I am currently a Ph.D. candidate in Transportation Engineering at the College of Transportation, Tongji University, where I work under the supervision of Dr. Xiong Xi (Research Professor), Prof. Xie Chi, and Prof. Ou Dongxiu.

My research focuses on connected and automated transportation systems, multi-agent coordination, reinforcement learning, model predictive control, etc.

📝 Publications

• A Multi-Agent Rollout Approach for Highway Bottleneck Decongestion in Mixed Autonomy

  Liu, L., Wang, M., Pun, M., and Xiong, X.

  In 27th IEEE International Conference on Intelligent Transportation Systems, ITSC 2024.

• Reinforcement Learning from Human Feedback for Lane Changing of Autonomous Vehicles in Mixed Traffic

  Wang, Y., Liu, L., Wang, M., and Xiong, X.

  In Transportation Research Board 104th Annual Meeting, TRB 2025.

• Combining Policy Gradient and Safety-based Control for Autonomous Driving

  Xiong, X. and Liu, L.

  In 24th COTA International Conference of Transportation Professional, CICTP 2024.

🎖 Honors and Awards

• 2020.12，National Scholarship (Undergraduate).
• 2021.04，Meritorious Winner, Interdisciplinary Contest in Modeling.
• 2021.11，First Prize, National Undergraduate Mathematical Contest in Modeling.
• 2021.12，National Scholarship (Undergraduate).
• 2022.12，National Scholarship (Undergraduate).
• 2023.07，Outstanding Graduate of Shaanxi Province Universities.

📖 Educations

• 2019.09-2023.06, B.Eng. in Automation Engineering,

• College of Electronic and Control Engineering, Chang’an University

  Xi’an, China.

• 2023.09- Present, Ph.D. Candidate in Transportation Engineering,

• College of Transportation, Tongji University

  Shanghai, China.

💬 Invited Talks

• 2024.07, Oral Presentation, CICTP 2024, Shenzhen, China.

  Combining Policy Gradient and Safety-based Control for Autonomous Driving.

• 2024.09, Oral Presentation, IEEE ITSC 2024, Edmonton, Canada.

  A Multi-Agent Rollout Approach for Highway Bottleneck Decongestion in Mixed Autonomy.