Performance Comparison of Deep RL Algorithms for Mixed Traffic Cooperative Lane-Changing

• URL: http://arxiv.org/abs/2407.02521v1
• Date: Tue, 25 Jun 2024 07:49:25 GMT
• Title: Performance Comparison of Deep RL Algorithms for Mixed Traffic Cooperative Lane-Changing
• Authors: Xue Yao, Shengren Hou, Serge P. Hoogendoorn, Simeon C. Calvert,
• Abstract summary: Lane-changing is a challenging scenario for connected and automated vehicles (CAVs) because of the complex dynamics and high uncertainty of the traffic environment. This study enhances the current CLCMT mechanism by considering both the uncertainty of the human-driven vehicles (HVs) and the microscopic interactions between HVs and CAVs. Performance comparison among the four DRL algorithms demonstrates that DDPG, TD3, SAC, and PPO algorithms can deal with uncertainty in traffic environments.
• Score: 3.4761212729163304
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Lane-changing (LC) is a challenging scenario for connected and automated vehicles (CAVs) because of the complex dynamics and high uncertainty of the traffic environment. This challenge can be handled by deep reinforcement learning (DRL) approaches, leveraging their data-driven and model-free nature. Our previous work proposed a cooperative lane-changing in mixed traffic (CLCMT) mechanism based on TD3 to facilitate an optimal lane-changing strategy. This study enhances the current CLCMT mechanism by considering both the uncertainty of the human-driven vehicles (HVs) and the microscopic interactions between HVs and CAVs. The state-of-the-art (SOTA) DRL algorithms including DDPG, TD3, SAC, and PPO are utilized to deal with the formulated MDP with continuous actions. Performance comparison among the four DRL algorithms demonstrates that DDPG, TD3, and PPO algorithms can deal with uncertainty in traffic environments and learn well-performed LC strategies in terms of safety, efficiency, comfort, and ecology. The PPO algorithm outperforms the other three algorithms, regarding a higher reward, fewer exploration mistakes and crashes, and a more comfortable and ecology LC strategy. The improvements promise CLCMT mechanism greater advantages in the LC motion planning of CAVs.

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