基于非对称理论的微观驾驶员行为特征分析

Analysis of Microscopic Drivers’Behavior Characteristics Based on Asymmetric Model

通过无人机航拍视频提取精确的轨迹数据进行微观分析,利用非对称理论来捕捉驾驶员在整个交通振荡过程中的换道行为。一方面,通过分析单个驾驶员在振荡过程中的驾驶行为,发现驾驶员的驾驶行为变化是异质的,但总体上是一致的:在经历振荡和换道后,驾驶员倾向于保持更具激进的驾驶特性。另一方面,统计分析表明我国驾驶员的一些典型特征,如道路上驾驶员类别的两极分化比较显著,激进驾驶员比例较高。文中发现的非对称驾驶行为转变有助于解释交通不稳定性、可能由驾驶行为引起的交通现象。

The accurate trajectory data is extracted from UAV aerial video for microscopic analysis,and the asymmetric theory is used to capture the driver′s lane changing behavior in the whole process of traffic oscillation.On the one hand,by analyzing the driving behavior of a single driver in the process of oscillation,it is found that the driving behavior changes are heterogeneous,but generally consistent:after the oscillation and lane change,drivers tend to maintain more aggressive driving characteristics.On the other hand,the statistical analysis shows that some typical characteristics of Chinese drivers,such as the polarization of road drivers,the proportion of aggressive drivers is higher.The asymmetric driving behavior transition found in this paper is helpful to explain the traffic instability and the traffic phenomenon that may be caused by driving behavior.