Intelligent Blockchain-Based IoT Framework for Sustainable and Secure Transportation

The growth of smart cities has made transportation more connected than ever. Vehicles, traffic signals, and road sensors constantly exchange information to improve mobility. But this increased connectivity also brings challenges such as security risks, data tampering, privacy issues, and high energy usage. This paper proposes a simple, practical, and intelligent blockchain-based IoT framework that makes transportation systems more secure, transparent, and environmentally friendly. The framework combines IoT devices, edge-level data processing, and blockchain security to ensure that transportation data is reliable, tamper-proof, and used responsibly. It also supports sustainable mobility through energy-efficient routing and smart traffic management