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vii ACKNOWLEDGEMENTS The research reported herein was performed under NCHRP Project 20-50 (10/16), LTPP Data Analysis: Influence of Design and Construction Features on the Response and Performance of New Flexible and Rigid Pavements, by the Department of Civil and Environmental Engineering at Michigan State University. Karim Chatti, Associate Professor of Civil and Environmental Engineering, was the Principal Investigator. Neeraj Buch, Associate Professor of Civil and Environmental Engineering, was the Co-Principal Investigator. They were assisted by Syed Waqar Haider, Aswani S. Pulipaka, Graduate Research Assistants, and Praveen Desaraju, former Graduate Research Assistant, now Staff Engineer at Applied Research Associates Inc. Richard W. Lyles, Professor of Civil and Environmental Engineering, and Dennis Gilliland, Professor of Statistics and Probability, assisted in the data analyses aspects. The LTPP customer support services assisted the research team by providing data updates, research documents as well as detailed data outside DataPave. In particular, the help provided by Mr. John Rush is appreciated.