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原文传递 Examining Injury Severity of Moped and Motorcycle Occupants with Real-Time Traffic and Weather Data

题名：	Examining Injury Severity of Moped and Motorcycle Occupants with Real-Time Traffic and Weather Data
其他题名：	Abdel-Aty,M.,A.-A.Ekrama,H.Huang,and K.Choi.2011."A study on crashes related to visibility obstruction due to fog and smoke."Accid.Anal.Prev.43(5):1730-1737.https://doi.org/10.1016/j.aap.2011.04.003.
正文语种：	英文
作者：	Athanasios Theofilatos
关键词：	Crash injury;Urban motorways;Severity;Real-time data;Weather data;Powered two-wheelers
摘要：	Currently studies exploring the effect of real-time traffic and weather characteristics on crash severity are relatively limited, and studies focusing on powered two-wheelers (PTWs) are even fewer. The objective of this paper is to add to current knowledge through the investigation of PTW occupant injury severity on the urban motorway Attica Tollway in Athens, Greece. For that purpose, 163 crashes (23 severe/fatal and 140 slight) that occurred between 2006 and 2011 were analyzed by considering real-time traffic and weather parameters. The required crash data was extracted from the Greek crash database of the National Technical University of Athens and also Attica Tollway. Traffic data were extracted from the Traffic Management Center of Attica Tollway, and weather data were extracted from the Hydrological Observatory of Athens (HOA). To reduce data dimensionality and to overcome multicollinearity between variables, a two-step approach was followed. First, principal component analysis and random forests were used as preliminary analyses. To account for the low number of and proportion of killed and severely injured (KSI) occupants, a Firth logistic regression was then applied. Results showed that in general, traffic and speed variations caused more severe injuries whereas weather parameters seemed to have no effect. It was also found that mean speeds and variations in volumes of trucks increased the crash injury severity of PTW crashes, but it was interesting that an increased proportion of trucks led to slighter injuries. The findings of this paper are considered promising and will contribute to better understanding of occupant injury severity on urban motorways by focusing on PTWs.
出版年：	2018
论文唯一标识：	P-72Y2018V144N11003
英文栏目名称：	TECHNICAL PAPERS
doi：	10.1061/JTEPBS.0000193
期刊名称：	Journal of Transportation Engineering
拼音刊名(出版物代码)：	P-72
卷：	144
期：	11
页码：	11-22