信号交叉口下游车速离散特性  

Speed Dispersion Characteristics of Backward Section of Signalized Intersection

作　　者：李爱增[1] 刘金阳[2] 李文权[3] 

机构地区：[1]河南城建学院交通运输工程学院,河南平顶山467036 [2]合肥工业大学交通运输工程学院,安徽合肥230009 [3]东南大学交通学院,江苏南京210096

出　　处：《公路交通科技》2015年第12期114-119,127,共7页Journal of Highway and Transportation Research and Development

基　　金：国家高技术研究发展计划(八六三计划)项目(2007AA11Z210);国家自然科学基金项目(50978057)

摘　　要：采用路侧激光交通调查设备对城市道路信号交叉口下游12个断面的车速进行调查,得到5个车道12个断面的车速值。采用回归分析方法利用11种回归曲线对各车道车速与距离的关系进行分析,建立了各车道高峰和平峰时段的车速回归方程。对高峰和平峰时段各车道同一断面车速平均值与距离的关系进行分析,得到了相应的回归关系模型。回归分析表明:除了第1车道外,各车道车速与距离具有较好的相关性;各车道同一断面车速平均值与距离具有较强的相关性。研究结果表明:高峰和平峰时段车速在距上游交叉口700 m左右趋于离散;平峰时段车速略高于高峰时段,700 m之后高峰和平峰时段的车速基本相等。Applying roadside laser traffic survey facilities,the speeds at 12 cross-sections of backward section of a signalized intersection are investigated,and the speeds at 12 cross-sections of 5 lanes are obtained. By means of regression analysis,11 kinds of regression curves are applied to analyze the relationship between speed and distance to upstream signalized intersection,and the regression equations of speed of the lanes in peak and off peak periods are established. Then,the relationships between the average speed of the same cross-section of all the lanes and the distance in peak and off peak period are analysed,and the corresponding regression models are obtained too. The regression analysis result reveals that（ 1） there is a good correlation between speed and distance except for the first lane;（ 2） to the same cross-section of all the lanes,the average speed has a strong correlation with the distance. The research result indicates that（ 1） in peak and off peak periods,speed tends to disperse all at about 700 m to upstream signalized intersection;（ 2） the speed in off peak period is generally higher than that in peak period,the speed in off peak and peak periods is almost equal after 700 m.

关 键 词：交通工程 车速 回归分析 离散特性 信号交叉口下游 

分 类 号：U491.112[交通运输工程—交通运输规划与管理]