基于速度感知差异性的交通拥堵评价分析

Evaluation and Analysis of Traffic Congestion Based on Velocity Perception Difference

出行者对速度的感知差异性影响了交通拥堵评价分析.基于客观实际采集的视频数据及调查者对视频数据的主观感知速度,通过核密度分布方法得到感知差异的基本分布情况,通过t检验以及秩和检验方法证明不同身份(性别、年龄、驾龄)出行者对速度存在明显的感知差异性;通过融合主观数据(感知加权速度)和客观数据(速度、占有率)的动态聚类分析方法,给出新的交通拥堵阈值划分标准,新标准更符合出行者感知情况.

The perceived difference of the velocity affects the evaluation of traffic congestion.Based on the objective data collected by the video data and the subjective data surveyed by the perception of video,the basic distribution of perception difference is obtained by the kernel density distribution method.Through the t test and rank sum test method,significant differences in perception of velocity are proven to exist in the different identity（different gender,age,driving age）of the travelers.By the dynamic clustering analysis method based on the fusion of subjective data（perceptual weighting velocity）and objective data（velocity,occupancy）,a new traffic congestion threshold classification standard is given.The new standard is more in line with the traveler＇s perception.The research results provide a reference for the travel information release.