Journal of South China University of Technology (Natural Science Edition) ›› 2016, Vol. 44 ›› Issue (12): 89-96.doi: 10.3969/j.issn.1000-565X.2016.12.013

• Traffic & Transportation Engineering • Previous Articles     Next Articles

Analysis of Ambient Illumination and Driver's Pupil Area in Tunnel Group

YAN Ying1 YE Fei2 WANG Xiao-Fei3 SHEN Xiao-yan1 HU Hui1   

  1. 1.School of Automobile，Chang'an University,Xi'an 710064,Shaanxi,China; 2.School of Transportation Management,Zhejiang Institute of Communications,Hangzhou 311112,Zhejiang,China; 3.School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2016-04-07 Revised:2016-06-21 Online:2016-12-25 Published:2016-11-01
  • Contact: 王晓飞(1980-)，女，博士，讲师，主要从事道路安全研究． E-mail:xiaofeiw@scut.edu.cn
  • About author:阎莹(1981-)，女，博士，副教授，主要从事交通安全研究． E-mail:yanying2199@chd．edu．cn
  • Supported by:
    Supported by the National Key Technology Research and Development Program of the Ministry of Science and Technology of China(2014BAH23F01-1)，the National Natural Science Foundation of China(51308059，51408229) and the China Postdoctoral Science Foundation(2014M552399)

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Abstract:

In order to improve the driver's safety in expressway tunnel groups,the eye-movement equipment is a- dopted 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 tun- nel 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 am- bient illumination of the tunnel group are put forward.It is suggested that,when the tunnel spacing is less than 50 m,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.

Key words: traffic safety, tunnel, pupil area, illumination intensity, relational model, visual environment