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Research on the International Roughness Index Threshold of Road Rehabilitation in Metropolitan Areas: A Case Study in Taipei City

Author

Listed:
  • Shong-Loong Chen

    (Department of Civil Engineering, National Taipei University of Technology, 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, Taiwan)

  • Chih-Hsien Lin

    (Department of Civil Engineering, National Taipei University of Technology, 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, Taiwan)

  • Chao-Wei Tang

    (Department of Civil Engineering and Geomatics, Cheng Shiu University, No. 840, Chengching Rd., Niaosong District, Kaohsiung 83347, Taiwan
    Center for Environmental Toxin and Emerging-Contaminant Research, Cheng Shiu University, No. 840, Chengching Rd., Niaosong District, Kaohsiung 83347, Taiwan
    Super Micro Mass Research and Technology Center, Cheng Shiu University, No. 840, Chengching Rd., Niaosong District, Kaohsiung 83347, Taiwan)

  • Liang-Pin Chu

    (Taipei City Government, No. 1, City Hall Rd., Xinyi District, Taipei City 110204, Taiwan)

  • Chiu-Kuei Cheng

    (Department of Agribusiness Management, National Pingtung University of Science and Technology, No. 1, Shuefu Rd., Neipu, Pingtung 91201, Taiwan)

Abstract

The International Roughness Index (IRI) is the standard scale for evaluating road roughness in many countries in the world. The Taipei City government actively promotes a Road Smoothing Project and plans to complete the rehabilitation of the main and minor roads within its jurisdiction. This study aims to detect the road surface roughness in Taipei City and recommend appropriate IRI thresholds for road rehabilitation. A total of 171 asphalt concrete pavement sections in Taipei City with a total length of 803.49 km were analyzed and compared by IRI. The longitudinal profile of the detected road sections was measured using an inertial profiler. The statistical analysis showed that the IRI value prior to road leveling was mainly distributed between 5 and 8 m/km, while the IRI value after road leveling was mainly distributed between 3 and 4.5 m/km. This confirms that the implementation of the Road Smoothing Project has a significant effect on improving road smoothness. Moreover, based on the analysis results, it is recommended that the IRI threshold value for road rehabilitation in Taipei City be set at 4.50 m/km.

Suggested Citation

  • Shong-Loong Chen & Chih-Hsien Lin & Chao-Wei Tang & Liang-Pin Chu & Chiu-Kuei Cheng, 2020. "Research on the International Roughness Index Threshold of Road Rehabilitation in Metropolitan Areas: A Case Study in Taipei City," Sustainability, MDPI, vol. 12(24), pages 1-19, December.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:24:p:10536-:d:463216
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    References listed on IDEAS

    as
    1. Yuchuan Du & Chenglong Liu & Difei Wu & Shengchuan Jiang, 2014. "Measurement of International Roughness Index by Using -Axis Accelerometers and GPS," Mathematical Problems in Engineering, Hindawi, vol. 2014, pages 1-10, June.
    2. Giuseppe Loprencipe & Antonio Pantuso & Paola Di Mascio, 2017. "Sustainable Pavement Management System in Urban Areas Considering the Vehicle Operating Costs," Sustainability, MDPI, vol. 9(3), pages 1-16, March.
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    Cited by:

    1. Shong-Loong Chen & Chun Lin & Chao-Wei Tang & Hsin-Ang Hsieh, 2022. "Evaluation of Pavement Roughness by the International Roughness Index for Sustainable Pavement Construction in New Taipei City," Sustainability, MDPI, vol. 14(12), pages 1-18, June.

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