Calculation method and system for lost time of lane green light at signalized intersection

Abstract

The invention relates to the technical field of urban road traffic signal control, and specifically discloses a method for calculating the lost time of green lights at signalized intersection lanes, including: generating lane release state information according to the corresponding relationship between intersection signal lights and lanes; receiving the release of each entrance lane status information, and send it to the data analysis unit in real time; real-time detection of the traffic flow information on the entrance lane of the intersection, and send it to the data analysis unit; the data analysis unit calculates different The corresponding green light loss time in the traffic scene, and send the green light loss time to the traffic signal controller. The invention also discloses a system for calculating the lost time of the lane green light at the signalized intersection. The method for calculating the lost time of green lights at signalized intersections provided by the present invention can accurately obtain the lost time of green lights at signalized intersections, thereby providing data support for scientifically evaluating the control benefits of signalized intersections.

Description

technical field [0001] The present invention relates to the technical field of urban road traffic signal control, and more specifically, to a method and system for calculating the lost time of green lights at signalized intersection lanes. Background technique [0002] At urban signalized intersections, due to the improper setting of the signal timing scheme, vehicles cannot pass or the green lights are empty during the phase release period, which greatly wastes precious green light time. The entrance lane of the intersection is equipped with a detector to collect traffic flow data on the lane in real time, and the green light time of the signal phase is dynamically adjusted by means of induction control, which effectively reduces the green light loss time of the intersection signal light and improves the traffic efficiency of the intersection; green light Lost time, as an effective evaluation index, can directly reflect the utilization rate of signal phase green light time,...

AI Technical Summary

Problems solved by technology

[0002] At urban signalized intersections, due to the improper setting of the signal timing scheme, vehicles cannot pass or the green lights are empty during the phase release period, which greatly wastes precious green light time. The entrance lane of the intersection is equipped with a detector to collect traffic flow data on the lane in real time, and the green light time of the signal phase is dynamically adjusted by means of induction control, which effectively reduces the green light loss time of the intersection signal light and improves the traffic efficiency of the intersection; green light Lost time, as an effective evaluation index, can directly reflect the utilization rate of signal phase green light time, quantify the utilization balance of phase green light time, analyze the shortcomings and optimization potential of existing timing schemes, so as to improve the intersection traffic The purpose of efficiency; however, the existing green light lost time collection mainly relies on manual acquisition, the workload is heavy, the collection process is cumbersome, and it is difficult to guarantee the accuracy of the data

[0003] In the prior art, by obtaining the green light time of the signal phase in advance, and under the condition of ensuring pedestrians crossing the street safely, the empty time of the actual detector is compared with the preset maximum empty time, so as to obtain the lost time of the green light; this way It is only suitable for timing control, and when the intersection adopts induction control and adaptive control, the signal phase time is dynamically adjusted with the change of traffic flow, so it is impossible to predict the phase green light time in advance, and the existing technology does not consider the vehicle's long time The green light lost time caused by occupying the road section; therefore, the existing technology has low applicability in collecting the green light lost time under different signal control methods, and cannot meet the application requirements under the development of the existing intelligent transportation technology

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