Dr. Butt is an Associate Project Scientist working at the University of California Pavement Research Center, UC Davis. Currently, he is doing research and project managing number of federal and state funded sustainable transport infrastructures projects. Some of the projects include pavement structural responsiveness; development of transport infrastructures life cycle assessment (LCA) guidelines, frameworks and tools; development of LCA frameworks for complete streets and urban metabolism; and several others. He has been teaching several courses for last 15 years. Dr. Butt acquired BE degree in Civil Engineering from National University of Sciences and Technology (Pakistan) and, MSc and PhD from KTH Royal Institute of Technology (Sweden).