Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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

A technology for expressway and weather information, applied in traffic control systems, traffic control systems for road vehicles, instruments, etc.

Active Publication Date: 2014-04-09
SOUTHEAST UNIV
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • 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

Examples

Experimental program
Comparison scheme
Effect test

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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/0967
Inventor 刘攀李志斌王炜万晶晶
Owner SOUTHEAST UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com