The invention provides an intersection motor vehicle flow multi-mode conflict risk identification method considering queue features, and belongs to the technical field of urban road traffic operation risk identification and state monitoring, and the method comprises the steps: obtaining the real-time track of a motor vehicle in an intersection, and generating a motor vehicle track band; rasterization is carried out on the intersection, and assignment and binarization are carried out on all grids in a polygonal area occupied by all motor vehicle track bands; motor vehicle queues are extracted and sorted through a connected region recognition algorithm, principal component analysis and abnormal value elimination; identifying rear-end collision, angle collision and scraping collision of the motor vehicles in the queue; dynamically outputting the traffic conflict risk condition in the motor vehicle flow in the intersection in the form of a thermodynamic diagram; on the basis of mining the running characteristics of the motor vehicles with the queue running characteristics in the motor vehicle flow, the mutual interference characteristics between the internal vehicles of the motor vehicle team and between the motor vehicle team and other external vehicles are considered, and the dynamic condition of the traffic conflict risk in the motor vehicle flow is fully identified.
本发明提供了一种考虑队列特征的交叉口机动车流多模式冲突风险识别方法,属于面向城市道路交通运行风险识别与状态监测的技术领域,包括获取交叉口内机动车的实时轨迹,生成机动车轨迹带;对交叉口栅格化,对所有机动车轨迹带所占用的多边形区域中所有栅格赋值、二值化;通过连通区域识别算法、主成分分析、异常值剔除提取机动车队列并排序;对队列内机动车分别进行追尾冲突、角度冲突和刮擦冲突的识别;以热力图形式动态输出交叉口内机动车流内交通冲突风险情况;在挖掘机动车流内具有队列行驶特征的机动车运行特征的基础上,考虑机动车队内部车辆间以及机动车队与外部其他车辆间的相互干扰特征,充分识别机动车流内交通冲突风险的动态情况。
Intersection motor vehicle flow multi-mode conflict risk identification method considering queue features
考虑队列特征的交叉口机动车流多模式冲突风险识别方法
2024-02-20
Patent
Elektronische Ressource
Chinesisch
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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