Variable speed limit control system and method for mixed heterogeneous traffic flow on highways in rainy days

By setting up control modules and data acquisition systems on the highway, traffic risks in rainy weather and adjusting vehicle speed limits in real time, the safety issues of CAVs and artificial driving vehicles are solved, and traffic safety in rainy weather is improved. Passage efficiency.

CN115601969BActive Publication Date: 2025-01-03SHANDONG HI SPEED GRP CO LTD +1
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Patent Information

Application Number
CN202211261746.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-10-14
Publication Date
2025-01-03
Estimated Expiration
2042-10-14

AI Technical Summary

Technical Problem

In rainy weather, when CAVs and artificially driven vehicles are mixed on smart highways, the existing speed management control methods cannot effectively consider the impact of sight lines and vehicle differences, resulting in traffic flow conflicts and increased safety risks, and existing speed limit control measures Not enough to ensure traffic efficiency and road safety.

Method used

By setting up control modules, data acquisition modules and intelligent connected vehicles on the highway, weather and traffic data are collected, real-time dynamic operation risk assessment module for hybrid heterogeneous traffic is used to determine the risk status, and speed limiting strategies are distinguished based on rainfall level and driving style. Adjust the speed limit values ​​of artificially driven vehicles and intelligent connected vehicles in real time, and transmit speed limit information through roadside variable speed limit signs and communication transmission equipment to ensure the smooth change of vehicle speed.

Benefits of technology

It effectively reduces the impact of rainfall on traffic safety, reduces the risk of accidents, improves the accuracy and safety of vehicle speed limits, and ensures the safe driving and driving efficiency of different types of vehicles under complex traffic conditions.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention discloses a variable speed limit control system and method for mixed heterogeneous traffic flows on highways in rainy days, and relates to the field of highway management and control technology. The system comprises: a control module, a data acquisition module and an intelligent network-connected vehicle. Through the data acquisition of various devices in the data acquisition module, the current weather conditions and traffic conditions can be clearly known, and the prediction of the operating status risk can be achieved from multiple perspectives, so as to determine whether to perform speed control. In the control process, the relationship between the rainfall conditions and the vehicle parameters is established, the accuracy of the vehicle speed limit value is improved, and the speed of the vehicle can be effectively controlled in rainy weather. The present invention is applied to mixed heterogeneous traffic conditions of intelligent network-connected vehicles and manually driven vehicles, and can provide different speed limit information channels for manually driven vehicles and intelligent network-connected vehicles, respectively, effectively ensuring the safe driving and driving efficiency of different types of vehicles under complex traffic conditions.
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