David McCollum is currently a Ph.D. Candidate in Transportation Technology and Policy and a graduate researcher in the Sustainable Transportation Energy Pathways (STEPS) program at the University of California, Davis, Institute of Transportation Studies. David graduated from the University of Tennessee in 2004 with a B.S. in chemical engineering, and in 2007-08 he received M.S. degrees in both Transportation Technology and Policy and Agricultural and Resource Economics from UC Davis. His main research interests include energy and climate systems modeling, scenario and policy analysis, and technology assessment.
Gregory Gould is currently a doctoral candidate and research assistant in the Department of Civil and Environmental Engineering at the University of California Davis and a member of the UC Davis Institute of Transportation Studies. For his dissertation, Greg is developing a new GIS based locomotive emission model for the California Air Resources Board and also evaluating the methods used by transportation planning agencies to model the impacts of goods movement projects. In addition to his work on goods movement, Greg has recently published research on bicycle traffic modeling and a household level greenhouse gas trading scheme. Prior to studying at UC Davis Greg received a MS in Resource Economics and Policy and a BS in Chemical Engineering from the University of Maine.
A Corporate Fellow of Oak Ridge National Laboratory, David Greene has spent 30 years researching transportation and energy policy issues for the U.S. government. His research interests include analysis of policies to mitigate greenhouse gas emissions from transportation, energy and transportation demand modeling, economic analysis of petroleum dependence, and understanding market responses to advanced transportation technologies and alternative fuels. Dr. Greene earned a B.A. degree from Columbia University in 1971, an M.A. from the University of Oregon in 1973, and a Ph.D. in Geography and Environmental Engineering from The Johns Hopkins University in 1978. He has published over one hundred fifty articles, which have appeared in various professional journals, books, and technical reports. In recognition of his service to the National Academy of Science and National Research Council, Dr. Greene has been designated a lifetime National Associate of the National Academies.