Method for setting road information display board based on improved discrete model

Abstract

The invention provides a method for setting a road information display board based on an improved discrete model in order to solve the problem that effective control for the traffic flow density and the running speed of a highway is difficultly realized by the aid of information of an existing information display board. Road section condition observability discriminant is defined according to a macroscopic traffic flow discrete model at an improved speed, the information display board indicates the running speed of vehicles and changes an equivalent speed in the road section condition observability discriminant by adjusting the control scheme of the vehicles at a ramp exit and a ramp entrance, the density and the speed predicted by the road section condition observability discriminant under the traffic condition of a practical road section meet required density and speed limiting conditions, and the information display board displays the control scheme of the vehicles at the ramp exit and the ramp entrance and the required running speed of the vehicles by the aid of information.

Description

technical field [0001] The invention relates to a method for setting road traffic information display boards, in particular to a method for setting road information display boards based on an improved discrete model. Background technique [0002] Transportation is extremely important to the development of the national economy and has always been the key construction content of the country. In recent years, my country's highways, railways, water transport, urban transportation and civil aviation have all developed by leaps and bounds, and a transportation network framework consisting of five modes of transportation, railways, highways, water transport, air transport and pipelines, has initially formed. Many high-grade and expressways have been laid, initially forming a road network radiating across the country composed of national highways, high-grade highways, and local highways. At the same time, urban road construction has also developed greatly. The construction of urban...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problem that the existing information display board information is difficult to effectively control the traffic flow density and driving speed of the expressway, the present invention provides a method for setting the road information display board based on the improved discrete model. The macro-traffic flow discrete model defines the controllability discriminant of road conditions, adjusts the ramp exit and entrance vehicle control schemes, and the information display board indicates the vehicle speed to change the sum of the equivalent speed in the controllability discriminant of road conditions, so that the actual road traffic Under the situation, the density and speed predicted by the controllability discriminant of road section conditions meet the required density and speed limit conditions, and the information display board information shows the ramp exit and entrance vehicle control scheme and the required vehicle speed

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