HiLLTS: LLM-Guided Traffic Control for Sustainable Transport
A new research paper proposes HiLLTS, a hierarchical LLM-guided traffic signal control framework to reduce congestion and emissions. The system uses a three-layer architecture with a central coordinator, district layer, and cluster-level intersection agents. It outperforms non-LLM baselines in both congestion and environmental metrics, addressing limitations of traditional fixed-time, actuated, and RL-based methods that require extensive retraining and simulation data. The paper is available on arXiv.
Key facts
- HiLLTS stands for Hierarchical LLM-Guided Traffic Signal Control.
- The framework uses a three-layer architecture: central coordination agent, district layer, and cluster-level intersection agents.
- It aims to reduce fuel consumption, greenhouse gas emissions, and commuter delays.
- Compared to non-LLM baselines, HiLLTS shows consistent improvements.
- Traditional methods like fixed-time scheduling and RL require extensive retraining.
- The paper is published on arXiv with ID 2607.22691.
- The approach is zero-shot, meaning no retraining needed for new networks.
- The research addresses urban traffic congestion in modern cities.
Entities
Institutions
- arXiv