US 12,456,370 B2
Training method and system for optimization of traffic signal
Hun Soon Lee, Daejeon (KR); and Moonyoung Chung, Daejeon (KR)
Assigned to ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR)
Filed by ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR)
Filed on Dec. 5, 2023, as Appl. No. 18/529,479.
Claims priority of application No. 10-2023-0022081 (KR), filed on Feb. 20, 2023.
Prior Publication US 2024/0282194 A1, Aug. 22, 2024
Int. Cl. G08G 1/081 (2006.01); G06N 20/00 (2019.01)
CPC G08G 1/081 (2013.01) [G06N 20/00 (2019.01)] 14 Claims
OG exemplary drawing
 
1. A training method for an optimization of a traffic signal, comprising:
segmenting a large-scale road network into intersection groups each comprising a plurality of intersections;
training a reinforcement learning model by allocating a training agent to each intersection group;
performing traffic signal control through an inference of an optimal traffic signal based on the trained reinforcement learning model;
evaluating whether results of the execution of the traffic signal control satisfy a preset goal of learning for traffic signal optimization; and
repeatedly training the reinforcement learning model based on results of the evaluation,
wherein the segmenting of the large-scale road network into the intersection groups comprises segmenting the large-scale road network by applying at least one of a first segmentation method of segmenting a plurality of intersections that constitute the large-scale road network into intersection groups that are operated according to a fixed traffic signal method and a second segmentation method of segmenting intersections according to predetermined priority into intersection groups on the basis of a degree of vehicle congestion in each intersection.