Smart City Concepts: Chances and Risks of Energy Efficient Urban Development -- Smart Cities Concept and Challenges: Bases for the Assessment of Smart City Projects Constructing Human Smart Cities -- An Open Platform for Children's Independent Mobility -- Architectures and Requirements for the Development of Smart Cities: A Literature Study -- People in Smart Buildings: Daily Practices in Automated Areas -- Introducing Flexibility into Data Centers for Smart Cities -- Automatic Validation for Crowd Simulation: Test Suite for a Pedestrian Simulator based on Different Scenarios -- A 2DOFvibrational Energy Harvester Exploiting Velocity Amplification: Modeling and Testing -- Voltage Control in Low Voltage Grids with Distributed Energy Resources: A Droop-based Approach -- A Sensitivity based Approach for Efficient PMU Deployment on Smart Grid -- Using Flexibility Information for Planning the Energy Demand of Households -- Laser Scanner and Camera Fusion for Automatic Obstacle Classification in ADAS Application -- Vehicle Routing to Minimizing Hybrid Fleet Fuel Consumption -- Service-Oriented Architecture for Cloud Application Development -- An Integrated Architecture for Simulation and Modeling of Small- and Medium-sized Transportation and Communication Networks -- Privacy Endangerment from Protocol Data Sets in VANETs and Countermeasures.

This book constitutes the thoroughly refereed proceedings of the 4th International Conference on Smart Cities and Green ICT Systems, SMARTGREENS 2015, and the 1st International Conference on Vehicle Technology and Intelligent Transport Systems, VEHITS 2015, held in Lisbon, Portugal, in May 2015. The 15 full papers of SMARTGREENS 2015 presented were carefully reviewed and selected from 73 submissions. VEHITS 2015 received 27 paper submissions from which 3 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.