摘要
为了掌握快速路网的宏观基本图特征,应用上海市浦西外环以内的快速路检测器数据,绘制上海市快速路的宏观基本图,并分析其特征.运用近3年来共计18d的交通流数据,验证了上海市快速路宏观基本图的存在性.发现相比于周末,工作日宏观基本图有更多散点,快速路网宏观基本图中存在磁滞现象.对磁滞现象进行分析,发现晚高峰交通拥堵消散时路网中交通流密度分布更不均匀,且拥堵路段交通流相互干扰因而流量更低,二者共同导致路网磁滞现象的产生,而且后者的影响更大.
In order to obtain the characteristics of Macroscopic Fundamental Diagram（MFD）of expressway,the MFD of Shanghai expressway is presented and its characteristics are analyzed using detector data.Firstly,the existence of MFD of Shanghai is verified using traffic flow data for 18 days in the last 3years.Secondly,it is found that the MFD of working days have more scattered points than that of weekends,which shows that the expressway＇s MFD has hysteresis phenomenon.Finally,hysteresis phenomenon is analyzed and it is found that the road network density distribution is more uneven and the congested roads have lower volume in the offset of congestion at evening peak.The two lead to the hysteresis of the road network,and the latter has a greater impact.
出处
《武汉理工大学学报（交通科学与工程版）》
2016年第3期519-525,共7页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
基金
国家自然科学基金项目(51308409)
国家自然科学基金重点项目(51238008)
中国博士后科学基金项目(2013M541545)资助
关键词
交通流
宏观基本图
快速路
检测器数据
磁滞现象
traffic flow
macroscopic fundamental diagram
expressway
detector data
hysteresis
