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Safety aspects of freeway weaving sections

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  • Golob, Thomas F.
  • Recker, Wilfred W.
  • Alvarez, Veronica M.

Abstract

One source of vehicle conflict is the freeway weaving section, where a merge and diverge in close proximity require vehicles either entering or exiting the freeway to execute one or more lane changes. Using accident data for a portion of Southern California, we examined accidents that occurred on three types of weaving sections defined in traffic engineering: Type A, where every merging or diverging vehicle must execute one lane change, Type B, where either merging or diverging can be done without changing lanes, and Type C, where one maneuver requires at least two lane changes. We found no difference among these three types in terms of overall accident rates for 55 weaving sections over one year (1998). However, there were significant differences in terms of the types of accidents that occur within these types in terms of severity, and location of the primary collision, the factors causing the accident, and the time period in which the accident is most likely to occur. These differences in aspects of safety lead to implications for traffic engineering improvements.

Suggested Citation

  • Golob, Thomas F. & Recker, Wilfred W. & Alvarez, Veronica M., 2004. "Safety aspects of freeway weaving sections," Transportation Research Part A: Policy and Practice, Elsevier, vol. 38(1), pages 35-51, January.
    • Handle: RePEc:eee:transa:v:38:y:2004:i:1:p:35-51
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    References listed on IDEAS

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    Cited by:

    1. Zhanji Zheng & Qiaojun Xiang & Xin Gu & Yongfeng Ma & Kangkang Zheng, 2020. "The Influence of Individual Differences on Diverging Behavior at the Weaving Sections of an Urban Expressway," IJERPH, MDPI, vol. 18(1), pages 1-17, December.
    2. Zhao, Jingya & Liu, Qingchao, 2024. "Quantitative causality assessment between traffic states and crash risk in freeway segments with closely spaced entrance and exit ramps," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 637(C).
    3. Jin, Wen-Long, 2013. "A multi-commodity Lighthill–Whitham–Richards model of lane-changing traffic flow," Transportation Research Part B: Methodological, Elsevier, vol. 57(C), pages 361-377.
    4. Snelder, M. & Wesseling, B. & van Arem, B. & Hertogh, M.J.C.M., 2017. "Evaluating the robustness effects of infrastructure projects based on their topological and geometrical roadway designs," Transport Policy, Elsevier, vol. 57(C), pages 20-30.
    5. Abdelhalim Azam & Fayez Alanazi & Mohamed Ahmed Okail & Mohamed Ragab, 2023. "Operational and Environmental Assessment of Weaving Section for Urban Roads: Case Study, Aljouf Region, KSA," Sustainability, MDPI, vol. 15(5), pages 1-13, February.
    6. Younshik Chung, 2017. "Identification of Critical Factors for Non-Recurrent Congestion Induced by Urban Freeway Crashes and Its Mitigating Strategies," Sustainability, MDPI, vol. 9(12), pages 1-14, December.
    7. Xinhua Mao & Changwei Yuan & Jiahua Gan & Shiqing Zhang, 2019. "Risk Factors Affecting Traffic Accidents at Urban Weaving Sections: Evidence from China," IJERPH, MDPI, vol. 16(9), pages 1-17, May.
    8. Jin, Wen-Long, 2010. "A kinematic wave theory of lane-changing traffic flow," Transportation Research Part B: Methodological, Elsevier, vol. 44(8-9), pages 1001-1021, September.
    9. Yulan Xia & Yaqin Qin & Xiaobing Li & Jiming Xie, 2022. "Risk Identification and Conflict Prediction from Videos Based on TTC-ML of a Multi-Lane Weaving Area," Sustainability, MDPI, vol. 14(8), pages 1-21, April.

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