination as well as the longitudinal depth of the tunnel is analyzed. Then, a “six small”division method of tunnel groups is proposed, and a curve model describing the relationship between the maximum difference of the driver's pupil areas and the connection length of the tunnel is constructed. The results indicate that there exists an exponential relationship between the driver's pupil area and the ambient illumination, and the visual light adaptation level and connection length of the upstream tunnel exit are the main factors influencing the visual adaptation of both the downstream tunnel and the whole tunnel group sections. Finally, the recommended values to improve the ambient illumination of the tunnel group are put forward. It is suggested that, when the tunnel spacing is less than 50m, the shading shed in the tunnel connection section or the illumination gradient exit of the upstream tunnel should be set, while within the range of 50~100m, the illumination gradient exit of the downstream tunnel should be set.

• 出版日期2016-12-1
• 单位华南理工大学