城市道路指路信息对进口道车流交织长度及通行能力的影响

发布时间：2018-04-02 22:34

本文选题：交通工程　切入点：指路信息　出处：《公路交通科技》2014年09期

【摘要】：基于高速公路交织段的概念,结合城市道路间断流运行特征及路侧指路信息对交织车辆的影响机理,提出城市道路交叉口进口道车流实际交织长度的确定方法。根据道路交通设计特征及驾驶员变道行为特征分别确定了城市道路进口道交织段的起讫点。选取上海市典型交叉口对车辆换道行为及微观行车特征进行视频观测,共获得159个有效样本,分析了车辆换道决策点在信息指示标志附近的分布规律,结果显示,换道决策点在信息指示标志附近呈正态分布。结合指路信息的影响改进了现有交织段通行能力计算模型,比较了该交叉口三个典型断面的通行能力:停车线断面、交织段断面、路段断面,并指出随指路信息位置变化时交织段通行能力的变化趋势,据此提出指路信息最佳设置位置。
[Abstract]:Based on the concept of interleaving section of expressway, combined with the operation characteristics of urban road discontinuous flow and the influence mechanism of road side information on interleaved vehicle, a method for determining the actual interlaced length of traffic flow at the entrance of urban road intersection is put forward.According to the characteristics of road traffic design and driver's changing behavior, the starting and ending points of intertwined section of urban road entrance are determined respectively.A total of 159 effective samples were obtained from the video observation of vehicle changing behavior and microscopic driving characteristics at typical intersections in Shanghai. The distribution of the decision points of vehicle changing in the vicinity of information indication signs was analyzed, and the results showed that,The switch decision points are normally distributed near the information indicator.Combined with the influence of road information, the existing interleaving section capacity calculation model is improved, and the capacity of three typical sections of the intersection is compared: parking line section, interleaving section section, section section, section section, and so on.It also points out the changing trend of the capacity of interleaved section with the change of the location of the guiding information, and puts forward the best location of the information of the guide.
【作者单位】：同济大学道路与交通工程教育部重点实验室;
【基金】：国家自然科学基金项目(51178344)
【分类号】：U491

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