He has conducted research for several years at the Transportation Sustainability Research Center at UC Berkeley and was the founding Director of Statistical Consulting Services at the Center for Statistical and Information Science at Temple University. His areas of expertise and research are in Sustainable Transportation generally and specifically in Intelligent Transportation Systems, Asset Management, Rail Transit, Alternative Fuels in Freight Rail, Alternative Drive Trains for Automobile and Trucks, Economic Evaluation of Systems, Life-cycle Assessment, Transportation Mode Choice Models, Air Quality, Transportation Energy and Emissions, and Transportation Ecology.