The invention discloses an expressway confluence area traffic conflict discrimination method based on vehicle driving track prediction. The method comprises the following steps: (1) establishing a two-dimensional coordinate system in a confluence area; (2) dividing priorities of vehicle trajectory data set processing sequences according to time; (3) classifying the driving track data sets of the vehicles in the confluence area at the initial moment of the same priority, and (4) based on the vehicle driving track data sets, predicting vehicle driving track points of each vehicle on each lane byadopting a Kalman filtering method; (5) performing linear fitting on the coordinate points, and drawing a vehicle trajectory based on a function expression; (6) carrying out conflict judgment on thetrack intersection points; according to the method, whether the vehicles in the expressway confluence area have traffic conflicts or not is innovatively judged from the perspective of vehicle trajectories, a mathematical model is established in combination with trajectory point space-time information for function fitting, and the reliability and feasibility of the method are ensured.
本发明公开了一种基于车辆行驶轨迹预测的高速公路合流区交通冲突判别方法,其步骤如下:(1)在合流区区域内建立一个二维坐标系;(2)根据时间划分车辆轨迹数据集处理顺序的优先级;(3)对处于同一优先级的初始时刻的合流区车辆的行驶轨迹数据集进行分类,(4)基于车辆行驶轨迹数据集,采用卡尔曼滤波法对每个车道上的每一个车辆进行车辆行驶轨迹点预测;(5)对上述坐标点进行线性拟合然后基于函数表达式绘制车辆轨迹线;(6)对上述轨迹交叉点进行冲突判断;该方法创新性地从车辆轨迹角度进行高速公路合流区车辆是否存在交通冲突的判别,并结合轨迹点时空信息建立数学模型进行函数拟合,确保了方法的可靠性和可行性。
Expressway confluence area traffic conflict discrimination method based on vehicle driving track prediction
一种基于车辆行驶轨迹预测的高速公路合流区交通冲突判别方法
2020-07-14
Patent
Elektronische Ressource
Chinesisch
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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