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

A technology of road section information and discrete models, applied in the arrangement of variable traffic instructions, traffic control systems of road vehicles, instruments, etc., can solve the problems of expressway traffic flow density, effective control of driving speed, etc., and achieve effective control of driving speed Effect

Inactive Publication Date: 2012-07-25
XIAN FEISIDA AUTOMATION ENG
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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 section 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

Method used

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

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Embodiment Construction

[0016] 1. Define the conditional controllability discriminant of road section as:

[0017]

[0018] in: is the sampling period, To designate road section labels, the total number of road sections allocated for the designated road, for the first segments in the average density of moments, for the first segments in the average speed of time, for in Enter from the entrance of the ramp at all times the flow of road segments, for in Time to flow out of the ramp exit the flow of road segments, for the first section length, V e is the equivalent velocity, , , is the free stream velocity, for the first There are information display boards indicating the influence of speed on equivalent speed on road sections. is the maximum possible density of a single lane,

[0019]

[0020] is the weight coefficient, , It reflects specific parameters and adjustable correction coefficients to make the whole model more in line with actual traff...

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Abstract

The invention provides a method for setting a road section information display board based on an improved discrete model, and is used for overcoming the problem that the traffic flow density and driving speed of the highway are difficult to control by the information of the existing information display board effectively. In the method, according to the a macro traffic flow discrete model with improved speed, a road section condition controllability discriminant is defined, the vehicle control scheme at the ramp exit and entry is regulated, the information display board instructs the vehicle driving speed to change the equivalent speed in the road section condition controllability discriminant, the density and speed obtained by the forecasting by the road section condition controllability discriminant under the condition of actual road section traffic state meet the required density and speed limiting conditions, and the information of the information display board displays the vehicle control scheme at the ramp exit and entry and the required vehicle running speed.

Description

technical field [0001] The invention relates to a method for setting a road traffic information display board, in particular to a method for setting a road section information display board 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 constructio...

Claims

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Application Information

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IPC IPC(8): G08G1/09G08G1/052G08G1/065
Inventor 史忠科
Owner XIAN FEISIDA AUTOMATION ENG
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