This book contains the proceedings of the 3rd International Conference on Vehicle Technology and Intelligent Transport Systems (VEHITS 2017) which was organized and sponsored by the Institute for Systems and Technologies of Information, Control and Communication (INSTICC) and held in cooperation with the Associação Brasileira do Veículo Elétrico (ABVE), the Connected Vehicle Trade Association (CVTA), the Associação Portuguesa do Veículo Eléctrico (APVE) and the European Alternative Fuels Observatory (EAFO). The conference is technically co-sponsored by the IEEE Intelligent Transportation Systems Society (IEEE ITSS). VEHITS focuses on innovative applications, tools and platforms in all technology areas such as signal processing, wireless communications, informatics and electronics, related to different kinds of vehicles, including cars, off-road vehicles, trains, ships, underwater vehicles, or flying machines, and the intelligent transportation systems that connect and manage large numbers of vehicles, not only in the context of smart cities, but in many other application domains. This conference brought together researchers and practitioners interested in the advances and applications in the field of Vehicle Technology and Intelligent Transport Systems. It had four main topic areas, covering different aspects, including Intelligent Vehicle Technologies, Intelligent Transport Systems and Infrastructure, Connected Vehicles and Sustainable Transport. We believe the diversity and scope of the papers in these proceedings reflect the richness of the technical problems in each field and show clearly how new and innovative solutions are being devised to solve them. VEHITS 2017 received 77 paper submissions from 25 countries in all continents, of which 22% were accepted as full papers. The high quality of the papers received imposed difficult choices during the review process. To evaluate each submission, a double blind paper review was performed by the Program Committee, whose members are highly qualified independent researchers in the VEHITS 2017 topic areas. The high quality of VEHITS 2017 was also enhanced by three keynote lectures, delivered by experts in their fields, including: João Barros (Veniam, Portugal), Cristina Olaverri Monreal (University of Applied Sciences Technikum Wien, Austria) and Emil Vassev (Lero – The Irish Software Research Centre, UL, Limerick, Ireland). The conference was also complemented with a Special Session on Sustainable mobility solutions: vehicle and traffic simulation, on-road trials and EV charging – SMS, chaired by Prof. Carla Silva and with an Industrial Panel chaired by Dr. Joe Gibbs. All papers presented will be submitted for indexation by Thomson Reuters Conference Proceedings Citation Index (ISI), INSPEC, DBLP, EI (Engineering Index) and Scopus, and made available at the SCITEPRESS Digital Library. The best contributions to the conference and the best student submissions were distinguished with awards based on the combined marks of paper reviewing, as assessed by the Program Committee, and the quality of the presentation, as evaluated by session chairs at the conference venue. Building an interesting and successful program for the conference required the dedicated effort of many people. We would like to express our thanks, first of all, to all authors who submitted papers to VEHITS 2017. We would also like to express our gratitude to all members of the Program Committee and auxiliary reviewers, who helped us with their expertise and valuable time. Furthermore, we thank the invited speakers for their invaluable contribution and for taking the time to synthesize and prepare their talks. Finally, we gratefully acknowledge the professional support of the INSTICC team for all organizational processes.