同方向相邻机动车道交通流空间分布特性对比分析

Traffic Comparative Analysis of the Spatial Distribution Characteristics in the Same Direction Adjacent Vehicle Road

为了更好分析交通流空间分布变化特征,确定两相邻机动车道车流的变化规律,文章选取西安市科技四路路段作为研究对象,采用人工调查与视频采集组合方法,采集两相邻车道的流量、行驶速度、车道利用率等样本数据,对比分析同方向相邻机动车道交通流空间分布特征差异,并选取偏离程度作为衡量特征差异性指标,借助聚类分析手段,对空间分布特征差异性进行聚类统计。结果表明,随着总体断面流量不断增加,同方向相邻机动车道交通流空间分布存在三个明显的特征阶段,同时这三个阶段的特征在一定程度上也反映出交通状态的变化规律。通过分析西安市科技四路同方向相邻机动车道交通流空间分布特性,不仅能够较为准确的判断城市道路交通流的运行状态(畅通或者拥挤),同时分析结果也可用于完善交通流领域的知识架构和基础理论。

In order to better analyze the spatial distribution of traffic flow variation, variation determining two adjacent motor vehicle lanes of traffic, article four sections selected Xi’an Science and Technology as the research object, the use of artificial methods investigation and combination video capture, capture two adjacent lanes of traffic, speed, lane utilization sample data, comparative analysis of the same direction as the adjacent motor vehicle traffic flows spatial distribution of differences and select the degree of deviation as a measure of the difference between characteristics of indicators, by means of cluster analysis methods, the spatial distribution of the differences of clustering analysis. The results showed that with increasing total flow crosssection, with the direction of the adjacent motor vehicle traffic flows there are three distinct spatial distribution characteristics of stage, these three stages characterized by a certain extent, also reflects the changes of traffic conditions. By analyzing the spatial distribution characteristics of traffic flow in the same direction adjacent motor lanes of Xi’an Science and Technology Fourth Road, we can not only accurately judge the operation status of urban road traffic flow(smooth or congested), but also improve the knowledge structure and basic theory in the field of traffic flow.