Dr. Dionyz Gasparovsky is Division Director of the International Commission on Illumination (CIE) responsible for transportation and exterior applications. As associate professor at the Slovak University of Technology in Bratislava he is lecturer, researcher and supervisor to PhD students for the problems of lighting technology. Focus of his professional interest cover road lighting, home lighting, energy performance of lighting systems and other lighting applications. Technical experience with auditing, designing and measurement of lighting systems. Author or co-author of tens of peer reviewed publications. In CIE Dr. Gasparovsky chairs the technical committee on maintenance of lighting systems and contributes to the work of many other technical committees. Active also in standardization committees on light and lighting – CEN/TC169 and ISO/TC274.