Intersection signal timing parameter inferring method based on checkpoint detection data

Abstract

The invention provides an intersection signal timing parameter inferring method based on checkpoint detection data, and belongs to the technical field of traffic signal timing research. Inferred intersection signal timing parameters comprise phase sequence, cycle time and phase green light time. According to the method, on the basis of the checkpoint detection data, the phase sequence is inferred based on vehicle passing time sequence information according to the geometrical characteristics of an intersection, and the phase green light time is inferred by introducing phase weight and phase average time information; and the mutual complementation of information among each entrance lane, a non-single direction and each release direction of the intersection is considered, actual demands are fully considered, a logic chain is complete, the inference accuracy is high, the model has high robustness, and the scene transportability is high. The method can be suitable for actual checkpoint vehicle passing data and other data with identity tag detection; and in addition, the method can further carry out problem discovery and calibration on clocks of a signal control system and a checkpoint system.

Description

technical field [0001] The invention relates to the technical field of traffic signal timing research, and more specifically, to a method for estimating signal timing parameters at intersections based on checkpoint detection data. Background technique [0002] Road intersection refers to the intersection of two or more roads. The time ratio of red and green lights at the intersection is called signal timing. The phase of red and green signal lights refers to each control state at the signal control intersection. (A right of way), that is, the combination of different light colors displayed in different directions of various entrances, is called a traffic signal phase, which is essentially to give corresponding release time for traffic flow in different directions. [0003] Advanced urban traffic control system is one of the important ways to improve the efficiency of urban traffic operation, and it is also an important symbol of urban modernization. Intersection signal timi...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of the existing estimation and inference method of signal timing at intersections considering the fixed and single scene, insufficient overall timing inference ability and low accuracy, the present invention proposes An intersection signal timing parameter inference method based on bayonet detection data, which infers the overall signal timing parameters of the intersection, and provides an accurate data basis for data-driven traffic management and control

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