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Evaluation of Safety in Horizontal Curves of Roads Using a Multi-Body Dynamic Simulation Process

Author

Listed:
  • Amir Saman Abdollahzadeh Nasiri

    (Department of Civil Engineering, South Tehran Branch, Azad University, Tehran 1584715414, Iran)

  • Omid Rahmani

    (Faculty of Civil Engineering, Shahrood University of Technology, Shahrood 3619995161, Iran)

  • Ali Abdi Kordani

    (Department of Civil Engineering, Imam Khomeini International University, Qazvin 3414896818, Iran)

  • Nader Karballaeezadeh

    (Faculty of Civil Engineering, Shahrood University of Technology, Shahrood 3619995161, Iran)

  • Amir Mosavi

    (Faculty of Civil Engineering, Technische Universität Dresden, 01069 Dresden, Germany
    Institute of Research and Development, Duy Tan University, Da Nang 550000, Vietnam
    Department of Informatics, J. Selye University, 94501 Komarno, Slovakia)

Abstract

Road transportation poses one of the significant public health risks. Several contributors and factors strongly link public health and road safety. The design and advancement of higher-quality roads can significantly contribute to safer roads and save lives. In this article, the safety aspect of the roads’ horizontal curves under the standard of the American Association of State Highway Transportation Officials (AASHTO) is evaluated. Several factors, including vehicle weight, vehicle dimensions, longitudinal grades, and vehicle speed in the geometric design of the horizontal curves, are investigated through a multi-body dynamic simulation process. According to the AASHTO, a combination of simple circular and clothoid transition curves with various longitudinal upgrades and downgrades was designed. Three vehicles were used in this simulation, including a sedan, a bus, and a 3-axle truck. The analysis was based on the lateral friction between the tire and the pavement and also the safety margin parameter. The results showed that designers must differentiate between light and heavy vehicles, especially in curves with a high radius. Evaluation of longitudinal grade impacts indicated that the safety margin decreases when the vehicle is entering the curve. Safety margin reduction on the clothoid curve takes place with a lower grade toward the simple circular curve. By increasing the speed, the difference between lateral friction demand obtained from simulation and lateral friction demand proposed by AASHTO grows. The proposed novel methodology can be used for evaluating road safety.

Suggested Citation

  • Amir Saman Abdollahzadeh Nasiri & Omid Rahmani & Ali Abdi Kordani & Nader Karballaeezadeh & Amir Mosavi, 2020. "Evaluation of Safety in Horizontal Curves of Roads Using a Multi-Body Dynamic Simulation Process," IJERPH, MDPI, vol. 17(16), pages 1-20, August.
    • Handle: RePEc:gam:jijerp:v:17:y:2020:i:16:p:5975-:d:400196
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    References listed on IDEAS

    as
    1. Yanna Yin & Huiying Wen & Lu Sun & Wei Hou, 2020. "The Influence of Road Geometry on Vehicle Rollover and Skidding," IJERPH, MDPI, vol. 17(5), pages 1-17, March.
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    Cited by:

    1. Qingzhou Wang & Yaxuan Zhao & Lujia Li & Liying Kong & Wenjing Si, 2024. "Influence of Snowy and Icy Weather on Vehicle Sideslip and Rollover: A Simulation Approach," Sustainability, MDPI, vol. 16(2), pages 1-30, January.
    2. Jinliang Xu & Wenzhen Lv & Chao Gao & Yufeng Bi & Minghao Mu & Guangxun E, 2022. "Why Do Drivers’ Collision Avoidance Maneuvers Tend to Cause SUVs to Sideslip or Rollover on Horizontal Curve and Grade Combinations?—An Analysis of the Causes Based on a Modified Multibody Dynamics Mo," IJERPH, MDPI, vol. 19(23), pages 1-21, November.
    3. Ester Olmeda & Enrique Roberto Carrillo Li & Jorge Rodríguez Hernández & Vicente Díaz, 2022. "Lateral Dynamic Simulation of a Bus under Variable Conditions of Camber and Curvature Radius," Mathematics, MDPI, vol. 10(17), pages 1-25, August.

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