Signal control method and system for emergency vehicles at intersection

The invention provides a signal control method and system for emergency vehicles at an intersection. The method comprises the following steps: acquiring state information of vehicles in a road in a target area; processing the state information of the vehicle based on a preset discretization model to obtain a state matrix of the vehicle; when a signal phase is input into the traffic signal, judging the state matrix of the common social vehicle and the state matrix of the emergency vehicle based on a preset deep reinforcement learning model to obtain a judgment result; and determining the signal phase of the traffic signal at the next moment based on the judgment result. Traffic signal lamp control is carried out through deep reinforcement learning, the complex traffic condition can be better adapted, the intersection queuing condition is effectively reduced, when emergency vehicles pass through the intersection, passing of the emergency vehicles and social vehicles can be planned as a whole, rapid passing of t