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Evaluating the Impact of Sight Distance and Geometric Alignment on Driver Performance in Freeway Exits Diverging Area Based on Simulated Driving Data

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Listed:
  • Xizhen Zhou

    (Highway School, Chang’an University, Xi’an 710064, China)

  • Binghong Pan

    (Highway School, Chang’an University, Xi’an 710064, China)

  • Yang Shao

    (School of Modern Posts (Logistics School) & Institute of Posts, Xi’an University of Posts & Telecommunications, Xi’an 710061, China)

Abstract

The decision sight distance (DSD) at freeway exits is a major factor affecting traffic safety. Based on the Hechizhai Interchange in Xi’an City (Shaanxi Province, China), this paper designs a simulation experiment. Through a simulator study and a questionnaire survey, this paper discusses the impact of the DSD, 1.25 times the stopping sight distance (SSD) and a circular curve deflection on a driver’s driving state (including steering wheel angle rate and steering wheel angle frequency domain). Thirty volunteers participated in this research. The result shows that (1) it is safer to drive on an exit that meets DSD. (2) If it only meets the 1.25 times the SSD requirement, the overloaded driving tasks and operation would be more likely to cause crashes. The driving state of the driver on the right circular curve is obviously better than that on the left circular curve, because changing lanes to the right on the left circular curve does not meet the driver’s expectations. (3) Left and right circular curve should be treated differently in the driving area and the constant sight distance requirements should not be applied. (4) The left circular curve should be more stringent to ensure driving safety.

Suggested Citation

  • Xizhen Zhou & Binghong Pan & Yang Shao, 2021. "Evaluating the Impact of Sight Distance and Geometric Alignment on Driver Performance in Freeway Exits Diverging Area Based on Simulated Driving Data," Sustainability, MDPI, vol. 13(11), pages 1-18, June.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:11:p:6368-:d:568405
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    References listed on IDEAS

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    1. Xu, Shu-Xian & Liu, Tian-Liang & Huang, Hai-Jun & Liu, Ronghui, 2018. "Mode choice and railway subsidy in a congested monocentric city with endogenous population distribution," Transportation Research Part A: Policy and Practice, Elsevier, vol. 116(C), pages 413-433.
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    Cited by:

    1. Mengmeng Shi & Xin Tian & Xiaowen Li & Binghong Pan, 2023. "The Impact of Parallel U-Turns on Urban Intersection: Evidence from Chinese Cities," Sustainability, MDPI, vol. 15(19), pages 1-23, September.

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