Emergency vehicle signal priority control method

Abstract

The invention provides an emergency vehicle signal priority control method. According to the method, the emergency vehicle GPS positioning data is acquired in real time, map matching of the dynamic vehicle position is carried out, shortest vehicle passing path analysis and update and signal intersection locking phase determination are realized, a driving distance between an emergency vehicle and a downstream intersection performing a signal priority task is further estimated, the intersection signal is analyzed to control the phase locking and unlocking opportunity, in-front vehicles are cleared before the emergency vehicle arrives at the intersection, absolute priority passing of the emergency vehicle is realized. Through the method, the emergency vehicle is not required to manually set a specific priority line direction and priority phases along each intersection, absolute priority passing of the signal intersection can be realized, passing efficiency of the emergency vehicle is improved, an information and parameter setting flow before performing the signal priority task is simplified, and influence of signal priority on routine traffic flow operation is further reduced.

Description

technical field [0001] The invention relates to an emergency vehicle signal priority control method. Background technique [0002] The destructiveness of urban emergencies and the serious threat to the safety of public life and property are urging all cities to build and improve the urban emergency response management system. Processing efficiency has a direct impact, and the rapid arrival of vehicles at the scene can effectively control the losses caused by emergencies. However, most cities are currently plagued by road traffic congestion, especially during peak hours, traffic paralysis on local roads is common; the actual road traffic environment cannot guarantee the priority of way given to emergency vehicles, and emergency vehicles are barrier-free Efficient traffic is difficult to achieve. In this context, it is one of the effective means to improve the efficiency of emergency vehicles to provide emergency vehicles with the right of way in time by means of signal prio...

AI Technical Summary

Problems solved by technology

In practical applications, if there are situations where the distance between intersections is short and the turning angle of the line direction is obvious, using this method will cause two or more intersections to be phase-locked at the same time, directly interfering with the normal traffic flow, and cannot Obtain better signal priority control effect

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