Method for calculating green wave effective coordinated time

A technology for coordinating time and calculation methods, applied in the direction of traffic signal control, etc., can solve the problems of arterial coordination failure, difficult to obtain traffic data, unsatisfactory control effect, etc., and achieve the effect of improving traffic capacity

Inactive Publication Date: 2012-07-25
郭海锋
View PDF3 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing coordinated control methods for trunk lines cannot realize the above functions
Although the relatively mature urban road traffic state discrimination method can judge the road traffic state, the traffic data required in the method is st...

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
  • Method for calculating green wave effective coordinated time
  • Method for calculating green wave effective coordinated time
  • Method for calculating green wave effective coordinated time

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] In order to enable those skilled in the art to better understand the solution of the present invention, the specific implementation method of the technical solution will be further described in detail below.

[0036] combined with figure 2 Analysis, theoretically, the bandwidth of the system under the given traffic conditions can be calculated when the green wave coordinated control is carried out. At the bottleneck point, only part of the designed bandwidth is used to release the traffic coming from the upstream, and the other part is used to release the queuing vehicles in front of the stop line at the beginning of the green light, which leads to a discount in the actual traffic operation of the designed bandwidth, as shown in the attached image 3 shown.

[0037] attached by figure 2 , attached image 3 It can be seen that the design bandwidth is a theoretical value, which is suitable for low traffic conditions. In the case of high traffic and saturation, in th...

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 discloses a method for calculating green wave effective coordinated time. For monitoring the running state and control effect of a trunk line green wave coordination control system to determine the switching time points of different trunk line traffic signal control schemes, a definition and a calculation method of effective coordinated time are firstly given, the running state of a current green wave coordination control system is dynamically monitored, a bottleneck intersection in a green wave coordination system is determined by accumulating punishment score values, and the influence of effective coordinated time on the switching time points of the signal control schemes is discussed lastly. As shown by a simulation test result, the running state of the green wave coordination control system can be effectively monitored by adopting the effective coordinated time, the bottleneck intersection in the system is discovered accurately, and technical support can be provided for improving a trunk line traffic organism and perfecting a trunk line control scheme.

Description

technical field [0001] The invention relates to the field of green wave system control in traffic, in particular to a dynamic monitoring method for the running state of the green wave system. Background technique [0002] The so-called "green wave" refers to the fact that the traffic flow along a certain main route continuously receives green light release signals one after another, and passes through all intersections along the way unimpeded. The existing green wave coordinated control method selects the optimization target from different angles, and seeks the optimal bandwidth of the one-way or two-way green wave coordinated control system. Practical application shows that green wave coordinated control works better in low flow or unsaturated conditions, and the traffic flow can pass through several signalized intersections at a certain speed, but the effect is poor in high flow or congestion conditions, even in peak hours. There is a "deadlock" phenomenon in which vehicl...

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
IPC IPC(8): G08G1/07
Inventor 郭海锋
Owner 郭海锋
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap