In this paper a new perspective in traffic control using vehicular traffic data sources and the relevant evaluation methodology are presented. This study was performed in the Piedmont Regional Traffic Supervisor (SVR) project context: the SVR was developed by 5T company with the main aim of traffic monitoring, forecast and control, over all the Piedmont Region road network. This is a radical evolution of the concept: the extension and the different typology of the controlled area require some specific technical choices that are described in the paper. Besides, the wideness of the controlled area requires also an integration of classic physical sensors with new vehicular sensors (Floating Car Data – FCD): details about real-time data acquisition and treatment, as well as about KPI identification and estimation will be provided.