Jammed intersection signal timing method and traffic signal lamp control system

Abstract

The invention relates to an intersection traffic signal control method and system and especially relates to a jammed intersection signal timing method and a ground induction and monitoring system. The method and system can control whether to switch traffic signal lamp phase by calculating average vehicle head distance in parking, average flow, yellow light time and full red time, and then calculating monitoring distance and monitoring whether the monitoring area is occupied in a monitoring range in real time. Exit way vehicle pass state information is fed back to an intersection signal control system, so that inner space of an intersection can always be utilized by vehicles, possibility of generation of large-area jamming at peak period is reduced, traffic emergency rescue speed at the peak period can be improved, and the case that a rescue vehicle cannot reach the accident scene is prevented. The method can enable the effect of a dynamic path inducing system to be played to the fullest degree, and can provide guarantee for the smooth flow of the urban traffic network.

Description

technical field [0001] The invention relates to a traffic signal control method and system at an intersection, in particular to a signal timing method at a congested intersection and a ground sensing and monitoring system. Background technique [0002] The basic idea of ​​the existing intersection signal timing method is to design the appropriate green light time so that the vehicles arriving at the entrance can be released in time. The control goal is often to minimize the number of stops or the overall delay. The realization methods can generally be divided into timing and timing. Control and induction control, because the intersection is generally divided into main road and secondary road according to the flow difference, and the intersection is formed by the intersection of the main road and the secondary road, the existing induction control can be divided into secondary road and half according to the position of the detector. Induction, main road semi-induction and full...

AI Technical Summary

Problems solved by technology

In order to ensure that the above two parts of vehicles do not line up inside the intersection, it is necessary to leave a queuing space for these vehicles at the exit. Otherwise, even if there is no congestion at each exit, when the phase is switched, if there is not enough Vehicles entering and exiting the road will cause the above-mentioned vehicles to stay in the intersection, and when vehicles traveling in other directions enter the intersection, it will cause confusion in the movement of vehicles in the intersection

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