This book constitutes the thoroughly refereedproceedings of the 4th International Conference on
Smart Cities and Green ICTSystems SMARTGREENS 2015 and the 1st InternationalConference on
Vehicle Technology and Intelligent Transport Systems VEHITS2015 held in Lisbon Portugal in
May 2015.The 15 full papers of SMARTGREENS 2015 presentedwere carefully reviewed and selected
from 73 submissions. VEHITS 2015 received27 paper submissions from which 3 papers were selected
and published in thisbook. The papers reflect topics such as smart cities energy-aware systems
andtechnologies sustainable computing and communications sustainabletransportation and smart
mobility.
