摘要
一级公路是我国公路网中承担干线功能和集散功能的多车道普通公路形式。混行交通在我国公路交通中普遍存在,路侧冲突对交通流运行速度产生影响,定量分析路侧冲突对交通流的影响是公路设计的重要工作。通过调查驾驶员对不同路侧冲突类型的直观印象,为路侧冲突定义了4个强度等级,选择国内7个具有代表性的典型一级公路路段进行交通流数据观测,采用方差分析技术对试验数据进行分析。结果表明:当采用自由流速度的85%位车速作为运行速度的评价指标时,路侧冲突强度的影响是显著的。通过建立起路侧冲突强度等级与85%位自由流速度之间的关系,量化了路侧冲突强度对一级公路运行速度的影响。
First class highway is one type of general multi-lane highway which takes the role of arterial function and collector-distributor function in domestic road network.Mixed traffic is very popular in Chinese highway system.Roadside conflict affects traffic operating speed,and quantitative analysis of influence of roadside conflict on traffic operating speed is an important job in highway design stage.Through investigation of driver＇s visual impression on different roadside conflict types,roadside conflict intensities were classified into four levels.Seven typical first class highway sections were chosen for observing traffic data,which were analysed by the method of variance analysis.The result indicates that when using V85 as the evaluation index of operating speed,the effect of roadside conflict is remarkable.By establishing the relationship between roadside conflict intensity level and V85 free flow operating speed,the influence of roadside conflict intensity on operating speed of first class highway was quantified.
出处
《公路交通科技》
CAS
CSCD
北大核心
2011年第8期136-139,153,共5页
Journal of Highway and Transportation Research and Development
关键词
交通工程
路侧冲突
运行速度
一级公路
混合交通
traffic engineering
roadside conflict
operating speed
first class highway
mixed traffic
