Under efficiency improvement of road networks by utilizing advanced traffic signal control methods, intelligent transportation systems intend to characterize a smart city. Recently, due to significant progress in artificial intelligence, machine learning‐based framework of adaptive traffic signal control has been highly concentrated. In particular, deep Q‐learning neural network is a model‐free technique and can be applied to optimal action selection problems. However, setting variable green time is a key mechanism to reflect traffic fluctuations such that time steps need not be fixed intervals in reinforcement learning framework. In this study, the authors proposed a dynamic discount factor embedded in the iterative Bellman equation to prevent from a biased estimation of action‐value function due to the effects of inconstant time step interval. Moreover, action is added to the input layer of the neural network in the training process, and the output layer is the estimated action‐value for the denoted action. Then, the trained neural network can be used to generate action that leads to an optimal estimated value within a finite set as the agents' policy. The preliminary results show that the trained agent outperforms a fixed timing plan in all testing cases with reducing system total delay by 20%..


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Value-based deep reinforcement learning for adaptive isolated intersection signal control

    Wan, Chia-Hao / Hwang, Ming-Chorng | IET | 2018

    Freier Zugriff

    Urban intersection signal control method based on deep reinforcement learning

    JU YANNI / MA DIE | Europäisches Patentamt | 2024

    Freier Zugriff

    Multi-intersection signal cooperative control method based on deep reinforcement learning

    MA CHANGXI / LIU YAN / ZHAO HONGXING et al. | Europäisches Patentamt | 2025

    Freier Zugriff

    Multi-intersection traffic signal control method based on deep reinforcement learning

    DENG HENG / WANG YULONG / GAO YANG et al. | Europäisches Patentamt | 2024

    Freier Zugriff