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Traffic Signal Time Optimization Based on Deep Q-Network

Authors
Joo, HyunjinLim, Yujin
Issue Date
Nov-2021
Publisher
MDPI
Keywords
deep Q-learning; reinforcement learning; traffic signal control; capacity; SUMO
Citation
APPLIED SCIENCES-BASEL, v.11, no.21, pp 1 - 14
Pages
14
Journal Title
APPLIED SCIENCES-BASEL
Volume
11
Number
21
Start Page
1
End Page
14
URI
https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/146147
DOI
10.3390/app11219850
ISSN
2076-3417
2076-3417
Abstract
Because cities worldwide have high population concentration, traffic congestion is a key problem that needs to be addressed. As modern technology advances, smart traffic management is able to collect data from the environment and uses a contextual signal assignment to determine the traffic flow at intersections and improve the traffic conditions. In this paper, we propose a green signal time allocation system based on a deep Q-network (DQN) that can maximize the capacity at intersections and assign the green light time according to the traffic conditions. The proposed system also aims to reduce the standard deviation of each lane at an intersection by considering the standard deviation of the waiting time. As a result, selfish green signal allocations can be reduced. Thus, the proposed system can achieve better experimental results in a dynamic environment than those of the green signal phase sequence allocation system.
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