A signal timing method for emergency vehicles passing through intersections based on v2x technology

Abstract

The invention discloses a signal timing method for emergency vehicles passing through an intersection based on V2X technology, comprising the following steps: A1: Obtaining traffic flow and vehicle driving state data of each road section on the driving path through V2X road surface equipment and judging the vehicle driving path, And use the corresponding relationship between the travel time and the traffic flow in the Davidson function to obtain the shortest travel time of the emergency vehicle on a section of road, and use the Dijkstra algorithm to optimize the shortest time path; A2: determine the path according to the shortest path obtained The node of the intersection calculates the optimization strategy of the intersection, and adjusts the traffic signal of the intersection according to the optimization strategy. The present invention can comprehensively realize the path selection of emergency vehicles when performing tasks, and dynamically adjust the planning according to the real-time virtual signal lights allocated by path selection; make the travel of emergency vehicles more efficient; at the same time, minimize the impact of single intersection signal light phase changes on the traffic efficiency of surrounding road networks influence and realize global planning.

Description

technical field [0001] The invention relates to the technical field of traffic signals, in particular to a signal timing method for emergency vehicles passing through intersections based on V2X technology. Background technique [0002] In recent years, with the rapid growth of my country's GDP, the scale of cities has continued to expand, and urban traffic has become more and more congested. Urban traffic congestion not only brings serious environmental pollution, but also delays the travel time of vehicles, which has a negative effect on the normal work of emergency vehicles (including police cars, fire trucks, engineering rescue vehicles, ambulances and traffic supervision accident investigation vehicles, etc.) extremely difficult. When an emergency occurs, due to traffic congestion, emergency vehicles are often stranded on the road, making it difficult to carry out rescue work in the first place. Moreover, there are great potential safety hazards when emergency vehicles...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the defects of the prior art, provide a signal timing method for emergency vehicles passing through intersections based on V2X technology, and solve the serious problem of traffic congestion at present, even though emergency vehicles enjoy the right of way, However, it is difficult to pass efficiently or even cause accidents on congested roads, thus delaying the best rescue time

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