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原文传递 Analysis of Kinematic Parameters and Driver Behavior at Turbo Roundabouts

题名：	Analysis of Kinematic Parameters and Driver Behavior at Turbo Roundabouts
其他题名：	Ahmed,A.,Sadullah,A.F.M.,and Shukri Yahya,A.(2016)."Field study on the behavior of right-turning vehicles in Malaysia and their contribution on the safety of unsignalized intersections."Transp.Res.Part F:Traffic Psychol.Behav.,42(Oct),433-446.
正文语种：	英文
作者：	Marco Guerrieri
关键词：	Turbo-roundabout;Traffic processes;Driver behavior;Digital image processing technique
摘要：	This study focuses on both vehicle kinematic parameters (speed and acceleration) and behavior parameters (critical interval and follow-up time) of drivers at turbo-roundabouts. Empirical evaluations of such parameters can be helpful in calibrating traffic microsimulation models or assigning behavior parameters to closed-form capacity models in turbo-roundabouts (gap-acceptance capacity models) and are also related to evaluation of vehicles pollutant emissions. The research was based on traffic process observed in the first turbo-roundabout implemented in the city of Maribor in Slovenia. In 2016 a great number of traffic samples were taken with high-frame-rate video recordings [>50 frames per second (fps)]. All vehicle trajectories were obtained with the methods and algorithms typical of the digital imageprocessing technique (DIP) by filtering the discrete signal of vehicle trajectories f(t)_i with wavelet analysis. The research results showed that vehicle speeds on entry lanes are rather moderate (below 25 km=h, 15 m prior to the Yield line), whereas accelerations usually have values inferior to 2 m=s～2 on arm lanes and to 1.5 m=s～2 on ring lanes. The critical intervals t_c [distributed according to an Erlang probability distribution function (PDF)] and follow-up headways t_f (distributed according to an inverse Gaussian PDF) have, on the other hand, values in ranges of t_c = 4.03-5.48 s and t_f = 2.52-2.71 s, respectively, according to the right- or left-turn lane and to the major or minor entry in question.
出版年：	2018
论文唯一标识：	P-72Y2018V144N06006
英文栏目名称：	TECHNICAL PAPERS
doi：	10.1061/JTEPBS.0000129
期刊名称：	Journal of Transportation Engineering
拼音刊名(出版物代码)：	P-72
卷：	144
期：	06
页码：	42-53