基于路网运行效率的高速公路交通事故诱导研究

发布时间：2018-05-26 11:49

本文选题：路网运行效率 + 交通事故　；参考：《长安大学》2015年硕士论文

【摘要】：近年来,我国高速公路交通事故频繁发生,交通诱导在缓解交通拥堵方面起着越来越重要的作用,为了保障路网的运行效率与交通诱导的实施,要求制定的诱导区域不仅能过缓解交通拥堵,还保证交通事故的间接影响范围最小。因此,本文提出了一种基于路网运行效率的交通诱导方法。首先,针对交通诱导区域内交通运行效率,从路段、路网层面分别建立高速公路交通事故条件下交通运行效率评价指标与评价方法,制定评价流程。其次,对事故后道路剩余通行能力估算、决策树预测事故持续时间和交通波预测事故影响范围等技术进行了研究,提出了路网环境下的交通诱导技术路线,根据技术路线,确定事故信息发布的时间范围及空间范围,同时判断是否采取交通诱导,并采用交通波估算交通诱导最迟时间,针对交通诱导后交通流的重新分配,分析交通诱导后出行者的Logit随机路径选择模型。最后,对制定诱导区域时需要考虑的路网基础数据、分流路径及诱导节点等因素进行分析,在此基础上,综合考虑诱导区域需要缓解交通拥堵和尽可能小两个方面,提出了基于路网运行效率的诱导区域选择判断标准及确定方法,使用TransModeler交通仿真软件模拟诱导区域内的交通流重新分配,制定基于TransModeler的最小诱导区域确定流程。并以重庆渝武高速和212国道组成的路网为例,验证该方法的科学性。本文提出了一种结合TransModeler交通仿真软件的交通诱导区域确定方法,不仅可以缓解交通拥堵,还能确保交通事故的间接影响范围最小,保障了路网的运行效率,具有一定的实用意义。
[Abstract]:In recent years, highway traffic accidents occur frequently in our country, traffic guidance plays an increasingly important role in alleviating traffic congestion, in order to ensure the efficiency of the road network and the implementation of traffic guidance. The required guidance area can not only alleviate traffic congestion, but also ensure the least indirect impact of traffic accidents. Therefore, a traffic guidance method based on network operation efficiency is proposed in this paper. Firstly, aiming at the traffic operation efficiency in the traffic guidance area, the evaluation indexes and methods of traffic operation efficiency under the condition of expressway traffic accidents are established from the road section and road network level, and the evaluation process is established. Secondly, the techniques of estimating the residual capacity of the road after the accident, predicting the duration of the accident by decision tree and predicting the impact range of the accident by the traffic wave are studied, and the technical route of traffic guidance under the road network environment is put forward, according to the technical route, To determine the time and space range of accident information release, to determine whether traffic guidance is adopted, and to estimate the latest time of traffic guidance by using traffic waves, aiming at the redistribution of traffic flow after traffic guidance. This paper analyzes the Logit random path selection model for travelers after traffic guidance. Finally, the basic road network data, the diversion path and the induced node are analyzed, and the two aspects of traffic congestion alleviation and minimization are considered comprehensively, such as the road network basic data, the diversion path and the induced node, which need to be considered when making the induced area. In this paper, the criteria and method of selecting and determining the guiding area based on the operation efficiency of the road network are put forward. The traffic flow redistribution in the induced area is simulated by using the TransModeler traffic simulation software, and the process of determining the minimum induced area based on TransModeler is established. Taking the road network of Chongqing Yuwu Expressway and 212 National Highway as an example, this method is proved to be scientific. In this paper, a new method of determining traffic guidance area is proposed, which can not only alleviate traffic congestion, but also ensure the least indirect influence range of traffic accidents and ensure the efficiency of road network operation. It has certain practical significance.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U491

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