A.T. Papagiannakis, PhD, P.E., F.ASCE, is a Professor of Civil Engineering in the School of Civil and Environmental Engineering & Construction Management at the University of Texas at San Antonio. He is the founder and past chair of the Pavements Committee of the Geo-Institute. Eyad Masad, PhD, P.E., Dist. M. ASCE, is a Professor of Civil Engineering in the Zachry Department of Civil and Environmental Engineering at Texas A&M University and the Mechanical Engineering Program of Texas A&M at Qatar. Both authors have extensive experiences in teaching, research, professional training, and consultancy in pavement engineering.