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DU Zhi-gang, NI Yu-dan, YANG Li-bo, WEN Jing-zhou, YU Xin-yu. Effectiveness experiment of sight induction facilities of curve sections in highway tunnel[J]. Journal of Traffic and Transportation Engineering, 2020, 20(1): 215-225. doi: 10.19818/j.cnki.1671-1637.2020.01.018
Citation: DU Zhi-gang, NI Yu-dan, YANG Li-bo, WEN Jing-zhou, YU Xin-yu. Effectiveness experiment of sight induction facilities of curve sections in highway tunnel[J]. Journal of Traffic and Transportation Engineering, 2020, 20(1): 215-225. doi: 10.19818/j.cnki.1671-1637.2020.01.018
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Effectiveness experiment of sight induction facilities of curve sections in highway tunnel

doi: 10.19818/j.cnki.1671-1637.2020.01.018
  • 1.

    School of Transportation, Wuhan University of Technology, Wuhan 430063, Hubei, China

  • 2.

    Yunnan Research Institute of Highway Science and Technology, Kunming 650000, Yunnan, China

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  • Author Bio:

    DU Zhi-gang(1977-), male, professor, PhD, zhig_du7@163.com

  • Received Date: 2019-08-14
  • Publish Date: 2020-02-25
    Abstract
  • The influence of reflective ring number at highway tunnel curve sections with different radii on the driver's curvature perception was analyzed. Aiming at two typical sight induction schemes based on chevron alignment signs and reflective rings, the laboratory simulation experiment was conducted by driving simulator. The driver's curvature perception was measured by testing curve illusion degree and reaction time, and the test data were analyzed by the software of Origin. Analysis result shows that, before the improvement, drivers overestimate the radii by more than 35%, and the reaction times are not less than 5.46 s. When using 3 chevron alignment signs, the curve illusion degrees and reaction times at different radii slightly decrease. The curvature induction effect is good at a radius of 400 m, and the curve illusion degree is 6.12%, which means that the chevron alignment signs can improve the driver's curvature perception, but the improvement effect is not significant. When using 3 reflective rings, the curve illusion degrees at different radii are less than 5%, and the reaction times are more than 37% lower than before, which means that 3 reflective rings can effectively improve the driver's curvature perception and control the reaction time within a reasonable range. Based on the logistic function fitting analysis, the inflection points of the fitting curves between the curve illusion degrees and the number of reflective rings at different radii are close to 3 where the curve illusion degree is the lowest. Meanwhile, the drivers' reaction times at different radii are inversely related to the number of reflective rings. When the reflective rings are more than 4, the reaction times show a convergence trend, indicating that increasing the number of reflective rings has a limited effect on reducing the reaction time. Therefore, it is recommended to use 3 reflective rings to induce the driver's sight at highway tunnel curve sections.

     

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