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Heterogeneous Traffic Flow Signal Control and CAV Trajectory Optimization Based on Pre-Signal Lights and Dedicated CAV Lanes

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  • Jixiang Wang

    (School of Transportation Science and Engineering, Beihang University, Beijing 100191, China
    Beihang Hangzhou Innovation Institute Yuhang, Hangzhou 310052, China)

  • Haiyang Yu

    (School of Transportation Science and Engineering, Beihang University, Beijing 100191, China
    Zhongguancun Laboratory, Beijing 100083, China)

  • Siqi Chen

    (School of Transportation Science and Engineering, Beihang University, Beijing 100191, China
    Hefei Innovation Research Institute, Beihang University, Hefei 230071, China)

  • Zechang Ye

    (School of Transportation Science and Engineering, Beihang University, Beijing 100191, China
    Beihang Hangzhou Innovation Institute Yuhang, Hangzhou 310052, China)

  • Yilong Ren

    (School of Transportation Science and Engineering, Beihang University, Beijing 100191, China
    Zhongguancun Laboratory, Beijing 100083, China)

Abstract

This paper proposes a control system to address the efficiency and pollutant emissions of heterogeneous traffic flow composed of human-operated vehicles (HVs) and connected and automated vehicles (CAVs). Based on the comprehensive collection of information on the flow of heterogeneous traffic, the control system uses a two-layer optimization model for signal duration calculation and CAV trajectory planning. The upper model optimizes the phase duration in real time based on the actual total number and type of vehicles entering the control adjustment zone, while the lower model optimizes CAV lane-changing strategies and vehicle acceleration optimization curves based on the phase duration optimized by the upper model. The target function accounts for reducing fuel usage, carbon emission lane-changing costs, and vehicle travel delays. Based on the Webster optimal cycle formula, an improved cuckoo algorithm with strong search performance is created to solve the model. The numerical data confirmed the benefits of the suggested signal control and CAV trajectory optimization method based on pre-signal lights and dedicated CAV lanes for heterogeneous traffic flow. Intersection capacity was significantly enhanced, CAV average fuel consumption, carbon emission and lane-changing frequency were significantly reduced, and traffic flow speed and delay were significantly improved.

Suggested Citation

  • Jixiang Wang & Haiyang Yu & Siqi Chen & Zechang Ye & Yilong Ren, 2023. "Heterogeneous Traffic Flow Signal Control and CAV Trajectory Optimization Based on Pre-Signal Lights and Dedicated CAV Lanes," Sustainability, MDPI, vol. 15(21), pages 1-20, October.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:21:p:15295-:d:1267464
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    References listed on IDEAS

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    1. Xuan, Yiguang & Daganzo, Carlos F. & Cassidy, Michael J., 2011. "Increasing the capacity of signalized intersections with separate left turn phases," Transportation Research Part B: Methodological, Elsevier, vol. 45(5), pages 769-781, June.
    2. Yu, Chunhui & Feng, Yiheng & Liu, Henry X. & Ma, Wanjing & Yang, Xiaoguang, 2018. "Integrated optimization of traffic signals and vehicle trajectories at isolated urban intersections," Transportation Research Part B: Methodological, Elsevier, vol. 112(C), pages 89-112.
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