The invention discloses an expressway dynamic speed limit method based on multi-source data, and belongs to the technical field of expressway speed limit, and the method comprises the steps: obtaining accident data, constructing an accident risk degree prediction model, and generating an accident risk degree trend chart; acquiring real-time traffic flow data, constructing a traffic flow prediction model, and generating a traffic flow tendency chart; obtaining meteorological data, and generating a local meteorological state distribution diagram; performing space alignment and data fusion on the traffic flow tendency chart and the local meteorological state distribution diagram to generate a road section comprehensive risk index; performing time alignment on the accident risk degree trend chart and the comprehensive risk degree index of the road section to generate a real-time risk degree score of the current road section; smoothly adjusting the speed limit value by adopting a linear interpolation algorithm on the basis of the real-time risk degree score in combination with a preset speed limit adjustment rule; and comparing the current vehicle speed with the adjusted speed limit value, and early warning over-speed. According to the invention, accurate speed limit control based on multi-dimensional data is realized, and the road safety is effectively improved.

    本发明公开了一种基于多源数据的高速公路动态限速方法,属于高速公路限速技术领域,包括:获取事故数据,构建事故危险度预测模型,生成事故危险度趋势图;获取实时交通流量数据,构建交通流量预测模型,生成交通流量趋势图;获取气象数据,生成局部气象状态分布图;将交通流量趋势图与局部气象状态分布图进行空间对齐和数据融合,生成路段综合危险度指数;将事故危险度趋势图与路段综合危险度指数进行时间对齐,生成当前路段实时危险度评分;基于实时危险度评分,结合预设的限速调整规则,采用线性插值算法平滑调整限速值;对比当前车辆速度与调整后的限速值,对超速预警。本发明实现了基于多维数据的精准限速管控,有效提高了道路安全性。


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    Title :

    Highway dynamic speed limiting method based on multi-source data


    Additional title:

    一种基于多源数据的高速公路动态限速方法


    Contributors:
    YAO XINPENG (author) / WANG ZIJIAN (author) / LI XIAOSONG (author) / YUAN HAORAN (author) / LIU MENGFEI (author) / ZHANG HAN (author) / ZHAO YUJUAN (author) / ZHAO HUANQI (author) / HU WEICHAO (author) / FU TING (author) ... [more]

    Publication date :

    2025-06-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G06N COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS , Rechnersysteme, basierend auf spezifischen Rechenmodellen / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung



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