城市干道交通流统计间隔的选择研究

Study on Statistical Intervals Chosen for Traffic Flowson Urban Roadways

文中以城市干道交通流为研究对象,应用北京市学院路和劲松中街的相关数据,在分析交叉口信号对城市干道交通流影响的基础上得到:统计间隔的确定应小于上、下游交叉口的信号周期;通过比较以20s、1min、2min、3min、4min和5min为统计间隔而得到的曲线模型,得出以2min、3min、4min和5min为统计间隔较以20s和1min更为合理,且以2min为统计间隔得到的城市干道曲线模型与实际更为相符,建议以2min为统计间隔进行城市干道交通流数据的处理。

By using correlation dates of Xueyuan Road and Jingsong Middle Road in Beijing, traffic flows on urban roadways are studied in the paper, the results that based on the analysis of influences to traffic flows on urban roadways which caused by crossroads signal show that the statistical intervals should less than signal cycle of upriver and downriver crossroads. Curvilinear models that choose 20 second,1 minute,2minute,3minute,4 minute and 5 minute as statistical intervals are given in the paper, the models which choosing 2 minute,3 minute,4 minute and 5 minute as statistical intervals are more reasonable than others, otherwise, the model that choose 2 minute as statistical interval is more accordant with urban roadway fact, so choosing 2 minute as statistical interval of urban roadway is the best choice.