1. John Harvey is a Professor at the Department of Civil and Environmental Engineering at the University of California, Davis, USA. His research focusses on pavement engineering, including materials, construction, design, management, life cycle cost and environmental life cycle assessment 2. Professor Imad L. Al-Qadi, Bliss Professor of Engineering, is the Director of the Advanced Transportation Research and Engineering Laboratory (ATREL), the Illinois Center for Transportation (ICT), and the Smart Transportation Infrastructure Initiative (STII) at the University of Illinois at Urbana-Champaign (UIUC). Al-Qadi is also President of the Transportation Engineering Solutions and Technologies, Inc. He served as an instructor and research engineer at Penn State University from 1988 to 1990 and was a member of the faculty of the Charles E. Via Jr. Department of Civil and Environmental Engineering at Virginia Tech from 1990 to 2004. By 1998, he had been promoted to full professor, and by 2002, he was named the Charles E. Via Jr. Professor of Civil and Environmental Engineering. Al-Qadi holds a B.S. (1984) from Yarmouk University and M.Eng. (1986) and Ph.D. (1990) degrees from Penn State University, all in civil engineering. A registered professional engineer, Al-Qadi is an elected Distinguished Member of the American Society of Civil Engineers (ASCE), Chapter Honor Member of Chi Epsilon, the Civil Engineering Honor Society, honorary member of the Societa Italiana Infrastrutture Viarie, emeritus member of TRB Committee AHD25 on Sealants and Fillers for Joints and Cracks, and an honorary professor at Southeast University in Nanjing, Chang ¿An University in Xian, and Tongi University in Shanghai, China; Aston University, UK; and KTH Royal Institute of Technology in Stockholm, Sweden, as well as an honorary chair professor at Harbin Institute of Technology, China. He is the Editor-in-Chief of the International Journal of Pavement Engineering, Associate Editor of the Research in Nondestructive Evaluation Journal, past Regional Editor of the Construction and Building Materials Journal, and Guest Editor of ASNT Materials special edition on Nondestructive Evaluation of Pavements. He also serves on the editorial boards of several other journals. Al-Qadi is the only pavement engineer to ever receive the National Science Foundation Young Investigator Award (1994) and the Quadrennial International Geosynthetic Society Award (2002). He received numerous prestigious awards including the ASCE James Laurie Prize (2007), ARTBA S.S. Steinberg Award (2013), ASCE Turner Award (2014), TRR of the National Academies D. Grant Mickle Award (2006), Limoges Medal of Merit (2004), STS Research Award (1993), Virginia Tech College of Engineering Dean¿s Award for Research Excellence (2001), ASCE Outstanding Instructor Award (2006), Illinois Center for Transportation Research Award (2012, 2015), Engineering Council Award for Excellence in Advising (2010), as well as several best paper awards. His achievements were profiled in the TRNews of the National Academies in the November-December 2006 issue. Al-Qadi is the past President of the Board of Governors of the ASCE Transportation and Development Institute. He also served as Group Leader of ISAP Technical Committee on Interlayer Systems, a member of the USDOT Truck Size and Weight Study National Committee, and as a member of the TRB Operation and Maintenance Group. He is the past chair of TRB Preservation and Maintenance Section; TRB Subcommittee on Interlayer Systems to Control Reflective Cracking (founder); TRB Committee AHD25 on Sealants and Fillers for Joints and Cracks; TRB Subcommittee AFS70-2 on Geosynthetics in Flexible Pavement Systems (founder); ASCE Highway Pavement Committee; and ASCE Design, Construction, and Maintenance Executive Council. His service record also includes the role of chair/co-chair of many international conferences, such as the 5th, 6th, and 7th RILEM International Conference on Pavement Cracking; 2006 International NDE Conference on Civil Engineering; Advanced Characterization of Pavement and Soil Engineering Materials; 2006, 2010, 2013, 2017, and 2019 International Airfield and Highway Pavement Conferences; and the First ASCE Transportation and Development Institute Congress. Al-Qadi is a member of several technical committees and a member of the State Transportation Innovation Leadership Team-Illinois. He is an emeritus of the Transportation Research Board (TRB) and a member of the Association of Asphalt Paving Technologists (AAPT), North American Geosynthetic Society (NAGS), International Society of Asphalt Pavements (ISAP), International Geosynthetic Society (IGS), American Society of Nondestructive Testing (ASNT), International Association of Computer Methods and Advances in Geomechanics (IACMAG), and the American Society for Testing and Materials (ASTM). Al-Qadi¿s scholarly record features 600+ authored/co-authored publications, more than 350 of which are fully refereed papers (250 in periodic journals). His research resulted in the development of new tests, testing specifications, advanced modeling and simulation of pavement loading, pavement layer interface and crack development, and analysis of radar electromagnetic wave interactions with civil engineering materials, roads, and bridges. Al-Qadi presented the outcome of his research at 600+ national and international conferences and international meetings, including numerous invited keynote and distinguished lectures. He has served as principal investigator of 120+ projects, with funding in excess of $100 million, sponsored by various federal, state, and international agencies and industry. He has also managed more than 230 projects sponsored by ICT. Al-Qadi has consulted for numerous federal, state, and major public agencies in the U.S. and abroad, including the Federal Highway Administration (FHWA), BP Amoco, Michelin, Bekaert, Maccaferri, DMJM+HARRIS, ARAMCO, and Koch. 3. Hasan Ozer is an associate professor in the School of Sustainable Engineering and the Built Environment at the Arizona State University, Tempe, USA. His research focuses on pavement materials characterization, pavement design and analysis, and development of rehabilitation and preservation programs. Ozer develops computational mechanics methods for structural performance modeling of pavements and uses life-cycle assessment tools for advancing sustainable transportation infrastructure. 4. Gerardo Flintsch is currently working at the Virginia Polytechnic Institute and State University, Blacksburg, USA, as a director of the Center for Sustainable Transportation Infrastructureat the Virginia Tech Transportation Institute.
