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High speed variable speed limit control method based on adverse weather conditions

A technology for expressway and weather conditions, applied in the field of intelligent traffic management and control, which can solve problems such as different speed limit requirements

Active Publication Date: 2012-07-11
SOUTHEAST UNIV
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Problems solved by technology

[0005] The problem to be solved by the present invention is: the speed limit value of the existing expressway is fixed, but under different weather conditions, the speed limit requirements for passing vehicles are different, and it is necessary to establish a variable speed limit control method according to adverse weather conditions. Adjust the speed limit value of the expressway in real time in changing weather conditions to improve driving safety

Method used

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  • High speed variable speed limit control method based on adverse weather conditions
  • High speed variable speed limit control method based on adverse weather conditions
  • High speed variable speed limit control method based on adverse weather conditions

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Embodiment Construction

[0019] The present invention proposes a variable speed limit control method for express roads based on adverse weather conditions, such as figure 1 , including the following steps:

[0020] 1) Install weather environment monitoring equipment on the expressway to collect weather information in the area where the road to be controlled is located, including visibility, rainfall, road surface status, wind force and direction information, and the detection accuracy is once every 5 minutes.

[0021] 2) Transmitting the detected parameters to the central computer. The computer automatically calculates the optimal speed limit value according to various meteorological parameters, such as figure 2 , calculate a speed limit value according to the road visibility, calculate a speed limit value according to the rainfall situation, calculate a speed limit value according to the icy state of the road surface, and calculate a speed limit value according to the wind force and direction.

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Abstract

The invention relates to a high speed variable speed limit control method based on adverse weather conditions. According to real-time change of weather conditions, speed limit values under various weather conditions are automatically adjusted, and speed limit information is issued to a driver by virtue of a variable message sign, thus traffic accident probability is reduced and road traffic safety is improved. In the high speed variable speed-limit control method provided by the invention, real-time weather characteristic parameters are acquired by utilizing meteorological environment testing equipment, speed limit value of a road is automatically adjusted according to various weather conditions, and the defect that the traditional speed limit value of the road is constant can be overcome. The high speed variable speed limit control method has practical engineering application value in the aspects of high speed road traffic management and control according to the adverse weather conditions.

Description

technical field [0001] The invention belongs to the technical field of traffic intelligent management and control, performs dynamic speed limit control on express roads according to real-time weather conditions, and is a variable speed limit control method on express roads based on 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. Existing studies have shown that higher driving speeds often lead to higher collision risk and accident severity, because drivers often do not have enough reaction time to take corresponding measures to avoid dangerous situations under high-speed driving conditions. For example, the vehicle in front suddenly brakes and accel...

Claims

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Application Information

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IPC IPC(8): G08G1/09
Inventor 刘攀李志斌徐铖铖王炜万晶晶
Owner SOUTHEAST UNIV
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