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Inefficient traffic signal control methods may cause numerous problems, such as traffic congestion and waste of energy. Reinforcement learning (RL) is a trending data-driven approach for adaptive traffic signal control in complex urban…

Signal Processing · Electrical Eng. & Systems 2021-07-14 Zhenning Li , Chengzhong Xu , Guohui Zhang

Lane change decision-making is a complex task due to intricate vehicle-vehicle and vehicle-infrastructure interactions. Existing algorithms for lane-change control often depend on vehicles with a certain level of autonomy (e.g., autonomous…

Systems and Control · Electrical Eng. & Systems 2024-12-09 Ke Sun , Huan Yu

Deep reinforcement learning (DRL) allows a system to interact with its environment and take actions by training an efficient policy that maximizes self-defined rewards. In autonomous driving, it can be used as a strategy for high-level…

Robotics · Computer Science 2024-07-02 Xibo Li , Shruti Patel , Christof Büskens

Traffic signal control has long been considered as a critical topic in intelligent transportation systems. Most existing learning methods mainly focus on isolated intersections and suffer from inefficient training. This paper aims at the…

Machine Learning · Computer Science 2019-10-01 Yusen Huo , Qinghua Tao , Jianming Hu

The deployment of Autonomous Vehicles (AVs) poses considerable challenges and unique opportunities for the design and management of future urban road infrastructure. In light of this disruptive transformation, the Right-Of-Way (ROW)…

Machine Learning · Computer Science 2023-03-23 Qiming Ye , Yuxiang Feng , Jose Javier Escribano Macias , Marc Stettler , Panagiotis Angeloudis

This paper presents a safe learning-based eco-driving framework tailored for mixed traffic flows, which aims to optimize energy efficiency while guaranteeing safety during real-system operations. Even though reinforcement learning (RL) is…

Systems and Control · Electrical Eng. & Systems 2024-02-01 Ke Lu , Dongjun Li , Qun Wang , Kaidi Yang , Lin Zhao , Ziyou Song

We introduce Traffic-R1, a 3B-parameter foundation model with human-like reasoning for Traffic signal control (TSC), developed via self-exploration and iterative reinforcement of LLM with expert guidance in a simulated traffic environment.…

Artificial Intelligence · Computer Science 2025-10-23 Xingchen Zou , Yuhao Yang , Zheng Chen , Xixuan Hao , Yiqi Chen , Chao Huang , Yuxuan Liang

In traffic signal control, flow-based (optimizing the overall flow) and pressure-based methods (equalizing and alleviating congestion) are commonly used but often considered separately. This study introduces a unified framework using…

Systems and Control · Electrical Eng. & Systems 2024-01-18 Chaolun Ma , Bruce Wang , Zihao Li , Ahmadreza Mahmoudzadeh , Yunlong Zhang

Traffic congestion, primarily driven by intersection queuing, significantly impacts urban living standards, safety, environmental quality, and economic efficiency. While Traffic Signal Control (TSC) systems hold potential for congestion…

Machine Learning · Computer Science 2026-01-14 Qiang Li , Jin Niu , Lina Yu

Traffic signal control has the potential to reduce congestion in dynamic networks. Recent studies show that traffic signal control with reinforcement learning (RL) methods can significantly reduce the average waiting time. However, a…

Systems and Control · Electrical Eng. & Systems 2024-06-13 Maonan Wang , Yutong Xu , Xi Xiong , Yuheng Kan , Chengcheng Xu , Man-On Pun

Autonomous driving in urban crowds at unregulated intersections is challenging, where dynamic occlusions and uncertain behaviors of other vehicles should be carefully considered. Traditional methods are heuristic and based on…

Robotics · Computer Science 2021-09-20 Peide Cai , Sukai Wang , Hengli Wang , Ming Liu

Traffic signal control (TSC) is a high-stakes domain that is growing in importance as traffic volume grows globally. An increasing number of works are applying reinforcement learning (RL) to TSC; RL can draw on an abundance of traffic data…

Artificial Intelligence · Computer Science 2022-10-05 Rex Chen , Fei Fang , Norman Sadeh

In many practical control applications, the performance level of a closed-loop system degrades over time due to the change of plant characteristics. Thus, there is a strong need for redesigning a controller without going through the system…

Systems and Control · Electrical Eng. & Systems 2023-12-01 Mei Minami , Yuka Masumoto , Yoshihiro Okawa , Tomotake Sasaki , Yutaka Hori

The optimization of traffic signal control (TSC) is critical for an efficient transportation system. In recent years, reinforcement learning (RL) techniques have emerged as a popular approach for TSC and show promising results for highly…

Artificial Intelligence · Computer Science 2023-11-28 Jianxiong Li , Shichao Lin , Tianyu Shi , Chujie Tian , Yu Mei , Jian Song , Xianyuan Zhan , Ruimin Li

Urban traffic is subject to disruptions that cause extended waiting time and safety issues at signalized intersections. While numerous studies have addressed the issue of intelligent traffic systems in the context of various disturbances,…

Artificial Intelligence · Computer Science 2024-09-16 Qinchen Yang , Zejun Xie , Hua Wei , Desheng Zhang , Yu Yang

Adaptive traffic signal control, which adjusts traffic signal timing according to real-time traffic, has been shown to be an effective method to reduce traffic congestion. Available works on adaptive traffic signal control make responsive…

Networking and Internet Architecture · Computer Science 2017-05-09 Juntao Gao , Yulong Shen , Jia Liu , Minoru Ito , Norio Shiratori

In the context of global urbanization and motorization, traffic congestion has become a significant issue, severely affecting the quality of life, environment, and economy. This paper puts forward a single-agent reinforcement learning…

Machine Learning · Computer Science 2026-01-14 Qiang Li , Jin Niu , Qin Luo , Lina Yu

Designing optimal controllers continues to be challenging as systems are becoming complex and are inherently nonlinear. The principal advantage of reinforcement learning (RL) is its ability to learn from the interaction with the environment…

Machine Learning · Computer Science 2018-10-05 Savinay Nagendra , Nikhil Podila , Rashmi Ugarakhod , Koshy George

Reinforcement learning (RL) shows great potential for optimizing multi-vehicle cooperative driving strategies through the state-action-reward feedback loop, but it still faces challenges such as low sample efficiency. This paper proposes a…

Artificial Intelligence · Computer Science 2025-08-12 Ye Han , Lijun Zhang , Dejian Meng , Zhuang Zhang

Urban Traffic Control (UTC) plays an essential role in Intelligent Transportation System (ITS) but remains difficult. Since model-based UTC methods may not accurately describe the complex nature of traffic dynamics in all situations,…

Artificial Intelligence · Computer Science 2018-08-27 Yilun Lin , Xingyuan Dai , Li Li , Fei-Yue Wang