车道被占用对城市道路通行能力的影响  

Effect on City Road's Traffic Capacity when Lane Occupied

作　　者：张安玲[1] 仝耀华[2] 

机构地区：[1]长治学院数学系,山西长治046011 [2]山西大同大学数计学院,山西大同037009

出　　处：《太原师范学院学报（自然科学版）》2015年第2期81-84,共4页Journal of Taiyuan Normal University:Natural Science Edition

基　　金：山西省高等学校科技项目(2013158)

摘　　要：通过观察视频1整理分析数据,得出每个信号周期事故点的实际通行能力与到达事故点上游的车辆数,进而得出每个信号周期事故点排队车辆数.根据排队车辆数的变化及变化率分析了不同信号周期内实际通行能力的变化过程.从图形和数据角度分别表明视频1中交通事故开始到第13个周期内总的车辆排队数大于视频2,并分析了造成该差异的原因.运用最小二乘拟合和变上限积分方法建立了车道被占用对城市道路通行能力的影响的数学模型,从而得到了问题(3)的函数关系.Analyzing the data by watching video 1,it is concluded that the numbers of the actual capacity of each signal cycle at the accident point and vehicles arriving at the accident point upstream.Then,the numbers of queuing vehicles at the accident point of each signal cycle are obtained.The changing processes of actual capacity are obtained according to the change and the rate of change of the numbers of queuing vehicles.Graphic and data show that vehicle queue number of video 1is greater than video 2from the traffic accident happened to the 13 th cycle.The causes of the differences are analyzed.The mathematical model of lane occupied effects on urban road capacity is established by using the least squares fitting and variable upper limit of integral.At the same time,a function of the problem（3）is obtained.

关 键 词：道路通行能力 最小二乘拟合 变上限积分 

分 类 号：U491.3[交通运输工程—交通运输规划与管理]