Variable speed-limit control method of expressway based on real-time traffic flow and weather information

A technology for express roads and weather information, applied in traffic control systems, traffic control systems of road vehicles, instruments, etc., can solve problems such as fixed and incapable of speed limit adjustment

Active Publication Date: 2012-07-04
SOUTHEAST UNIV
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The problem to be solved by the present invention is: the traditional road speed limit value is a fixed value, which cannot be dynamically adjusted according to the real-time road traffic flow operation situation. Dynamic speed limit control method based on weather conditions, real-time adjustment of expressway speed limit value according to changing traffic flow and weather conditions, improving driving safety

Method used

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  • Variable speed-limit control method of expressway based on real-time traffic flow and weather information
  • Variable speed-limit control method of expressway based on real-time traffic flow and weather information
  • Variable speed-limit control method of expressway based on real-time traffic flow and weather information

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Embodiment Construction

[0023] The present invention proposes a variable speed limit control method for express roads based on real-time traffic flow and weather information, including the following steps:

[0024] 1) Set up traffic flow and weather information detection equipment on the expressway to collect traffic flow and weather information in the area where the road to be controlled is located. Traffic flow information includes speed, flow, occupancy rate, and weather information includes visibility, rainfall, road surface status, wind force For wind direction information, the detection accuracy is once every 5 minutes.

[0025] 2) Transmitting the detected parameters to the central computer. At the same time, the current time is judged, and the variable speed limit control system only plays a control role in the daytime (7:00AM-7:00PM) time period. If it is not within this time, the electronic information board will display "keep speed, drive safely".

[0026] 3) According to the real-time t...

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Abstract

The invention relates to a variable speed-limit control method of expressway based on real-time traffic flow and weather information, which can automatically regulate the speed limit values under various traffic flows and weather conditions according to real-time change of the traffic flows and the weather states, and send the speed limit message to a driver by a variable message board, so as to reduce traffic accident risk. The invention is featured by making use of a traffic flow detection device and a weather environment detection device to obtain real-time traffic flow and weather parameters, automatically regulating the speed limit according to various traffic flows and weather states to overcome the defect and shortcoming that the prior road speed limit can only be fixed and unchanged. Therefore, a dynamic speed limit method according to the real-time traffic flow and weather information has an actual engineering application value in the expressway traffic management and control aspect.

Description

technical field [0001] The invention belongs to the technical field of traffic intelligent management and control, performs dynamic speed limit control on expressways according to real-time traffic flow and weather conditions, and is a variable speed limit control method for expressways based on real-time traffic flow and weather conditions. Background technique [0002] Highway speed limit has always been a hot issue in traffic safety. According to the 2005 and 2006 "Annual Report on Traffic Accidents of the Ministry of Public Security of the People's Republic of China", about 10% of the accidents from 2005 to 2006 were related to vehicle speeding, ranking first among various accident causes. Previous studies have shown that higher driving speeds lead to higher collision risk and accident severity, because under high-speed driving conditions, drivers do not have enough reaction time to take corresponding measures to avoid dangerous situations, such as sudden braking and acc...

Claims

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Application Information

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IPC IPC(8): G08G1/0967
Inventor 杨敏孙刚王炜高柳依
Owner SOUTHEAST UNIV
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