Vehicle-road cooperative scheduling method for rapid passing of emergency vehicles

Abstract

The invention provides a vehicle-road cooperative scheduling method for rapid passing of emergency vehicles, and the method comprises the steps: carrying out the iterative calculation of a scheduling decision according to real-time path planning and traffic signals, wherein the decision every t time periods includes: according to the current road condition, the current position of the emergency vehicle and the destination, calculating the optimal driving path of the emergency vehicle under the current traffic condition; constructing a dynamic directed graph, and selecting a top-K relation neighbor intersection of the current position of the emergency vehicle; extracting importance scores and hidden features of states of neighbor intersections in the top-K relation by using a multi-head map attention network, and modeling the overall influence of the neighbors on the current intersections in different subspaces to obtain processed features; and calculating the traffic light phase action of the maximum long-term reward brought by different traffic light phase actions in the current state. According to the invention, the driving route can be dynamically adjusted in real time, and the traffic signal is coordinated and controlled along the dynamically updated path so that the dynamic traffic flow can be better processed.

Description

technical field [0001] The invention relates to the technical field of vehicle-road coordination systems, in particular to a method for helping emergency vehicles to quickly reach a destination under congested traffic conditions by jointly dispatching traffic lights and vehicle travel paths. Background technique [0002] With the increase of urban population and vehicle ownership, cities are facing increasingly serious traffic congestion problems. Severe traffic congestion not only causes additional air pollution and energy / time wastage, but in the event of an accident, it may also hinder the arrival of emergency vehicles such as ambulances, fire trucks and police cars, thereby adversely affecting critical services and even affecting human life safety. Therefore, it is of great significance to design an effective dispatching method to help emergency vehicles reach their destinations faster. [0003] To solve this problem, one technical route is to adopt a vehicle-centric a...

AI Technical Summary

Problems solved by technology

Along this technical route, some recent studies have combined vehicle-centric and road-centric approaches, but they only plan the routes of emergency vehicles in advance, and then optimize traffic signals along the preset routes, unable to cope with dynamically changing traffic environment

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