Single intersection signal lamp time control method and system

The present invention relates to a single intersection signal lamp time control method and system, belonging to the traffic transportation control technology field. The single intersection signal lamp time control method and system divide vehicle queuing states into nk types according to four vehicle coming directions at the single intersection and the different numbers of queuing vehicles in each type of the vehicle queuing states, wherein n is the type of vehicle queuing length, k is the number of lanes at the single intersection; the number of traffic signal phases, the minimum time of each phase, the number of added time period of a green light and the length of each time period are taken as traffic behaviors; and learning is performed through adoption of the Q learning method according to the divided vehicle queuing states and the determined traffic behaviors. Through changing the definition of the state space, the vehicle queuing states divided by single intersection signal lamp time control method and