ARTICOLI 27 en/ ) regarding Human Centric Lighting; and the last one by Pars Mukish (http:// www.yole.fr/ ), the state of art of OLED. The consequentiality was given by a constant solutions research that may lead to sustainability, smart functionality and diffused wellbeing. Regarding OLED systems, during the third day there was a study workshop, concerning the OLED for Automotive lighting. Practical applications, in the present and in the future, from the organic sources. The R&D Automotive division is and will be the sector that, in the next five years, may have the most important investments, in technical evolution and rendition and construction structure, from OLED sheet to 3D pleats, that will bent the auto body and next generation car interiors. Josep Carreras and Günther Leising speeches demonstrate and defined some important and crucial aspects of the circadian lighting regulation, urban or not, as wellbeing and energy saving source in the medium and long term. The Spanish speaker introduces some case study, related to human physiological and psychological wellbeing, energy saving and driving conditions improving, in all traffic peaks. Smart lighting is not only lighting, it regards data transmission, tele-control and street safety, thanks to the new technology LED sources and sensors, it finds full implementation in the next future streets. LpS 2015 was a symposium that has established the LED technology state of art, there were three meeting and study days useful to face, deepen and define the LED revolution tracks. There were very articulated and binding meetings, which allow us to comprehend how much complexity is contained in the smaller lighting object, how many problems (and their solutions) are in a few squared millimeters. Quality, dispersions, reliability and durability were the keywords that must be solved to reach highest efficiency performance in SSL sources.