Unbalance intersection signal phase optimal design method based on queuing theory

A signal phase and optimized design technology, applied in the direction of traffic signal control, can solve problems such as urban intersection imbalance, and achieve the effects of strong applicability, wide practical range, and high flexibility

Active Publication Date: 2019-07-09
TRAFFIC MANAGEMENT RES INST OF THE MIN OF PUBLIC SECURITY
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Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art, provide a kind of unbalanced intersection signal phase optimization design method based on queuing theory, through the optimal design of signal phase, make the intersection signal release phase tend to be optimal, to solve The Problem of Unbalanced Urban Intersections

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  • Unbalance intersection signal phase optimal design method based on queuing theory
  • Unbalance intersection signal phase optimal design method based on queuing theory
  • Unbalance intersection signal phase optimal design method based on queuing theory

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Embodiment Construction

[0059] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0060] The present invention takes a typical four-way intersection as an example. The typical four-way intersection is a level intersection where two roads intersect, and includes four entrance directions, wherein the opposite entrance directions are called a direction group; a direction group The phase clearance sequence is straight-going symmetrical clearance and left-turning symmetrical clearance. figure 1The four clearance phases for the two directional groups at the intersection are shown, figure 1 The phase setting in is the usual setting method, which can be further improved;

[0061] Collect the traffic flow data at the intersection, including the arrival rate λ of the two entrance lanes in the direction group, and the vehicle service rate μ. The calculation method is:

[0062]

[0063] Among them: t is a certain period of monitoring, you can choos...

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Abstract

The invention provides an unbalance intersection signal phase optimal design method based on a queuing theory. Related traffic data is collected through a traffic flow detector; based on the collectedtraffic data, each entrance lane of the unbalance intersection is used as the multi-path queuing multi-channel service system by adopting a M/M/1 model in the queuing theory, the average queuing length after the parking line of the entrance lane of the intersection is computed, based on the average queuing length of each entrance lane, the intersection signal phase optimization is performed. Through the method provided by the invention, the entrance lane unbalance problem at the intersection can be effectively solved, and the passing efficiency of the intersection is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of urban road traffic signal control, in particular to an unbalanced intersection signal phase optimization design method based on queuing theory. Background technique [0002] At present, single-point intersection control has become the main form of road traffic signal control in most cities, and single-point intersection signal control is the basis for cities to realize arterial coordination and regional coordination control. However, there is often an unbalanced intersection in the current urban roads, that is, the queue of traffic flow in a certain flow direction of the entrance road is particularly long, and the traffic flow often needs to queue twice or even multiple times to pass the intersection; while the flow direction of the opposite entrance road has a queue. The phenomenon of short and empty green lights is often caused by the unreasonable design of the intersection signal phase. In order to sol...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/08
CPCG08G1/08
Inventor 徐新东树爱兵王运霞徐棱刘成生蔡玉宝张宾
Owner TRAFFIC MANAGEMENT RES INST OF THE MIN OF PUBLIC SECURITY
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