详情

原文传递 Turbo-Roundabout: Case Study of Driver Behavior and Kinematic Parameters of Light and Heavy Vehicles

题名：	Turbo-Roundabout: Case Study of Driver Behavior and Kinematic Parameters of Light and Heavy Vehicles
正文语种：	英文
作者：	Marco Guerrieri1; Raffaele Mauro2; Tomaz Tollazzi3
作者单位：	1Adjunct Professor, Qualified as Full Professor, Polytechnic School, Univ. of Palermo, Palermo 90144, Italy (corresponding author). 2Full Professor, Dept. of Civil, Environmental and Mechanical Engineering, Univ. of Trento, Trento 38123, Italy. 3Full Professor, Dept. for Roads and Traffic, Univ. of Maribor, Maribor 2000, Slovenia
关键词：	Turbo-roundabout; Traffic processes; Driver behaviour; Heavy vehicles; Digital image analysis
摘要：	This research compared kinematic and behavior parameters of light and heavy vehicles at turbo-roundabouts. This is of interest because heavy vehicles can influence turbo-roundabout functionality more than that of conventional roundabouts. The traffic arrival process at arms of a typical turbo-roundabout was studied. Using image-processing techniques, the trajectories of about 1,400 light vehicles and 300 heavy vehicles were examined at a roundabout entry, on the ring, and at the roundabout exit. Light vehicles had moderate average speeds lower than 25 km=h at the entry lanes, 15 m prior of the yield line, whereas heavy vehicles had an average speed of about 20 km=h on the same section. Significant differences were found in average acceleration: they were generally below 2 m=s2 on arm lanes and 1.5 m=s2 on circulating lanes for light vehicles, whereas those of heavy vehicles were 0.5 m=s2, much lower than the corresponding acceleration values of light vehicles. The values of the critical gap tc and follow-up time tf estimated for light vehicles ranged between tc = 4.03=5.48 s and tf =2.52–2.71 s respectively, whereas heavy vehicles had tc and tf values 15%–47% higher than those of light vehicles.
出版年：	2019
期刊名称：	Journal of Transportation Engineering
卷：	145
期：	6
页码：	1-11