The invention belongs to the technical field of traffic safety, particularly relates to an expressway traffic safety risk evaluation method considering risk superposition, and aims to evaluate the safety risk degree of an expressway under the superposition action of multi-source factors such as road characteristics, traffic operation characteristics and meteorological characteristics. The invention designs an expressway traffic safety risk evaluation model based on a generative adversarial network, a gradient boosting decision tree and a cumulative local effect graph. According to the method, accident samples and non-accident samples containing risk features can be extracted from actual accident point locations, the accident samples and the non-accident samples are adopted to construct and train a risk evaluation model, and an accumulated local effect graph is adopted to mine the interaction effect between the risk features and the influence of the interaction effect on an evaluation result. According to the method, more comprehensive traffic safety risk assessment is realized, decision support is provided for targeted improvement measures and early warning of related departments, and the method has wide applicability.
本发明属于交通安全技术领域,具体涉及一种考虑风险叠加的高速公路交通安全风险评价方法,旨在评估道路特征、交通运行特征与气象特征等多源因素叠加作用下高速公路的安全风险程度。本发明设计了一种基于生成对抗网络、梯度提升决策树与累计局部效应图的高速公路交通安全风险评价模型。本发明的方法可以从实际事故点位中提取出包含风险特征的事故样本与非事故样本,采用事故样本与非事故样本构建并训练风险评价模型,并采用累计局部效应图挖掘风险特征间的交互效应,及这种交互效应对评价结果的影响。该方法实现了更全面的交通安全风险评估,为相关部门针对性改善措施和预警提供决策支撑,具有广泛的适用性。
Expressway traffic safety risk evaluation method considering risk superposition
一种考虑风险叠加的高速公路交通安全风险评价方法
05.07.2024
Patent
Elektronische Ressource
Chinesisch
IPC: | G06N COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS , Rechnersysteme, basierend auf spezifischen Rechenmodellen / G06Q Datenverarbeitungssysteme oder -verfahren, besonders angepasst an verwaltungstechnische, geschäftliche, finanzielle oder betriebswirtschaftliche Zwecke, sowie an geschäftsbezogene Überwachungs- oder Voraussagezwecke , DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung |
Europäisches Patentamt | 2023
|Sensitivity Analysis of Expressway Traffic Safety Risk
ASCE | 2012
|Europäisches Patentamt | 2024
|