基于全时空信息的交叉口混合交通流运行机理研究

项目名称： 基于全时空信息的交叉口混合交通流运行机理研究

项目编号： No.51278220

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 建筑科学

项目作者： 曲昭伟

作者单位： 吉林大学

项目金额： 80万元

中文摘要： 交叉口交通流运行机理是制定交通管控方案、提高交叉口运行效率和安全性的前提和基础。目前研究主要集中于特定断面下交通流基本运行规律的分析,缺乏交叉口交通流整体时空演化过程描述，难以全面阐释交叉口运行机理，从而制约了交叉口运行效率。本项目拟利用视频图像处理技术获取交叉口的全时空信息，提取交叉口范围内交通个体的运行轨迹，分析交叉口各交通个体在不同时刻、不同位置的速度、加速度、转弯半径、车头时距等的变化过程，研究交叉口各交通实体微观特性及其与交通流运行平稳性、交叉口释放特性等宏观特性的内在联系，建立交叉口微观交通运行特性的描述模型，构造交叉口整体交通运行特性与影响因素的关系模型，从而揭示交叉口交通流运行机理，为交叉口的时空资源优化提供理论依据，充实和完善交通工程学理论和方法。

中文关键词： 全时空；微观特性；作用机理；特性建模；

英文摘要： The operation mechanism of traffic flow is the base of traffic management and control as well as improving the running efficiency and security at intersection.The current research focus on the basic operation law of traffic flow in specific section,and lack in description of traffic flow synthetical spatiotemporal evolution at intersection. It is difficult to expalain the operation mechanism of intersection and restrict the running efficiency at intersection. In this project, synthetical spatiotemporal information of intersection is obtained by video image processing firstly. Secondly，the moving process of each object in the intersection is analyzed.The changing process of velocity, acceleration, truning radius, headway in the spatiotemporal are analyzed, too. And then the internal relations between microscopic characteristics of traffic individuals and macroscopic traffic property containing the operation stability of traffic flow and releasing feature are reseached.Furthermore, we construct the relation model between integrated operation characteristics and influencing factors of intersection, and reveal the operation mechanism of traffic flow. In conclusion, the research will provide a theoretical basis for road channelization design, traffic control signal design, traffic flow organization and various traffi

英文关键词： full time and space；microscopic characteristics；mechanism of action；feature modeling；