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Reinforcement learning (RL) techniques for traffic signal control (TSC) have gained increasing popularity in recent years. However, most existing RL-based TSC methods tend to focus primarily on the RL model structure while neglecting the…

Machine Learning · Computer Science 2024-05-03 Liang Zhang , Shubin Xie , Jianming Deng

With increasing urban traffic complexity, Traffic Signal Control (TSC) is essential for optimizing traffic flow and improving road safety. Large Language Models (LLMs) emerge as promising approaches for TSC. However, they are prone to…

Artificial Intelligence · Computer Science 2025-10-31 Xinhang Li , Qing Guo , Junyu Chen , Zheng Guo , Shengzhe Xu , Lei Li , Lin Zhang

In reinforcement learning-based (RL-based) traffic signal control (TSC), decisions on the signal timing are made based on the available information on vehicles at a road intersection. This forms the state representation for the RL…

Systems and Control · Electrical Eng. & Systems 2024-11-13 Lawrence Francis , Blessed Guda , Ahmed Biyabani

Finding the optimal signal timing strategy is a difficult task for the problem of large-scale traffic signal control (TSC). Multi-Agent Reinforcement Learning (MARL) is a promising method to solve this problem. However, there is still room…

Machine Learning · Computer Science 2021-09-14 Xiaoqiang Wang , Liangjun Ke , Zhimin Qiao , Xinghua Chai

Recent years have witnessed substantial growth in adaptive traffic signal control (ATSC) methodologies that improve transportation network efficiency, especially in branches leveraging artificial intelligence based optimization and control…

Systems and Control · Electrical Eng. & Systems 2022-11-29 Xiaoyu Wang , Scott Sanner , Baher Abdulhai

Reinforcement learning (RL) is currently used in various real-life applications. RL-based solutions have the potential to generically address problems, including the ones that are difficult to solve with heuristics and meta-heuristics and,…

Machine Learning · Computer Science 2022-11-24 Rafael F. Reale , Joberto S. B. Martins

Adaptive Traffic Signal Control (ATSC) has become a popular research topic in intelligent transportation systems. Regional Traffic Signal Control (RTSC) using the Multi-agent Deep Reinforcement Learning (MADRL) technique has become a…

Multiagent Systems · Computer Science 2025-02-20 Hankang Gu , Shangbo Wang , Dongyao Jia , Yuli Zhang , Yanrong Luo , Guoqiang Mao , Jianping Wang , Eng Gee Lim

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

Connected Autonomous Vehicles will make autonomous intersection management a reality replacing traditional traffic signal control. Autonomous intersection management requires time and speed adjustment of vehicles arriving at an intersection…

Multiagent Systems · Computer Science 2022-02-10 Udesh Gunarathna , Shanika Karunasekara , Renata Borovica-Gajic , Egemen Tanin

In recent years, control under urban intersection scenarios becomes an emerging research topic. In such scenarios, the autonomous vehicle confronts complicated situations since it must deal with the interaction with social vehicles timely…

Artificial Intelligence · Computer Science 2021-09-23 Yuqi Liu , Qichao Zhang , Dongbin Zhao

Deep Reinforcement Learning (DRL) uses diverse, unstructured data and makes RL capable of learning complex policies in high dimensional environments. Intelligent Transportation System (ITS) based on Autonomous Vehicles (AVs) offers an…

Machine Learning · Computer Science 2022-06-30 Anum Mushtaq , Irfan ul Haq , Muhammad Azeem Sarwar , Asifullah Khan , Omair Shafiq

Traffic congestion in metropolitan areas presents a formidable challenge with far-reaching economic, environmental, and societal ramifications. Therefore, effective congestion management is imperative, with traffic signal control (TSC)…

Systems and Control · Electrical Eng. & Systems 2024-06-13 Maonan Wang , Aoyu Pang , Yuheng Kan , Man-On Pun , Chung Shue Chen , Bo Huang

Reinforcement learning (RL) has been widely used in decision-making and control tasks, but the risk is very high for the agent in the training process due to the requirements of interaction with the environment, which seriously limits its…

Machine Learning · Computer Science 2024-09-13 Xuemin Hu , Pan Chen , Yijun Wen , Bo Tang , Long Chen

In the backdrop of an increasingly pressing need for effective urban and highway transportation systems, this work explores the synergy between model-based and learning-based strategies to enhance traffic flow management by use of an…

Systems and Control · Electrical Eng. & Systems 2025-02-04 Filippo Airaldi , Bart De Schutter , Azita Dabiri

We propose AttendLight, an end-to-end Reinforcement Learning (RL) algorithm for the problem of traffic signal control. Previous approaches for this problem have the shortcoming that they require training for each new intersection with a…

Machine Learning · Computer Science 2020-10-13 Afshin Oroojlooy , Mohammadreza Nazari , Davood Hajinezhad , Jorge Silva

Reinforcement Learning (RL) is a potent tool for sequential decision-making and has achieved performance surpassing human capabilities across many challenging real-world tasks. As the extension of RL in the multi-agent system domain,…

Artificial Intelligence · Computer Science 2024-08-20 Ruiqi Zhang , Jing Hou , Florian Walter , Shangding Gu , Jiayi Guan , Florian Röhrbein , Yali Du , Panpan Cai , Guang Chen , Alois Knoll

Currently, traffic signal control (TSC) methods based on reinforcement learning (RL) have proven superior to traditional methods. However, most RL methods face difficulties when applied in the real world due to three factors: input, output,…

Multiagent Systems · Computer Science 2024-07-16 Haoyuan Jiang , Xuantang Xiong , Ziyue Li , Hangyu Mao , Guanghu Sui , Jingqing Ruan , Yuheng Cheng , Hua Wei , Wolfgang Ketter , Rui Zhao

Effective network congestion control strategies are key to keeping the Internet (or any large computer network) operational. Network congestion control has been dominated by hand-crafted heuristics for decades. Recently,…

Traffic signal control systems (TSCSs) are integral to intelligent traffic management, fostering efficient vehicle flow. Traditional approaches often simplify road networks into standard graphs, which results in a failure to consider the…

Multiagent Systems · Computer Science 2025-04-04 Kang Wang , Zhishu Shen , Zhen Lei , Tiehua Zhang

This article proposes a methodology for the development of adaptive traffic signal controllers using reinforcement learning. Our methodology addresses the lack of standardization in the literature that renders the comparison of approaches…

Systems and Control · Electrical Eng. & Systems 2021-01-26 Guilherme S. Varela , Pedro P. Santos , Alberto Sardinha , Francisco S. Melo