A variable speed limit control system and method under ice and snow weather on expressway

Abstract

The present invention proposes a variable speed limit control system for expressways under ice and snow weather, a variable speed limit control system for expressways under ice and snow weather, which is characterized in that it includes a road surface detection unit, a road surface state judgment unit, a speed limit control unit and information release unit; the road surface detection unit collects ice and snow state information on the road surface; the road surface state discrimination unit adopts fuzzy logic control to distinguish the road surface state; the speed limit control unit is used for speed limit value Generate, check and update; the information publishing unit is used to display the speed limit value in real time. The method of the invention can dynamically change the speed limit value of the expressway in real time according to the influence of ice and snow weather on the road, which is more flexible than the fixed speed limit. Applying the variable speed limit to the management of highways in ice and snow weather overcomes the shortcomings of the traditional fixed speed limit that cannot change the speed limit information in real time as road conditions change.

Description

technical field [0001] The invention relates to the technical field of traffic safety, in particular to a variable speed limit control system and method in ice and snow weather on expressways. Background technique [0002] With the rapid increase in the mileage of expressways and the number of motor vehicles in my country, the related issues in the field of road traffic safety have been paid more and more attention. Under normal weather conditions, there is a set of speed limit control system. And under the snowy weather condition, the situation is complicated, and the speed limit control system under the normal weather condition is not suitable for the situation of the snowy weather condition. Ice and snow weather will have a serious impact on the traffic efficiency of expressways. Expressways often adopt road closures or announcements of speed limits in ice and snow weather. Road closures will cause the corresponding road sections to lose their traffic functions, and ann...

AI Technical Summary

Problems solved by technology

In the research on the application of variable speed limit to expressway control in special weather, the speed limit control method under foggy and rainy conditions has been included, but the research on variable speed limit under ice and snow weather conditions is relatively lacking.

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