论文部分内容阅读
围绕交通流量和车辆密度两方面,分别进行两次模拟交通事故占用不同车道,根据监控视频统计两次模拟事故的相关数据,采用最小二乘法拟合车道占用发生至解除占用期间,第一次模拟事故所处横断面实际通行能力变化的近似多项式,绘出图像,定性且定量的从交通流量、车流密度俩个方面进行分析。再用Matlab软件拟合第二次模拟事故所处横断面实际通行能力的变化与时间的函数表达,对函数的拟合程度进行F检验,以判断其可信度,同时绘出俩次实验交通流量变化函数的图像,从绝对差别和相对差别两方面,比较分析出占用车道不同对道路通行能力的影响差异,进而估算出车道被占用对城市道路通行能力的影响程度。
Two traffic accidents and two traffic accidents were occupied respectively in the traffic flow and the vehicle density. According to the monitoring video, statistics were made on the data of two simulated accidents and the least square method was used to fit the lanes occupancy until the occupancy was canceled. The first simulation The approximate polynomial of the change of actual traffic capacity of the cross section of the accident is plotted, and the images are qualitatively and quantitatively analyzed from two aspects of traffic flow and traffic flow density. Matlab software was used to fit the second cross-section of the actual simulated accident traffic capacity changes and the time of the expression, the function of the F-test to determine the degree of confidence, and draw two experimental traffic Traffic changes function of the image, from absolute difference and relative difference between two aspects, comparative analysis of different occupancy lanes on the road capacity differences, and then estimate the lane occupation of urban road capacity.