Safety Evaluation of Highway Tunnel-Entrance Illuminance Transition Based on Eye-Pupil Changes

  • Zhigang Du
  • Hongliang Wan Wuhan University of Technology
  • Chaozhong Wu Wuhan University of Technology
  • Xiaodong Pan Tongji University
Keywords: Highway tunnel, entrance, illuminance transition, pupil change, visual load,

Abstract

Utilizing the EMR-8B eye-tracker system, the pupil changes of eight drivers were monitored when they drove through 26 typical highway tunnels. Based on the test results, the driver’s pupil areas and pupil illuminance were found to be in a power function relationship at tunnel entrances. Furthermore, a quantitative relationship between the pupil area and its critical velocity was established, and the ratio of pupil area’s velocity in relation to its critical velocity was used to evaluate the lighting transitions and to establish the ideal curve of pupil illuminance at tunnel entrances. The results demonstrated that the relationship between the pupil illuminance of the tunnel entrance and the driver’s pupil areas conforms to the Stevens law found in experimental psychology; severe pupil illuminance transition within the range of 10 metres of the existing highway tunnel entrances, which results in great visual load, is in urgent need of improvement.

Author Biographies

Chaozhong Wu, Wuhan University of Technology
Ph.D., Professor, Intelligent Transport Systems Research Center
Xiaodong Pan, Tongji University
Ph.D., Transportation School

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Published
2014-10-31
How to Cite
1.
Du Z, Wan H, Wu C, Pan X. Safety Evaluation of Highway Tunnel-Entrance Illuminance Transition Based on Eye-Pupil Changes. PROMET [Internet]. 2014Oct.31 [cited 2019Dec.7];26(5):363-70. Available from: http://traffic.fpz.hr/index.php/PROMTT/article/view/1321
Section
Articles