• TransRAG integrates retrieval-augmented generation and chain-of-thought prompting to mitigate hallucinations and black-box issues in foundational models for parallel transportation.
• A three-layer architecture (storage, management, execution) enables personalized, diverse, and adaptive traffic services in dynamic environments.
• Continuous real-virtual interaction optimizes decisions and incrementally updates knowledge, enhancing system reliability and trustworthiness.
• Integration of blockchain, smart contracts, and caching addresses critical challenges (e.g., single point of failure, privacy breaches, data access delays), advancing the transition to 6S Transportation 5.0.