Intelligent rail transit main branch intersection traffic signal control method

A traffic signal and control method technology, which is applied in the traffic control system of road vehicles, traffic control system, traffic signal control, etc., can solve the problem of less research on intelligent rail signal control, and achieve the purpose of avoiding idle waste of special lanes and evaluation indicators The effect of improving and improving efficiency

Active Publication Date: 2021-02-12
WUHAN INSTITUTE OF TECHNOLOGY
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Problems solved by technology

[0003] Many scholars have begun to study the operation of the smart rail...

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  • Intelligent rail transit main branch intersection traffic signal control method
  • Intelligent rail transit main branch intersection traffic signal control method
  • Intelligent rail transit main branch intersection traffic signal control method

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Embodiment Construction

[0048] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0049] Fuzzy control is a kind of artificial intelligence algorithm, which is characterized by simulating human thinking, and does not quantify the expression with specific values, but describes physical phenomena in fuzzy human languages ​​such as many, many, and medium. The present invention adopts fuzzy logic to carry out signal control on the trunk road-branch intersection, and considers the change of traffic flow of the trunk road and the branch road and the ratio of the total traffic flow of the intersection to the saturated flow, and performs dynamic timing for the trunk road and the branch road intersection Control; at the same time, set the borrowing signal of the special lane of the intelligent rail, and allow other vehicles to drive by the lane when there is no intelligent rail passing, so as to avoid idling and wasting the ...

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Abstract

The invention provides an intelligent rail transit main branch intersection traffic signal control method; a branch and main road flow ratio and an intersection total flow and saturation flow ratio are taken as input, an initial signal period is calculated through a fuzzy controller, and calculation is carried out through a Webster timing method to obtain a complete signal timing scheme; by arranging a special lane-borrowing indicator lamp, when an intelligent rail runs, inductive adjustment is carried out on intersection signal timing; and when the intelligent rail does not run, other motor vehicles are allowed to run by borrowing a lane. Simulation test results show that compared with fixed timing and pure fuzzy control, the method better adapts to signal control when the intelligent rail passes through the intersection of a trunk road and a branch road. According to the method, evaluation indexes such as the vehicle queuing length, the average delay and the parking frequency are improved, the carrying capacity of urban public transport and the control efficiency of the mixed flow of the vehicle with the intelligent rail are improved, and a research basis is provided for automatic driving and manual driving mixed traffic flow to pass through the intersection of the main road and the branch road.

Description

technical field [0001] The invention belongs to the technical field of traffic signal timing, and in particular relates to a traffic signal control method at an intersection of a main branch road of a smart rail. Background technique [0002] With the vigorous development of autonomous driving technology, more and more technologies related to autonomous driving are applied in practice. Autonomous rail Rapid Transit (ART) is also a recently emerging self-driving vehicle. When more and more intelligent rails are put into operation, the efficiency of intersection signal control for intelligent rail traffic is becoming more and more important. [0003] Many scholars have begun to study the operation of Smart Rail, but there are relatively few studies on the signal control of Smart Rail. Especially when the intelligent rail trains enter the city in an all-round way, after the intelligent rail special lanes are laid out and put into operation, the signal timing will be one of the...

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Application Information

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IPC IPC(8): G08G1/01G08G1/042G08G1/08G08G1/095G08G1/16
CPCG08G1/0125G08G1/042G08G1/08G08G1/095G08G1/167
Inventor 丁乃侃逯兆友曾子祺卢林盛田壮
Owner WUHAN INSTITUTE OF TECHNOLOGY
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