- Ph.D. Northwestern University, 1973, Transportation Planning
- M.S. Northwestern University, 1967, Transportation Planning
- B.S. Duke University, 1966, Civil Engineering
Prof. Hartgen is a Professor in the Department of Geography and Earth Sciences. He is author of over 300 publications in transportation planning and policy, and is the US Editor of the international journal Transportation. His recent studies include comparative studies of highway and transit systems, impacts of electric and natural gas vehicles, economic impacts of transit and road proposals, economic impacts of airports, the motor sports industry, Charlotte traffic and transit service, site development, and commercial development at rural Interstate exits. His research regularly blends geographic principles, GIS, and spatial competition with transportation access and performance.