Intersection bus signal priority control system and control method based on C-V2X

Abstract

The invention provides an intersection bus signal priority control system and control method based on C-V2X. Instrumentation from buses to a road traffic signal control machine and interconnection between a signal control center system and a bus operation management system are supported, dynamic priority adjustment of bus signals and active bus priority are achieved, the intersection bus signal priority control system comprises the road traffic signal control machine, traffic signal lamps, a road traffic signal control system, a RSU device, a C-V2X communication base station, a V2X server, a V2X application platform, the bus operation management system and a OBU device, the OBU device uploads bus information and sends the bus information to the road traffic signal control system, the roadtraffic signal control system is in interaction with the bus operation management system and sends bus signal priority requests and estimated time of arrival to the road traffic signal control machine, and the road traffic signal control machine makes decisions to respond to the priority requests or not to respond to the priority requests, gives out a priority control strategy to adjust phase positions of the traffic signal lamps and gives bus traffic priority.

Description

technical field [0001] The invention relates to the field of intelligent traffic control, in particular to a C-V2X-based intersection bus signal priority control system and control method. Background technique [0002] At present, my country's urbanization and motorization are progressing rapidly, and the traffic demand is constantly increasing, while the development of road traffic infrastructure is relatively lagging behind, and the contradiction between traffic demand and supply is prominent, resulting in frequent traffic congestion. Prioritizing the development of urban public transport is an important means and an effective way to improve the utilization efficiency of transport resources and alleviate traffic congestion. Through the analysis, it can be seen that the intersection delay time is much longer than the road section delay during bus passing. It is an effective method recognized by the industry to give priority signals to passing buses at intersections to reduc...

AI Technical Summary

Problems solved by technology

Space resources at urban intersections are very limited. Adding designated bus lanes necessary for direct detection at intersections that serve as road traffic bottlenecks requires reducing other flows to motor vehicle lanes, which has a great impact on intersection traffic; methods based on image recognition have high requirements for the detection environment; Radio frequency identification equipment is costly, easily damaged, and requires heavy maintenance workload. Due to the limitations of installation conditions and detection range, it is difficult to obtain comprehensive road traffic status information; traditional GPS detection has problems such as positioning errors, signal blind spots, and communication delays.

Limited by the communication method and timeliness, the vehicle detection of the bus signal priority control system generally adopts one-way communication. The result of the priority control is not fed back to the bus, and the driver cannot be reminded or assisted driving, and it has nothing to do with the bus operation management system. Information interaction, information such as the running status and punctuality of buses in transit cannot be grasped, which reduces the effect of bus priority control

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