Uday Kumar is professor of operation and maintenance engineering, director of Luleå Railway Research Center and scientific director of the Strategic Area of Research and Innovation—Sustainable Transport at Luleå University of Technology, Luleå, Sweden. Before joining Luleå University of Technology, Dr. Kumar was professor of Offshore Technology (Operation and Maintenance Engineering) at Stavanger University, Norway. Dr. Kumar has research interests in the subject area of reliability and maintainability engineering, maintenance modeling, condition monitoring, LCC and risk analysis, etc. He has published more than 300 papers in international jour- nals and peer-reviewed conferences and has made contributions to many edited books. He has supervised more than 25 PhD theses related to the area of reliability and maintenance. Dr. Kumar has been a keynote and invited speaker at numerous congresses, conferences, seminars, industrial forums, workshops, and academic institutions. He is an elected member of the Swedish Royal Academy of Engineering Sciences.