城市快速路路段车速分布特征及影响因素研究

Research on vehicle speed distribution characteristics of urban expressway section and influence factors

文章通过对城市快速路地点车速与路段车速的数据采集,在大量实验数据的基础上,运用统计学方法对城市快速路的车速分布特征及影响因素进行了分析研究,分别从分布类型、集中趋势、离散趋势3个方面对地点车速与路段车速试验数据进行了分布特征分析及相互关系对比,在此基础上进行了影响因素的研究。研究结果表明,车辆行驶时所处的车道位置以及交通流状态对车速分布特征有着不同程度的影响,在一定的条件下,地点车速与路段车速的分布特征趋于相同。研究成果可对城市快速路的规划、管理、设计、控制及评价提供数据支持和理论依据。

Based on a large number of experimental data of spot speed and region speed collected on the urban expressway,the distribution characteristics of the vehicle speed of urban expressway and their influence factors were studied by using the general statistical methods.The distribution characteristics of spot speed and region speed and their relationship were analyzed through distribution types,central tendency and dispersion degree of vehicle speed,respectively.And then the factors influencing the speed distribution characteristics were discussed.Results show that the lane position where the vehicle is running on and state of traffic flow have a varying degree of impact on the speed distribution characteristics,and the spot speed and region speed distribution characteristics tend to be the same in some conditions.The results can provide theoretical basis and data support for planning,managing,designing,controlling and evaluating urban expressways.