Traffic signal coordination control method of arterial street under super saturation traffic state

Abstract

The invention discloses a traffic signal coordination control method of an arterial street under a super saturation traffic state. The traffic signal coordination control method of the arterial street under the super saturation traffic state includes steps: confirming a key intersection on the arterial street, and selecting straight running phase positions of all intersections on the arterial street, which provide traffic rights for straight running vehicle flows along the direction of the arterial street, as coordination phase positions; using a green light start moment of the coordination phase position of the key intersection as a benchmark, and sequentially confirming green light start moments of the coordination phase positions of the other intersections when the other intersections coordinate along the direction of the arterial street by using green time ratios of the coordination phase positions of all the intersections on the arterial street and phase difference between each two adjacent intersections. The traffic signal coordination control method of the arterial street under the super saturation traffic state achieves orderly running of the vehicle flows on the arterial street under the super saturation traffic state by building a bidirectional red wave interception coordination band, not only improves running safety of vehicles on the arterial street, but also simultaneously can effectively prevent and evade back overflowing of the arterial street vehicle flows, caused among the intersections along the arterial street under the super saturation traffic state, and can effectively prevent traffic jams possibly caused by the back overflowing from spreading towards the adjacent intersections or adjacent arterial streets.

Description

technical field [0001] The invention relates to the field of urban intelligent traffic control, and more specifically relates to a traffic signal coordination control method for urban arterial roads in an oversaturated traffic state. Background technique [0002] With the sustained and rapid development of the national economy, the urbanization process has been further accelerated, and thanks to the country's strong support for the development of the automobile industry in recent years, the number of automobiles in large and medium-sized cities in my country has shown a blowout increase, while the traffic capacity of urban road networks is limited. , resulting in increasing traffic congestion. Parts of the arterial roads in the central urban areas of some large and medium-sized cities are operating under the condition of oversaturated traffic all year round, especially during the morning and evening rush hours and on the eve of holidays, two-way oversaturated congestion on ur...

AI Technical Summary

Problems solved by technology

Although this method includes regional coordination under different traffic load states, its coordination is based on the prediction of real-time traffic flow in the region, and the prediction accuracy is limited and the implementation process is more complicated in the oversaturated traffic state, so it The coordination effect is limited when coordinating urban arterial roads under oversaturated traffic conditions

[0005] To sum up, based on the current actual traffic conditions in our country, reviewing the many control methods and technologies proposed and invented in the field of traffic control at home and abroad, it is not difficult to find that although there are both for single intersections and for arterial lines and areas, both There are also signal control technologies and methods for saturated traffic conditions that are suitable for conventional traffic conditions, but there are almost no practical invention patents specifically for arterial coordinated control technology in oversaturated traffic conditions, and further work is still to be done by researchers and engineers research and development

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