This book includes selected papers from the sixth International Conference on Smart Vehicular Technology, Transportation, Communication, and Applications (VTCA 2024), hosted by Shu-Te University and Taiwan Association for Web Intelligence Consortium, and is technically sponsored by National Kaohsiung University of Science and Technology and Nanchang Institute of Technology, during April 16-18, 2024. The book includes research works from engineers, researchers, and practitioners interested in the advances and applications in the field of vehicle technology and communication. The book covers three tracks, namely (1) vehicular electronics, (2) intelligent transportation systems and applications, and (3) vehicular networking security.