The invention discloses a real-time control method based on accident precursor characteristics of an expressway confluence influence area. The real-time control method comprises the following steps: determining a confluence nose end and a confluence influence area range; collecting real-time traffic flow data of the highway confluence influence area; taking 15 minutes as an interval set, establishing an accident risk model, and predicting an accident occurrence probability; determining traffic accident types easily induced by accident precursor characteristics of the confluence influence area according to the model; according to the real-time traffic flow parameters, judging whether an accident precursor feature appears in the range of the confluence influence area, and if so, adopting two real-time traffic control methods of lane-divided speed limitation or continuous reduction of the maximum speed limitation. According to the invention, the accident risk model can be established according to the traffic flow data obtained by the front-end detector, whether the accident precursor feature appears is judged, and when the accident precursor feature appears, the real-time traffic control strategy is automatically triggered, so that the traffic safety in the confluence influence area is improved.
本发明公开了一种基于高速公路合流影响区事故前兆特征的实时控制方法,包括如下步骤:确定合流鼻端和合流影响区范围;采集高速公路合流影响区实时交通流数据;以15min为间隔集计,并建立事故风险模型,预测事故发生概率;根据模型确定合流影响区事故前兆特征其易诱发的交通事故类型;根据实时交通流参数判断合流影响区范围内是否出现事故前兆特征,若出现,则采取分车道限速或连续降低最高限速两类实时交通控制方法。本发明能够根据前端检测器获取交通流数据建立事故风险模型,并判断是否出现事故前兆特征,当出现事故前兆特征时自动触发实时交通控制策略,提高合流影响区内的交通安全。
Real-time control method based on accident precursor characteristics of highway confluence influence area
基于高速公路合流影响区事故前兆特征的实时控制方法
25.03.2022
Patent
Elektronische Ressource
Chinesisch
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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