Original scientific paper
https://doi.org/10.7307/ptt.v26i5.1321
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
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.
Keywords
Highway tunnel; entrance; illuminance transition; pupil change; visual load
Hrčak ID:
130135
URI
Publication date:
30.10.2014.
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