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Crash- and Simulation-Based Safety Performance Evaluation of Freeway Rest Area

Author

Listed:
  • Hyeonseo Kim

    (Department of Smart City Engineering, Hanyang University, Ansan 15588, Korea)

  • Kyeongjoo Kwon

    (Department of Transportation and Logistics Engineering, Hanyang University, Ansan 15588, Korea)

  • Nuri Park

    (Department of Smart City Engineering, Hanyang University, Ansan 15588, Korea)

  • Juneyoung Park

    (Department of Smart City Engineering, Hanyang University, Ansan 15588, Korea
    Department of Transportation and Logistics Engineering, Hanyang University, Ansan 15588, Korea)

  • Mohamed Abdel-Aty

    (Department of Civil, Environmental and Construction Engineering, University of Central Florida, Orlando, FL 32816, USA)

Abstract

The main objective of this study was to evaluate the safety effects caused by altering the lengths of deceleration and acceleration lanes at rest areas on expressways in Korea. Although general conclusions can be found through crash-based safety analysis, to examine more specific optimal conditions considering various traffic conditions, this study proposes a novel framework to explore and evaluate crash-based and simulation-based safety performances. For this purpose, the safety performance function (SPF) and crash modification factor (CMF) were developed to reflect real-world safety impacts. To consider nonlinear trends of the parameters, nonlinearizing link functions were introduced into the analysis. Two types of simulation analyses were conducted to (1) find the combination of surrogate safety measures (SSMs) that best fit with the crash-based safety performance results and (2) determine the optimal lengths of deceleration lane and acceleration lanes for different traffic conditions. The results showed that the best length of deceleration lane of a rest area is between 240 and 260 m, depending on the traffic conditions. The results also indicated that the optimal length of acceleration lane of a rest area is between 385 and 400 m, depending on the traffic parameters. The findings of this study could be used to determine the safety solutions with a micro-traffic simulator.

Suggested Citation

  • Hyeonseo Kim & Kyeongjoo Kwon & Nuri Park & Juneyoung Park & Mohamed Abdel-Aty, 2021. "Crash- and Simulation-Based Safety Performance Evaluation of Freeway Rest Area," Sustainability, MDPI, vol. 13(9), pages 1-13, April.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:9:p:4963-:d:545437
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    Cited by:

    1. Xin Tian & Mengmeng Shi & Mengyu Shao & Binghong Pan, 2023. "Calculation Method of Deceleration Lane Length and Slope Based on Reliability Theory," Sustainability, MDPI, vol. 15(17), pages 1-26, August.

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