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JACIII Vol.28 No.2 pp. 431-443
doi: 10.20965/jaciii.2024.p0431
(2024)

Research Paper:

Hierarchical Reward Model of Deep Reinforcement Learning for Enhancing Cooperative Behavior in Automated Driving

Kenji Matsuda*,†, Tenta Suzuki*, Tomohiro Harada** ORCID Icon, Johei Matsuoka* ORCID Icon, Mao Tobisawa*, Jyunya Hoshino*, Yuuki Itoh*, Kaito Kumagae*, Toshinori Kagawa***, and Kiyohiko Hattori* ORCID Icon

*Tokyo University of Technology
1404-1 Katakuramachi, Hachioji, Tokyo 192-0981, Japan

Corresponding author

**Tokyo Metropolitan University
6-6 Asahigaoka, Hino, Tokyo 191-0065, Japan

***Central Research Institute of Electric Power Industry
2-6-1 Nagasaka, Yokosuka, Kanagawa 240-0196, Japan

Received:
June 16, 2023
Accepted:
November 10, 2023
Published:
March 20, 2024
Keywords:
multi-agent learning, reward design, autonomous driving, reinforcement learning
Abstract

In recent years, studies on practical application of automated driving have been conducted extensively. Most of the research assumes the existing road infrastructure and aims to replace human driving. There have also been studies that use reinforcement learning to optimize car control from a zero-based perspective in an environment without lanes, one of the existing types of road. In those studies, search and behavior acquisition using reinforcement learning has resulted in efficient driving control in an unknown environment. However, the throughput has not been high, while the crash rate has. To address this issue, this study proposes a hierarchical reward model that uses both individual and common rewards for reinforcement learning in order to achieve efficient driving control in a road, we assume environments of one-way, lane-less, automobile-only. Automated driving control is trained using a hierarchical reward model and evaluated through physical simulations. The results show that a reduction in crash rate and an improvement in throughput is attained by increasing the number of behaviors in which faster cars actively overtake slower ones.

Individual and common rewards for teamwork

Individual and common rewards for teamwork

Cite this article as:
K. Matsuda, T. Suzuki, T. Harada, J. Matsuoka, M. Tobisawa, J. Hoshino, Y. Itoh, K. Kumagae, T. Kagawa, and K. Hattori, “Hierarchical Reward Model of Deep Reinforcement Learning for Enhancing Cooperative Behavior in Automated Driving,” J. Adv. Comput. Intell. Intell. Inform., Vol.28 No.2, pp. 431-443, 2024.
Data files:
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