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交叉路口是城市交通路网的基本要素,对它们的控制能力,决定了整座城市交通路网系统的性能。首先介绍了国内外交叉口的概况以及优化改善的现有成果,然后对VISSIM软件进行介绍,最后以成都交大路金府路交叉路口为研究对象,对其进行现状分析,提出优化方案,利用VISSIM仿真软件进行仿真模拟,采用系统中的数据采集、排队长度、延误时间等来对优化方案进行评价。结果表明:采取有效的优化方案,能够从根本上缓解成都市交通拥堵的压力。
Intersections are the basic elements of an urban traffic network, and their ability to control determines the performance of the entire city’s traffic network. First of all, it introduces the general situation of domestic and international intersections and the existing results of optimization and improvement. Then it introduces the VISSIM software. Finally, taking the intersection of Jinfu Road and Chengdu Jiaotong University as the research object, this paper analyzes the current situation and puts forward the optimization scheme. Simulation software simulation, using the system data acquisition, queue length, delay time to evaluate the optimization program. The results show that adopting an effective optimization plan can fundamentally alleviate the pressure of traffic congestion in Chengdu.