无信号交叉口的交通流仿真研究

发布时间：2018-02-24 08:36

本文关键词： 微观交通仿真无信号交叉口可接受间隙理论　出处：《北京邮电大学》2013年硕士论文　论文类型：学位论文

【摘要】：伴随着城市交通的快速发展,随之而来的交通问题也越来越受到人们的重视。智能交通的兴起正是为了更好地解决交通问题,而利用计算机技术对交通进行仿真模拟,以其便利性、低成本、效果直观等特点,逐渐成为了智能交通领域中的有效工具。交通仿真技术兴起于国外,目前应用比较广泛的仿真模型也都是根据国外的交通特点建立的。我国的交通状况和国外相比有着很大的不同,混合交通流、交通参与者的弱规则性行为、交通法律法规不完备、交通参与者素质不高等,都为模型的建立和校验造成了很大的影响。所以,在引入和借鉴国外交通仿真模型的同时,建立符合我国具体交通情况的仿真模型将是一件重要的工作。本文的研究和工作是在FlowSim3.0这款具有自主知识产权的微观交通仿真软件的开发过程中进行的。交通仿真的过程中,对于交叉口的仿真是难点所在,如何能有效合理地解决车辆冲突问题是影响仿真结果的重要因素。利用经典的可接受间隙模型来解决无信号交叉口的冲突问题,可以发现当车流量比较大时,次要道路的车辆将长时间得不到可以穿行的间隙,不符合中国的实际情况。本文通过观察实际交通流,发现了基于“路权翻转”的交通流特性,在冲突道路路权区分不明显时,可以很好的模拟次要道路和主要道路上车辆的通行过程,使仿真结果与实际观测结果的误差在可接受的范围内。
[Abstract]:With the rapid development of urban traffic, people pay more and more attention to traffic problems. The rise of intelligent transportation is to solve traffic problems better, and use computer technology to simulate traffic. Because of its convenience, low cost and intuitive effect, it has gradually become an effective tool in the field of intelligent transportation. Traffic simulation technology is developed in foreign countries, and the widely used simulation models are also established according to the characteristics of foreign traffic. The traffic situation of our country is very different from that of foreign countries. The weak regular behavior of traffic participants, the incomplete traffic laws and regulations, and the poor quality of traffic participants all have a great impact on the establishment and verification of the model. Therefore, while introducing and learning from foreign traffic simulation models, It will be an important task to establish a simulation model in accordance with the specific traffic situation in China. The research and work of this paper is carried out in the development of FlowSim3.0, a microscopic traffic simulation software with independent intellectual property rights. In the process of traffic simulation, the simulation of intersection is difficult. How to solve the vehicle conflict problem effectively and reasonably is an important factor affecting the simulation results. Using the classical acceptable clearance model to solve the conflict problem at the unsignalized intersection, it can be found that when the traffic flow is large, Secondary road vehicles will not be able to cross the gap for a long time, not in line with the actual situation in China. By observing the actual traffic flow, this paper finds out the traffic flow characteristics based on the "right reversal". When the distinction of the right of road in the conflict road is not obvious, it can well simulate the traffic process of the secondary road and the vehicle on the main road. The error between the simulation result and the actual observation result is within the acceptable range.
【学位授予单位】：北京邮电大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TP391.9;U491.112

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