北京市快速环路宏观基本图特征研究

交通运输系统工程与信息 ›› 2014, Vol. 14 ›› Issue (2): 199-205.

北京市快速环路宏观基本图特征研究

贺正冰¹，关伟^*1，樊玲玲¹，关积珍²

1.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，北京100044; 2.北京四通智能交通系统集成有限公司，北京100081

收稿日期:2013-08-06 修回日期:2013-11-14 出版日期:2014-04-25 发布日期:2014-07-07
作者简介:贺正冰（1982-），男，辽宁锦州人，讲师，博士.
基金资助:
国家高技术研究发展计划（863计划）主题项目（2011AA110303）

Characteristics of Macroscopic Fundamental Diagram for Beijing Urban Ring Freeways

HE Zheng-bing ¹，GUAN Wei ¹，FAN Ling-ling ¹ , GUAN Ji-zhen ²

1. MOE Key Laboratory for Urban Transportation Complex Systems Theory and Technology, Beijing Jiaotong University , Beijing100044, China;2. Beijing STONE Intelligent Transportation System Integration CO.，LTD.，Beijing100081, China

Received:2013-08-06 Revised:2013-11-14 Online:2014-04-25 Published:2014-07-07

摘要/Abstract

摘要：

对应于整个路网的宏观基本图反映了路网宏观变量间一种可再现的稳定的函数关系，该关系仅取决于路网属性和控制策略本身，而不依赖于具体交通需求.而作为世界上最大的城市之一，北京市的道路交通有着独一无二的特征.利用现有的高密度检测器数据，绘制了北京市快速环路的宏观基本图，在宏观上分析了北京市的交通特征；发现了北京市快速环路宏观基本图中不同于现有理论的特征，即在网络占有率方差与网络流量的对应关系中，二者亦可表现出相同的趋势，如较低占有率方差与较低网络流量间的对应关系.通过分析各环路交通拥堵的演化过程，认为北京市由中心向外扩散的放射形拥堵过程是形成这种特殊关系的内在因素.

关键词: 城市交通, 宏观基本图, 城市快速路, 拥堵, 回滞现象

Abstract:

A macroscopic fundamental diagram（MFD）gives an invariant functional relationship among macroscopic variables in a large urban area. Beijing as one of the largest cities in the world has a number of unique traffic features. A MFD is presented for Beijing urban ring freeways by using traffic detector data. It shows the characteristics of a MFD pertaining to Beijing urban ring freeways, and provides insight into traffic conditions in Beijing. A pattern that lower occupancy variance is associated with lower network flow is observed; it is different from present findings. The observation is investigated and is further attributed to outsync of5th ring and a radial spread of congestion in Beijing.

Key words: urban traffic, macroscopic fundamental diagram, urban freeway, congestion, hysteresis phenomena

中图分类号:

U268.6

贺正冰，关伟，樊玲玲，关积珍. 北京市快速环路宏观基本图特征研究[J]. 交通运输系统工程与信息, 2014, 14(2): 199-205.

HE Zheng-bing,GUAN Wei,FAN Ling-ling,GUAN Ji-zhen . Characteristics of Macroscopic Fundamental Diagram for Beijing Urban Ring Freeways[J]. Journal of Transportation Systems Engineering and Information Technology, 2014, 14(2): 199-205.

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