The invention provides an intersection traffic conflict index calculation method considering a vehicle contour, which is used for calculating a traffic conflict index based on a high-frequency high-precision track and considering the vehicle contour, and comprises four steps of conflict pre-screening, vehicle contour position calculation, conflict identification and traffic conflict index calculation. The method comprises the following steps: 1, pre-screening conflicts, and judging the conflict possibility and conflict type of a vehicle pair at an intersection; 2, calculating a vehicle contour position, and determining coordinates of four vertexes of a vehicle rectangle at each moment; thirdly, conflict identification is conducted, and the collision risk of the two vehicles is judged; and 4, traffic conflict index calculation: giving out conflict index calculation methods such as intrusion time, conflict arrival time, conflict time difference and the like. According to the invention, by considering the vehicle contour, the spatial position and the motion attitude of the vehicle can be described more accurately, and the interaction relationship between the vehicles is determined, so that the traffic conflict index is calculated accurately.
本发明提供一种考虑车辆轮廓的交叉口交通冲突指标计算方法,基于高频高精度轨迹并考虑车辆轮廓进行交通冲突指标的计算,方法包括冲突预筛选、车辆轮廓位置计算、冲突识别和交通冲突指标计算四个步骤。第一步冲突预筛选,判断车辆对在交叉口冲突的可能性和冲突类型;第二步车辆轮廓位置计算,确定每时每刻车辆矩形的四个顶点坐标;第三步冲突识别,判断两辆车相碰风险;第四步交通冲突指标计算,给出侵入时间、到冲突时间和冲突时间差等冲突指标计算方法。本发明通过对车辆轮廓的考虑,可更准确地描述车辆的空间位置和运动姿态,确定车辆间交互关系,从而准确计算交通冲突指标。
Intersection traffic conflict index calculation method considering vehicle contour
一种考虑车辆轮廓的交叉口交通冲突指标计算方法
2022-12-30
Patent
Elektronische Ressource
Chinesisch
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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