Investigating the relationship between crash severity,traffic barrier type,and vehicle type in crashes involving traffic barrier

作     者：Amirarsalan Mehrara Molan Mahdi Rezapour Khaled Ksaibati Amirarsalan Mehrara Molan;Mahdi Rezapour;Khaled Ksaibati

作者机构：Department of Civil and Environmental EngineeringCalifornia Polytechnic State UniversitySan Luis ObispoCA 93407USA Wyoming Technology Transfer CenterDepartment of Civil and Architectural EngineeringUniversity of WyomingLaramieWY 82071USA 

出 版 物：《Journal of Traffic and Transportation Engineering(English Edition)》 (交通运输工程学报（英文版）)

年 卷 期：2020年第7卷第1期

页      面：125-136页

核心收录：

学科分类：03[法学] 1201[管理学-管理科学与工程(可授管理学、工学学位)] 08[工学] 0838[工学-公安技术] 0813[工学-建筑学] 0814[工学-土木工程] 0823[工学-交通运输工程] 0306[法学-公安学] 

基　　金：part of project#RS03218 funded by the Wyoming Department of Transportation(WYDOT) 

主　　题：Traffic barrier Roadside safety Truck Crash severity Ordinal logistic regression Wyoming 

摘      要：Roadside safety is one of the important components of highway systems due to its considerable rate of high-severity *** barriers play a key role in reducing the crash severity and saving more lives on roadsides but choosing an inappropriate traffic barrier could decrease traffic barriers’*** paper investigated the variables affecting crash severity in different traffic barrier types(cable,guardrail,and rigid)and vehicle types(truck,and non-truck).For this purpose,an ordinal logistic regression approach was conducted on the crash data collected between 2007 and 2016 in *** to the results,different traffic barrier types show different relationships to crash severity based on posted speed limit at the *** guardrail segments,a high-severity crash is more likely when the posted speed limit is more than 55 mph;however,cable barrier crashes were less severe in high-speed limit(55 mph)*** light vehicles were more vulnerable to crashes hitting rigid barriers,no significant difference was found between performances of cable and rigid barriers in terms of truck crash *** analytical models proposed in this study would make a clear view for designers and decision-makers in selecting the most appropriate traffic ***,the effective factors introduced in each model could be used to rank the risk posed by existing traffic barrier segments based on traffic barrier type,truck volume percentage,and other highway characteristics.