东南大学学报（英文版）2016，Vol.32Issue(1)：106-111,6.DOI:10.3969/j.issn.1003-7985.2016.01.018
上海快速路网宏观交通流基本图研究
Study of macroscopic fundamental diagram on Shanghai urban expressway network in China
摘要
Abstract
The macroscopic fundamental diagram MFD is studied to obtain the aggregate behavior of traffic in cities. This paper investigates the existence and the characteristics of different types of daily MFD for the Shanghai urban expressway network.The existence of MFD in the Shanghai urban expressway network is proved based on two weeks’ data.Moreover the hysteresis phenomena is present in most days and the network exhibits different hysteresis loops under different traffic situations. The relationship between the hysteresis phenomena and the inhomogeneity of traffic distribution is verified.The MFDs in the years of 2009 and 2012 are compared.The hysteresis loop still exists in 2012 which further verifies the existence of the hysteresis phenomenon.The direct relationship between the length of the hysteresis loop ΔO and the congestion is proved based on sufficient data.The width of the hysteresis loop i.e. the drop in network flow ΔQ has no relationship with the congestion and it varies from day to day under different traffic situations.关键词
宏观交通流基本图/磁滞现象/城市快速路网/拥堵指数Key words
macroscopic fundamental diagram/MFD hysteresis phenomena/urban expressway network/index of congestion分类
交通运输引用本文复制引用
石心怡,林航飞..上海快速路网宏观交通流基本图研究[J].东南大学学报（英文版）,2016,32(1):106-111,6.基金项目
The National Natural Science Foundation of China No．51238008． （）
