Intelligent transportation systems (ITS) have shown great effectiveness at preventing congested traffic and improving traffic safety in recent years. There is a need to develop new communication technologies for integrated systems in future ITSs to meet the individual requirements of both safety and non-safety applications in vehicular communication technology.

Although modern ITS has extensively benefitted from Internet of Things (IoT) technology, the risks and challenges in safety and reliability have also increased substantially. With numerous connected vehicles getting direct access to sensitive information, ensuring the security and privacy of transmitted vehicular data is vital. Blockchain technology is a decentralized, distributed digital ledger with records called blocks used to record crucial information. Any involved block cannot be altered retroactively, without the alteration of all subsequent blocks. With its unique features, applying blockchain design into ITS could make more advanced applications possible. In this challenging context, effective blockchain-based ITS solutions and strategies emphasizing secure data sharing and privacy-preserving will provide continuous improvement for real ITS implementations.

This Special Issue will focus on advanced developments, technologies, and challenges regarding security and privacy issues in a blockchain-based ITS environment, and in particular its adoption within the cloud-assisted vehicular ad hoc network (VANET) research field. We are particularly interested in the latest findings from research, ongoing projects, and review articles that can provide readers with current research trends and solutions. We hope to bring quality research work to the forefront and enhance our understanding of security and safety issues in blockchain-based intelligent transportation systems. This Special Issue will provide the research and industrial communities the opportunity to disseminate new scenarios, results, and development efforts related to blockchain-based ITS.

Potential topics include but are not limited to the following:

• Cloud-based vehicular data gathering and processing
• Decentralized key management in cloud-assisted IoT scenarios
• Anonymous authentication for privacy preservation in blockchain-based ITS
• Privacy concepts and applications in cloud-based ITS platforms
• Optimization of dynamic processes in cloud-assisted VANETs
• Privacy-aware secure protocols for blockchain-based VANETs
• Big data technologies and applications in ITS
• Information revelation and privacy in IoT
• Security and privacy issues in mobile VANET infrastructure
• New models and solutions for blockchain in cloud/edge-based VANET infrastructure
• Blockchain-based trustworthy applications in VANETs
• Cybersecurity for IoT and cloud/edge computing