Traffic control subsection optimization and self-adaptive adjusting method

Abstract

The invention discloses a traffic control subsection optimization and self-adaptive adjusting method. Traffic control subsection division is carried out based on static road levels and dynamic real-time traffic flows, traffic control subsections requiring signal lamp linkage management and control and manual intervention are determined according to a saturation index, and the traffic control subsections are automatically updated. According to the invention, static and dynamic division is carried out on the traffic control subsections based on the road levels and the real-time traffic flows, so that the subsection division efficiency is effectively improved; the different types of traffic control subsections are determined according to the saturation, so that reasonable signal lamp linkage management and control schemes and manual intervention schemes are facilitated; in addition, according to the changes of the real-time traffic flows, the plurality of changed traffic control subsections are re-divided, so that redundant calculation generated by re-division of a whole road network is avoided.

Description

technical field [0001] The invention relates to an urban traffic control sub-area division method, in particular to a traffic control sub-area division and area self-adaptive adjustment method combined with road grades and real-time traffic flow. Background technique [0002] The division of sub-regions is the prerequisite for regional coordinated signal control and the determination of reasonable traffic control measures and scope. It divides the huge and complex road network into several evaluation sub-areas according to certain principles and methods, so as to obtain the relationship between traffic supply and traffic demand in the sub-areas, and then determine the signal coordination control strategy or traffic control measures of different traffic control areas Wait. [0003] At present, there are mainly two methods of subdivision division, static and dynamic division. Since static division cannot be adjusted reasonably in time according to real-time traffic condition...

AI Technical Summary

Problems solved by technology

However, few studies have included road grades in the consideration of traffic control area division.

In addition, the division of signal control sub-area is a dynamic problem. The change of traffic flow in the urban road network has a strong time period characteristic, which will make the original signal control sub-area unable to support coordinated signal control well. When the signal control sub-area When the division principle is no longer met, it is necessary to dynamically adjust the control sub-areas according to the real-time changes in traffic flow

The existing dynamic adjustment of signal lights mostly manually determines a certain time interval and recalculates the division uniformly. However, because some traffic control areas are not strongly affected by time interference, division is not required, resulting in redundant calculations.

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