基于交叉口可靠性的公交优先信号配时优化模型

发布时间：2018-03-15 18:28

本文选题：智能交通　切入点：可靠性　出处：《交通运输系统工程与信息》2017年02期 　论文类型：期刊论文

【摘要】：公交信号优先被广泛应用于提高道路通行能力和服务水平等方面,但是,公交信号优先经常会破坏路网,从而导致交叉口可靠性降低.因此,交叉口可靠性是交通信号设计中需考虑的一个重要问题.本研究针对单点交叉口提出了基于可靠性的公交信号优先配时优化模型,将人均延误最小化作为目标函数,将交叉口相位清空可靠度指标作为一个重要约束条件,该模型在优化信号配时的过程中不仅降低了人均延误,并且保证了交叉口的可靠性.本研究将该优化模型应用于单点交叉口,通过分析影响参数得到:仅提高可靠性要求,延误时间会非线性增加;若一味地降低总延误会导致低可靠性.最后,通过案例分析将传统模型与本研究模型进行对比分析,验证了本研究所提出模型的实用性.
[Abstract]:Bus signal priority is widely used to improve road traffic capacity and service level. However, bus signal priority often destroys road network, which leads to lower reliability of intersections. The reliability of intersections is an important problem to be considered in traffic signal design. In this paper, an optimal model of bus signal priority timing based on reliability is proposed for single point intersections, which takes the per capita delay minimization as the objective function. The reliability index of phase emptying at intersection is regarded as an important constraint condition. The model not only reduces the delay per person in the process of optimizing signal timing, but also reduces the delay per person. And the reliability of intersection is ensured. In this study, the optimization model is applied to single point intersection. By analyzing the influence parameters, it is concluded that the delay time will increase nonlinear if the reliability requirement is raised only; If the total delay is reduced blindly, it will lead to low reliability. Finally, the feasibility of the proposed model is verified by comparing the traditional model with the research model through a case study.
【作者单位】：北京交通大学城市交通复杂系统理论与技术教育部重点实验室;北京交通大学交通运输学院;
【基金】：基本科研业务费(2015JBM048) 北京市教育委员会共建项目(T13H100020)~~
【分类号】：U491.54

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