Journal of Transportation Systems Engineering and Information Technology

Journal of Transportation Systems Engineering and Information Technology ›› 2022, Vol. 22 ›› Issue (1): 225-233.DOI: 10.16097/j.cnki.1009-6744.2022.01.024

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Innovative Design of Transportation Organization for Left-turn Non-motor Vehicles at Continuous Flow Intersection

SONG Lang1, 2 , WANG Jian* 1 , YANG Bin-yu1 , AN Shi1   

  1. 1. School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150090, China; 2. China Merchants Chongqing Communications Technology Research & Design Institute Co. Ltd, Chongqing 400067, China
  • Received:2021-09-29 Revised:2021-11-11 Accepted:2021-11-23 Online:2022-02-25 Published:2022-02-23
  • Supported by:
    Major Research Plan of the National Natural Science Foundation of China(91846301)；Chongqing Technological Innovation and Application Development Special Key Project (cstc2019jscx-tjsbX0013)。

连续流交叉口左转非机动车交通组织创新设计

宋浪1, 2，王健* 1，杨滨毓1，安实1   

  1. 1. 哈尔滨工业大学，交通科学与工程学院，哈尔滨 150090；2. 招商局重庆交通科研设计院有限公司，重庆 400067
  • 作者简介:宋浪(1996- )，男，贵州石阡人，博士生。
  • 基金资助:
    国家自然科学基金重大研究计划；重庆市技术创新与应用发展专项重点项目

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Abstract: In order to resolve the conflict between left-turn non-motor vehicles and straight- going motor vehicles at continuous flow intersections, an innovative design scheme is proposed for the left-turn non-motor vehicles crossing streets. Considering the conventional design and the two- step street crossing scheme, the three schemes were integrated into a unified optimization model. Taking the maximum vehicle throughput at the intersection as the optimization objective, a mixed-integer nonlinear programming optimization model was established, which was transformed into a nonlinear model. And the operational benefits of the three schemes were verified through VISSIM simulation. The result indicates the two-step street crossing scheme and the innovative design scheme can improve the traffic capacity of vehicles at intersections. The improvement can be more significant in high- flow scenarios, which reduce the vehicle delay by 55.58% and 57.18%, respectively. The conventional design is not suitable for the scene with the large straight-going motor flow, while the two-step street crossing scheme and the innovative design are not suitable for the scene with large left-turn motor vehicle flow. The increase of left-turn non-motor vehicle flow in the two- step street crossing scheme and the conventional design will lead to a rapid decline of the vehicle capacity. The innovative design is less affected by the left-turn non-motor vehicle flow and it has good applicability in various traffic scenarios.

Key words: traffic engineering, signal control, mixed integer nonlinear programming, continuous flow intersection; displaced left-turn, left turn bicycles

摘要： 为解决连续流交叉口左转非机动车和直行机动车冲突问题，提出一种左转非机动车过街创新设计方案，对比常规设计和两步过街方案，将3种方案整合到一个统一的优化模型中。以交叉口机动车通过量最大为优化目标，建立混合整数非线性规划优化模型，将其转换为非线性模型以便于求解，并利用VISSIM仿真验证3种方案的运行效益。结果表明，两步过街和创新设计相对于常规设计能提升交叉口机动车通行能力，且在高流量场景下拥堵改善效果更佳，分别能降低 55.58%、57.18%的机动车延误；常规设计不适用于直行机动车流量较大的场景，两步过街和创新设计不适用于左转机动车流量较大的场景；常规设计和两步过街左转非机动车流量增加，会导致机动车通行能力迅速下降，创新设计受左转非机动车流量的影响较小，在各种流量场景下适用性较好。

关键词: 交通工程, 信号控制, 混合整数非线性规划, 连续流交叉口, 移位左转, 左转非机动车

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