A method of bus priority signal control

Abstract

The invention discloses a bus priority signal control method, which adopts a priority control mode combining mode optimization and adaptive priority control, predicts the arrival time of vehicles based on real-time bus positioning data, further formulates a refined bus priority strategy, and weighs the traffic direction of the bus The green time requirements and release time of the release phase and other phases, under the premise of not changing the phase sequence and stabilizing the length of the signal cycle, fine-tune the release time of each phase in the cycle, so that the bus can pass the intersection first at the arrival time, and at the same time Reduce the green time and empty space of other phases, and improve the overall green time utilization rate of the intersection under the premise of meeting the needs of bus priority, and minimize the impact of bus priority on other conflicts flowing to social vehicles, and give consideration to buses to the greatest extent Priority traffic demand and stable traffic demand of social vehicles ensure the order and efficiency of intersection traffic, especially at intersections with large traffic volumes.

Description

technical field [0001] The invention relates to the technical field of road traffic control research, in particular to a bus priority signal control method. Background technique [0002] Bus priority control is one of the important means of current urban road traffic signal management and control. Most of the existing bus priority methods are realized by special phase insertion, early red light break, and green light extension. It is a preset fixed length, and real-time phase adjustment is implemented according to the bus arrival detection at the intersection, so as to achieve the purpose of bus priority. [0003] Patent No. CN105513381B discloses a bus priority signal control system and method, including multiple vehicle-mounted devices or vehicle-mounted RFID cards, multiple signal priority intersection devices, the vehicle-mounted devices or vehicle-mounted RFID cards are set at the bus end, and the bus equipped with vehicle-mounted devices When the vehicle passes throug...

AI Technical Summary

Problems solved by technology

However, this scheme adopts phase extension, early start, and phase insertion of fixed duration, which all cause sudden changes in the signal scheme of the bus arrival period (such as phase extension, cycle length change caused by early start, and phase sequence change caused by phase insertion). In particular, it has a direct impact on the normal traffic of social vehicles in conflicting directions, increasing the length of vehicle parking delays at intersections. This problem occurs at signal-controlled intersections along bus lines with high bus departure frequencies and signal-controlled intersections where multiple priority lines overlap. intersection highlighted

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