考虑大型车辆遮挡因素的高速公路路侧标志设置效果评价研究

发布时间：2018-02-26 10:19

本文关键词： 高速公路交通标志标志设置标志遮挡数学模型综合评价　出处：《长安大学》2014年硕士论文　论文类型：学位论文

【摘要】：交通标志作为管制交通、传递路网信息的安全设施，在现代道路交通管理中发挥着重要的作用。因高速公路具有道路封闭、车辆行驶速度快的特点，其交通标志所起的指引作用更加重要。现阶段高速公路交通标志的设置主要考虑的是设计设置参数与驾驶员行为之间的相互作用关系，并没有考虑所在道路交通流对其设置效果的影响。而在实际情况中，行驶在高速公路快车道上的小车驾驶员在视认道路右侧的立柱式交通标志时，视线经常会被慢车道上车型高大的大车所遮挡，造成交通标志设置的“失效”。因此，在高速公路的标志设置或改建时，亟需同时考虑所在路段的交通流因素及标志被大车遮挡的因素。本文所研究的关键内容即是对路侧交通标志被大车遮挡的情况进行模拟与分析。研究过程主要分为3个阶段，分别为资料收集阶段、模型系统建立阶段和模型系统应用阶段。资料收集阶段主要总结国内外已有模型的研究角度、方法，以及理论基础，分析模型考虑的场景是否恰当、全面，最后考虑模型所得出结果的实用价值。在模型系统建立阶段，将首先进行模型场景的逻辑设计，，进而确定相应的指标参数和影响因素，然后编制判断遮挡是否发生的算法，最后研究各场景发生的概率。在模型系统应用阶段，将会选取实际道路，运用模型系统对其进行分析，同时反馈应用中遇到的问题。本文在以上工作的基础上，构建出了基于遮挡时间的路侧标志遮挡模型，同时结合现有高速公路路侧标志的相关设计设置理论，建立起了“指路标志—驾驶员操作行为—交通流运行状态”相互作用的交通标志设置效果综合评价系统。然后运用综合效果评价系统对沪（上海）宁（南京）高速常州段某处的路侧标志进行了设置效果评价。
[Abstract]:Traffic signs, as safety facilities for controlling traffic and transmitting road network information, play an important role in modern road traffic management. Because of the characteristics of closed roads and fast driving speed of vehicles, traffic signs play an important role in modern road traffic management. At this stage, the main consideration of freeway traffic sign setting is the interaction between design setting parameters and driver's behavior. The impact of the traffic flow on the setting effect is not taken into account. But in practice, when the driver of a small car driving on the freeway is looking at the column traffic sign on the right side of the road, The line of sight is often blocked by large cars with large cars on the slow lane, causing "invalidation" of traffic signs. Therefore, when freeway signs are set up or rebuilt, It is urgent to consider the traffic flow factor and the factor that the sign is blocked by the big car at the same time. The key content of this paper is to simulate and analyze the traffic signs on the side of the road which are blocked by large vehicles. The research process is mainly divided into three stages, namely, the data collection stage. The stage of model system establishment and the stage of model system application. The data collection stage mainly summarizes the research angle, method and theoretical basis of the existing models both at home and abroad, and analyzes whether the scenario considered by the model is appropriate and comprehensive. Finally, considering the practical value of the results obtained from the model, the logical design of the model scene will be carried out at the stage of establishing the model system, and then the corresponding index parameters and influencing factors will be determined, and then an algorithm for judging whether the occlusion occurs or not will be worked out. Finally, the probability of each scene is studied. In the application stage of the model system, the actual road will be selected, and the model system will be used to analyze it, and at the same time, the problems encountered in the application will be feedback. On the basis of the above work, this paper constructs a road side sign occlusion model based on occlusion time, and combines with the existing freeway side sign design and setting theory. In this paper, a comprehensive evaluation system of traffic sign setting effect is established, which is the interaction of "guide sign, driver's operation behavior and traffic flow running state". Then the comprehensive effect evaluation system is applied to Shanghai (Shanghai) and Nanjing (Nanjing). The setting effect of the side signs in the section of Changzhou is evaluated.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U491.52

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