Safety early warning control method, device and system for downhill road section

The invention provides a safety early warning control method, device and system for a downhill road section, and relates to the technical field of traffic management and control, and the method comprises the steps: determining the average number of historical accidents in unit time and a function relation between the number of historical accidents and time based on the historical traffic data of the downhill road section; determining an early warning time interval in which safety early warning needs to be carried out based on the average number of historical accidents and a function relationship between the number of historical accidents and time; an early warning device arranged on the downhill road section is controlled to give out safety early warning within the early warning time interval; wherein the setting position of the early warning device is determined by the relation between the historical accident number and the downhill length in the historical traffic data. Safety early warning can be carried o