摘要
为了有效降低高速公路出口匝道事故发生的可能性,研究不同类型出口匝道的安全性能。根据出口匝道在分流区与高速公路主线的衔接形式以及匝道车道数,将其分为类型Ⅰ、类型Ⅱ、类型Ⅲ、类型Ⅳ四类;建立了出口匝道事故数、事故严重程度与匝道类型以及其它变量之间的关系模型;通过分析事故数及事故严重度与不同匝道类型的关系,对四种不同类型匝道的安全性进行了排序。结果表明:从事故总数及事故严重性预测方面(从好到差),类型Ⅰ>类型Ⅲ>类型Ⅳ>类型Ⅱ。
In order to effectively decrease the possibility of accident at freeway exit ramps, this paper studied safety performances of different types of exit ramps. Firstly, according to the forms of connection between freeway mainline and exit rampsand the number of lanes, exit ramps were divided into four types, namely typeⅠ, typeⅡ, typeⅢ, typeⅣ. Secondly, crashpredicted models were established taking crash frequency, accidents severity, ramp types and other factors as variables. Finally, safety of four types of ramps were sorted by analyzing the relationship between crash frequency, accidents severity and ramptypes. The results of crash prediction models showed that the rank of safety performance is typeⅠ 〉 typeⅢ 〉 typeⅣ 〉 typeⅡ（from good to poor）.
作者
夏雪
郭唐仪
潘姝
XIA Xue;GUO Tangyi;PAN Shu(Jiangsu Lianyungang Highway Management Office,Lianyungang 222002,China;Nanjing University of Science and Technology,Nanjing 210096,China)
出处
《现代交通技术》
2018年第5期56-60,共5页
Modern Transportation Technology
