Deep Q‐network learning‐based active speed management under autonomous driving environments

Author:

Kang Kawon1,Park Nuri1,Park Juneyoung12,Abdel‐Aty Mohamed3

Affiliation:

1. Department of Smart City Engineering Hanyang University Erica Campus Ansan Republic of Korea

2. Department of Transportation and Logistics Engineering Hanyang University Erica Campus Ansan Republic of Korea

3. Department of Civil and Environmental Engineering University of Central Florida Orlando Florida USA

Abstract

AbstractEfficient traffic safety management necessitates real‐time crash risk prediction using expressway characteristics. With the emergence of autonomous vehicles (AVs), the development and evaluation of variable speed limit (VSL) strategies, a key active traffic management technique, become crucial for enhancing safety and mobility in mixed traffic flows. This underscores the need for optimized VSL strategies to accommodate both conventional and AVs. This paper presents a study on the development of VSL control algorithms using deep reinforcement learning in a microscopic traffic simulation. As the rewards function, time‐to‐collision and speed were considered. To enhance traffic safety, VSL strategies were refined across various market penetration of connected AVs. Analysis revealed that safety and traffic density are improved by 53% and 59%, respectively, in market penetration rate (MPR) 50, marking significant safety improvements in congested and low MPR scenarios. These findings present the importance of developing and evaluating VSL strategies for mixed traffic flow, particularly in the context of increasing the prevalence of connected and AVs.

Publisher

Wiley

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