Delay Estimates of Mixed Traffic Flow at Signalized Intersections in China  

作　　者：苏岳龙 魏铮 程思瀚 姚丹亚 张毅 李力 

机构地区：[1]Tsinghua National Laboratory for Information Science and Technology,Department of Automation,Tsinghua University [2]Research Institute of Information TechnologySchool of Information Science and Technology,Tsinghua University

出　　处：《Tsinghua Science and Technology》2009年第2期157-160,共4页清华大学学报（自然科学版（英文版）

基　　金：Partly supported by the National High-Tech Research and Development (863)Program of China(Nos.2006AA11Z208 and 2006AA11Z229);the National Key Basic Research and Development (973)Program of China(No.2006CB705506);the National Natural Science Foundation of China(Nos.60774034,60721003,and 50708055)

摘　　要：Two characteristics of Chinese mixed traffic invalidate the conventional queuing delay estimates for western countries. First, the driving characteristics of Chinese drivers lead to different delays even though the other conditions are the same. Second, urban traffic flow in China is often hindered by pedestrians at intersections, such that imported intelligent traffic control systems do not work appropriately. Typical delay estimates for Chinese conditions were obtained from data for over 500 vehicle queues in Beijing collected using charge coupled device （CCD） cameras. The results show that the delays mainly depend on the pro- portion and positions of heavy vehicles in the queue, as well as the start-up situations （with or without interference）. A simplified delay estimation model considers vehicle types and positions that compares well with the observed traffic delays.Two characteristics of Chinese mixed traffic invalidate the conventional queuing delay estimates for western countries. First, the driving characteristics of Chinese drivers lead to different delays even though the other conditions are the same. Second, urban traffic flow in China is often hindered by pedestrians at intersections, such that imported intelligent traffic control systems do not work appropriately. Typical delay estimates for Chinese conditions were obtained from data for over 500 vehicle queues in Beijing collected using charge coupled device （CCD） cameras. The results show that the delays mainly depend on the pro- portion and positions of heavy vehicles in the queue, as well as the start-up situations （with or without interference）. A simplified delay estimation model considers vehicle types and positions that compares well with the observed traffic delays.

关 键 词：vehicle queuing traffic delays signalized intersections 

分 类 号：U491.23[交通运输工程—交通运输规划与管理]