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Determining Appropriate Lane-Changing Spacing for Off-Ramp Areas of Urban Expressways

Author

Listed:
  • Zhufei Huang

    (Beijing Engineering Research Center of Urban Transportation Operation Support, 100 Pingleyuan, Chaoyang District, Beijing University of Technology, Beijing 100124, China)

  • Zihan Zhang

    (China Academy of Urban Planning & Design, Beijing 100044, China)

  • Haijian Li

    (Beijing Engineering Research Center of Urban Transportation Operation Support, 100 Pingleyuan, Chaoyang District, Beijing University of Technology, Beijing 100124, China)

  • Lingqiao Qin

    (TOPS Laboratory, Department of Civil and Environmental Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, WI 53706, USA)

  • Jian Rong

    (Beijing Engineering Research Center of Urban Transportation Operation Support, 100 Pingleyuan, Chaoyang District, Beijing University of Technology, Beijing 100124, China)

Abstract

Congestion has become a significant issue in recent years and has greatly affected the efficiency of urban traffic operation. Random and disorderly lane-changing behavior greatly reduces traffic capacity and safety. This paper is mainly concerned with the relationship of lane-changing spacing intervals provided by off-ramp facilities and traffic flow conditions. Through field investigations in Beijing, several typical lane-changing behaviors at off-ramp areas are analyzed. By using field traffic data and actual road geometry parameters, VISSIM-based micro-behavior simulations at off-ramp areas are implemented to obtain traffic flow conditions with different lane-changing spacing intervals and other model parameters, such as traffic volume and ratio of off-ramp vehicles. Then, the numerical relationships between traffic flow state and model parameters can be shown. The results show that with increasing traffic volume and the ratio of off-ramp vehicles, the lane-changing spacing interval required by vehicles should be increased. For the same ratio of off-ramp vehicles, if the traffic volume increases by 100 pcu/h/lane (pcu is a unit to stand for a standard passenger car), the corresponding lane-changing spacing interval should be increased by a spacing of 50–100 m to avoid increasing congestion. Based on the results of this paper, smart lane management can be implemented by optimizing lane-changing spacing intervals and lane-changing behaviors to improve traffic capacity.

Suggested Citation

  • Zhufei Huang & Zihan Zhang & Haijian Li & Lingqiao Qin & Jian Rong, 2019. "Determining Appropriate Lane-Changing Spacing for Off-Ramp Areas of Urban Expressways," Sustainability, MDPI, vol. 11(7), pages 1-15, April.
    • Handle: RePEc:gam:jsusta:v:11:y:2019:i:7:p:2087-:d:220849
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    References listed on IDEAS

    as
    1. Xiaoyuan Wang & Jianqiang Wang & Jinglei Zhang & Xuegang Jeff Ban, 2015. "Lane-changing model with dynamic consideration of driver's propensity," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 26(02), pages 1-19.
    2. Gong, Siyuan & Du, Lili, 2016. "Optimal location of advance warning for mandatory lane change near a two-lane highway off-ramp," Transportation Research Part B: Methodological, Elsevier, vol. 84(C), pages 1-30.
    3. Zheng, Zuduo, 2014. "Recent developments and research needs in modeling lane changing," Transportation Research Part B: Methodological, Elsevier, vol. 60(C), pages 16-32.
    4. Tie-Qiao Tang & Yun-Peng Wang & Xiao-Bao Yang & Hai-Jun Huang, 2014. "A Multilane Traffic Flow Model Accounting for Lane Width, Lane-Changing and the Number of Lanes," Networks and Spatial Economics, Springer, vol. 14(3), pages 465-483, December.
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