Self-adaptive variable speed limit and information cooperative control system for expressway in adverse weather

Abstract

The invention relates to a highway adaptive variable speed limit and information cooperative control system in adverse weather and belongs to the technical field of intelligent traffic management and control. The system comprises a variable message sign VMS, a variable speed limit signboard VLS, a traffic meteorological monitoring station RWS, a traffic flow detection device TRA and a cooperative controller; wherein the variable message sign VMS is used for issuing the type, position and management and control measures of the current severe weather; the variable speed limit signboard VLS is used for issuing a real-time speed limit value of the current speed limit area; the traffic flow detection equipment TRA is used for collecting the traffic flow information; the traffic meteorological monitoring station RWS is used for acquiring meteorological parameters of a road section in real time; according to the method, road conditions, meteorological environment differences and the like of continuous speed limit areas of mountainous highways are combined, cooperative control technologies such as the variable speed limit signboards and the variable information boards are adopted, traffic safety and efficiency of the highways in severe weather are improved, and the method is easy to apply and popularize.

Description

technical field [0001] The invention belongs to the technical field of intelligent traffic management and control, and in particular relates to an adaptive variable speed limit and information collaborative control system for expressways in adverse weather, which can realize automatic real-time speed control and traffic control of expressways according to changes in traffic weather. Background technique [0002] The highway in the mountainous area is wired in strips, passing through many areas along the line. However, mountainous highways have complex terrain and geological conditions, large altitude differences, and obvious vertical climate distribution along the line. When severe weather occurs, it has localized and sporadic characteristics. When the vehicle is running at the normal speed limit, if it encounters severe weather such as local or sudden fog, heavy rain, and icy roads, it is too late to take corresponding measures such as braking, and traffic accidents are ver...

AI Technical Summary

Problems solved by technology

[0004] In addition, when encountering extreme bad weather or traffic events that require traffic control, the existing variable speed limit technology has not carried out detailed countermeasures

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