摘要
车流密度、行车速度、交通流量是反映交通流特征的3个基本参数,本文从交通流的本质特征入手对车流密度与行车速度的关系进行了研究,建立了三段式密度-速度理论关系模型,并由此进一步讨论了交通流量与行车速度、交通流量与车流密度之间的理论关系．文章明确指出了格林希尔茨模型缺陷的本质所在,同时对交通流三段模式的产生机理进行了探讨．
Flow, speed, and density are three basic variables that can be used to describe the traffic flow characteristics, The relationship among them is the foundation of the traffic engineering research. This paper started at the basic character of the traffic flow, deduced the theoretical formulas of the relationship between traffic density and vehicle speed according to the three phases, and further discussed the theoretical formulas of the relationship between traffic volume and vehicle speed, traffic volume and traffic flow density. The formulas accord with the curves of field survey results.
出处
《北京工业大学学报》
EI
CAS
CSCD
北大核心
2006年第1期43-47,共5页
Journal of Beijing University of Technology
关键词
交通流
车流密度
行车速度
交通流量
traffic flow
traffic flow density
vehicle speed
traffic volume
