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A traffic control sub-area division method in the state of urban traffic flow saturation

A technology of urban traffic and traffic control, which is applied in the traffic control system of road vehicles, traffic control system, traffic flow detection, etc., and can solve the problems of not considering the oversaturation state identification of intersections and the effect of division in time, so as to improve the signal Control efficiency, excellent effect

Active Publication Date: 2018-05-29
ZHEJIANG UNIV OF TECH
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Problems solved by technology

However, the above studies did not consider the identification of the oversaturated state of the intersection in time, and the congestion is diffused from point to line and then to surface, so it will affect the effect of division

Method used

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  • A traffic control sub-area division method in the state of urban traffic flow saturation
  • A traffic control sub-area division method in the state of urban traffic flow saturation
  • A traffic control sub-area division method in the state of urban traffic flow saturation

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Embodiment

[0029] Example: such as figure 1 As shown, an urban road network with 12 intersections, each intersection and road section has real-time detection equipment to detect the required traffic volume: the flow direction of each flow direction at the intersection, the length of the queue of vehicles, the green signal ratio of the intersection signal . There are two main flow directions (there may be only one flow direction) between any two intersections, which are recorded as a road segment, and each road segment has a real-time congestion degree. Assume that many of the 12 intersections have reached an oversaturated traffic state. The specific judgment method is shown in 1) below. A intersection is one of them, and AB, BC, AD, DE, and EF represent the congestion degree of the road section The threshold is exceeded, and the congestion degree of other road sections in the road network does not exceed the threshold. In the following steps, it is assumed that the sub-area is divided ...

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Abstract

The invention relates to a traffic control subsegment division method in a city traffic flow oversaturation state, which is provided specific to the characteristics of traffic flow in large scale city road network oversaturation state, and realizes subsegment division on intersections of similar passage states in a road network based on a city traffic congestion formation mechanism. According to the constantly changing traffic flow in an oversaturation state, the method performs dynamic division, and provides reliable basic conditions for the realization of a signal control algorithm in an oversaturation state; according to the real time detection data of each intersection and section in the road network, the method can automatically identify intersection and section congestion states, and dynamically divide oversaturation subsegments according to the intersection and section congestion states. The method can effectively perform subsegment division on a city oversaturation road network, has the automatic and real-time dynamic oversaturation subsegment division effect which is better than traditional single oversaturation subsegment division, and provides an effective division method for the road network in a city oversaturation state.

Description

technical field [0001] The invention relates to the field of intelligent transportation, in particular to a method for dividing traffic control sub-areas under the state of urban traffic flow saturation. Background technique [0002] With the development of the urban economy, the number of motor vehicles is increasing rapidly, while the growth of urban roads is limited and slow, resulting in serious obstruction of normal traffic in the city, frequent traffic congestion, and a significant decline in vehicle transportation efficiency, which affects the quality of life of urban residents. Normal travel restricts economic development. Especially in big cities, oversaturated traffic jams have become the norm. Oversaturated traffic congestion, environmental pollution and energy shortages have become major issues affecting urban development and citizens' living standards. [0003] As an extremely important means of modern urban traffic management, the quality of urban road traffi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/01
CPCG08G1/0133
Inventor 沈国江吴佳浩杜建波
Owner ZHEJIANG UNIV OF TECH
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