This book constitutes the thoroughly refereed post-conference proceedings of the 5th International Conference on Smart Cities and Green ICT Systems, SMARTGREENS 2016, and the Second International Conference on Vehicle Technology and Intelligent Transport Systems, VEHITS 2016, held in Rome, Italy, in April 2016.The 11 full papers of SMARTGREENS 2016 presented were carefully reviewed and selected from 72 submissions. VEHITS 2016 received 49 paper submissions from which 5 papers were selected and published in this book. The papers reflect topics such as smart cities, energy-aware systems and technologies, sustainable computing and communications, sustainable transportation and smart mobility.