有轨电车交叉口信号优先策略研究及其VISSIM仿真实现

发布时间：2019-01-01 10:23

【摘要】：有轨电车交叉口优先控制是保证有轨电车快速通行、提高乘客舒适度的关键所在。优先控制在给予有轨电车更多通行权利的同时往往造成交叉口车辆运行效率的下降,引发排队拥堵。目前常见的优先控制策略各有其特点及应用场景,在具体实施过程中难以判断其适用性,而交通仿真技术可以再现交通流运行规律,并可以对待实施方案进行仿真评价,给出量化的数据供用户决策。将交通仿真应用于有轨电车交叉口优先,可以对各优先策略的实施效果进行预判,进而引导更有效的管理控制,提高交叉口的运行效率。本文首先对有轨电车交叉口行车过程中的影响因素进行了分析,包括了车辆性能、路权形式、轨道布置方式等,在VISSIM建模过程中以上因素都将通过仿真参数、路网布置等形式体现。接着介绍了信号优先策略的分类以及交叉口信号控制系统的组成,并对无优先、绝对优先、相对优先、单点平衡控制策略的具体实施过程进行了分析。随后实现了VISSIM中交叉口路网的建模,并在信号逻辑实现的过程中使用了模块化的方法,使各线位类型交叉口的信号控制逻辑都可以通过不同处理模块串联的方式来实现。最后实现了基于VISSIM COM接口的二次开发,提供了用户操作界面供其输入自定义仿真参数,并提供了可视化的评价结果以及汇总报表。在分析了各策略的评价结果后,得出单点平衡策略可以较好地平衡有轨电车的通行优先与交叉口车辆的排队拥堵,该策略在保证公路最小通行权利的同时会给载客较多的有轨电车更多机会的通行优先。
[Abstract]:The priority control of tram intersection is the key to ensure the tram to pass quickly and improve the passenger comfort. Priority control not only gives more rights to trams, but also leads to the decrease of traffic efficiency at intersections, which leads to queue congestion. At present, the common priority control strategies have their own characteristics and application scenarios, so it is difficult to judge their applicability in the process of implementation. The traffic simulation technology can reproduce the traffic flow operation law, and can simulate and evaluate the implementation scheme. The quantized data is given for the user to make decision. The application of traffic simulation in tram intersection priority can predict the effect of each priority strategy, and then lead to more effective management and control, so as to improve the operational efficiency of the intersection. In this paper, the influence factors of tram intersection are analyzed firstly, including vehicle performance, road weight form, track layout and so on. The above factors will be simulated in the process of VISSIM modeling. Road network layout and other forms. Then the classification of signal priority strategy and the composition of signal control system at intersection are introduced, and the implementation process of no priority, absolute priority, relative priority and single point balance control strategy is analyzed. Then the modeling of intersection network in VISSIM is realized, and the modularization method is used in the process of signal logic realization, so that the signal control logic of each line type intersection can be realized by different processing modules in series. Finally, the secondary development based on VISSIM COM interface is realized, and the user interface is provided to input the self-defined simulation parameters, and the visual evaluation results and summary report are provided. After analyzing the evaluation results of each strategy, it is concluded that the single point balancing strategy can better balance the tram traffic priority with the traffic queue congestion at the intersection. This strategy not only guarantees the minimum access rights of roads, but also gives more opportunities to trams with more passengers.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U491.54

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