长沙理工大学学报(自然科学版)
不同服务水平下车辆汇入行为差异的研究
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作者单位:

长沙理工大学 交通运输工程学院,湖南 长沙 410114

作者简介:

龙科军(1974-)(ORCID:0000-0002-5659-9855),男,教授,主要从事交通运输规划与管理方面的研究。E-mail:longkejun@csust.edu.cn

通讯作者:

龙科军(1974-)(ORCID:0000-0002-5659-9855),男,教授,主要从事交通运输规划与管理方面的研究。E-mail:longkejun@csust.edu.cn

中图分类号:

U491

基金项目:

国家自然科学基金资助项目(52172313); 湖南省科技创新计划(2020RC4048); 国家重点研发计划(2018YFB1600905-4); 湖南省科技厅重点领域研发计划(2019SK2171)


Research on the differences among vehicle merging behaviors at different service levels
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Affiliation:

School of Traffic and Transportation Engineering, Changsha University of Science & Technology, Changsha 410114, China

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    摘要:

    【目的】探索不同服务水平下车辆汇入行为的差异。【方法】采用无人机拍摄城市快速路合流区车辆的汇入过程,追踪838辆车的轨迹,获取4种服务水平下车辆的汇入起始位置、速度和最大加速度等汇入运动特征的数据,分析不同服务水平下车辆汇入行为的差异。【结果】不同服务水平下车辆汇入起始位置的概率分布有明显差异。一级和二级服务水平下,车辆可在加速车道上正常加速,但服务水平达到三级和四级时,车辆的汇入速度低于匝道限速;一级和二级服务水平下,车辆的最大加速度均值比在三级和四级服务水平下的高出了10%~30%;三级和四级服务水平下,在汇入前有明显的减速行为车辆的比例是一级和二级时的2~4倍。【结论】研究结果可为城市快速路设计服务水平的选择以及合流区交通组织优化设计提供参考。

    Abstract:

    [Purposes] The paper aims to explore the differences among vehicle merging behaviors at different service levels. [Methods] The data of vehicles′ merging process at merging area of urban expressway were recorded by drone, and 838 vehicles′ trajectories were extracted to obtain the features of merging behavior,including the start position, speed and maximum acceleration, the differences between these features at different service levels were also analyzed.[Findings] The probability distribution of the merging starting position at different levels is obviously different.At the first and the second service levels, the accelrtation of vehicles is normaly in the acceleration lane.However,when the service level reaches the third and the fourth levels, the vehicle's merging speed is lower than the on-ramp speed limit, and the average maximum acceleration of vehicles at the first and the second service levels is 10%-30% higher than that at the third and the fourth service levels; The number of vehicles which have significant deceleration behaviors before merging at the third and the fourth service levels is 2-4 times as much as the others.[Conclusions] The research results are helpful for the selection of the service level of expressway design and the optimal design of traffic organization at the merging area.

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引用本文

龙科军,李文达,何石坚.不同服务水平下车辆汇入行为差异的研究[J].长沙理工大学学报(自然科学版),2022,19(3):87-95.
LONG Kejun, LI Wenda, HE Shijian. Research on the differences among vehicle merging behaviors at different service levels[J]. Journal of Changsha University of Science & Technology (Natural Science),2022,19(3):87-95.

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  • 在线发布日期: 2022-10-24
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