摘要
提出一种利用城市快速道路交通录像资料测量交通流模型中各种参数的方法.以北京市一个路段的实际录像资料为例,通过测量和分析获得Kerner非线性模型中的临界密度、宽运动堵塞的传播速度和Greenshields模型中的畅行速度等参数.结果显示,这是一种操作性强、成本很低且有多种应用前景的交通流测量新方法.
A method is proposed to measure the various parameters of traffic flow models applying video tape information of urban expressway traffic. A practical example is based on some video data got from a section of a highway of Beijing. Through measurement and analysis the critical density of Kerner＇ s non-linear model, the propagation speed of the wide moving jam and the unimpeded velocity of Greenshields＇ s model are obtained. The results show that the new method is serviceable, low-priced and widely useful to traffic flow measuring.
出处
《复旦学报（自然科学版）》
CAS
CSCD
北大核心
2008年第2期147-152,共6页
Journal of Fudan University：Natural Science
关键词
交通流模型
测量
临界密度
宽运动堵塞
畅行速度
traffic flow model
measurement
critical density
wide moving jam
unimpeded velocity
