检索结果-南通市图书馆

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

引用

Journal of Traffic and Transportation Engineering(English Edition) 2020年第1期7卷 125-136页

作者： amirarsalan mehrara molan Mahdi Rezapour Khaled Ksaibati Department of Civil and Environmental Engineering California Polytechnic State UniversitySan Luis ObispoCA 93407USA Wyoming Technology Transfer Center Department of Civil and Architectural EngineeringUniversity of WyomingLaramieWY 82071USA

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.

关键词： Traffic barrier Roadside safety Truck Crash severity Ordinal logistic regression Wyoming

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Modeling traffic barriers crash severity by considering the effect of traffic barrier dimensions

引用

Journal of Modern Transportation 2019年第2期27卷 141-151页

作者： amirarsalan mehrara molan Mahdi Rezapour Khaled Ksaibati Wyoming Technology Transfer Center Department of Civil&Architectural EngineeringUniversity of Wyoming

Traffic barriers are in widespread all around the USA as safety countermeasures for reducing the severity of run-off-road crashes. The effect of traffic barriers’ dimension had been ignored in past real-world crash studies due to the considerable cost and time needed for collecting field data. This paper presented two new analytical models to investigate the effect of different variables on the severity of crashes involving traffic barriers, and end treatments. For this reason, a field survey was conducted on over 1.3 million linear feet of traffic barriers (approximately 4,176 miles road) in Wyoming to measure traffic barriers’ geometric features like height, length, offset, and slope rate. The collected data included 55% of all non-interstate roads of Wyoming. Based on results, the crashes involving box beam barriers were less severe than the crashes involved with W-beam or concrete barriers. The traffic barriers with a height between 28 and 31 in. were found safer than the traffic barriers shorter than 28 in., while there was no significant difference between the traffic barriers taller than 31 in. to those shorter than 28 in. in terms of crash severity. The end treatments located nearer to the traffic lane had lower crash severity.

关键词： Crash severity Run-off-road crashes Traffic barriers End treatments Traffic barrier dimensions Real-world crash analysis Wyoming

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

New vision on the Relationship between Income and Water Withdrawal in Industry Sector

引用

Natural Resources 2011年第3期2卷 191-196页

作者： Abdolnaser Hemati Mohsen mehrara Ali Sayehmiri 不详

This paper investigates the relationship between industrial water withdrawal (IWW) and income in selected world countries. The issue is addressed by means of a smooth transition regression (STR) model on cross section data of 132 countries in 2006. The results confirm the nonlinearity of the link between IWW and income. According to the results, the income elasticity of IWW is a bell-shaped curve. Therefore, the policies and management processes in water sector including water allocation between activities and reigns should take into account the development degree and also focus on income level, water scarcity and the economic, social and ecological structure in each country.

关键词： Water-Income STR NRBEKC Elasticity Socio-Economic Structure

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

New Vision on the Relationship between Income and Water Withdrawal in Industry Sector

引用

Natural Resources（自然资源） 2011年第3期

作者： Abdolnaser Hemati Mohsen mehrara Ali Sayehmiri

来源：评论

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：