Calculation method for the traffic capacity of highway basic sections without roadside interference
In order to calculate the traffic capacity of highway basic sections,the single-lane traffic flow data of straight lanes at highway signal intersections in Jinan,Linyi,Rizhao,Dezhou and other regions are collected,as the traffic flow data of the highway basic sections without roadside interference,and the number of lanes,lane width,shoulder width,central separation zone width,and traffic composition are selected as the factors affecting the traffic capacity.The Pearson coefficient analysis method is used to screen the key factors affecting the traffic capacity,and the functional relationship between the single factor and the single-lane traffic capacity is established by regression analysis,and the correction coefficient of the single-lane traffic capacity under different influencing factors is calculated.Two-way analysis of variance is used to analyze the interaction relationship of different influencing factors,and a multiple regression model of traffic capacity of basic highway sections with multiple influencing factors and influencing factor interaction terms is constructed.The results show that the number of lanes,lane width and traffic composition have a significant correlation with the single-lane traffic capacity,which are the key influencing factors,and are ranked as traffic composition,number of lanes and lane width in order of importance from large to small.The three key influencing factors are not independent of each other,and there is a certain interaction,and there are interactions between the number of lanes and traffic composition,and the width of lanes and traffic composition.The calculation accuracy of the constructed multiple regression model is 96.30％,which can calculate the traffic capacity of the basic section of the highway well.
万方数据
维普
