Lars-Göran Mattsson is Professor Emeritus of Transport Systems Analysis at KTH Royal Institute of Technology, Stockholm. He finished his M.Sc. in Engineering Physics at KTH in 1972 and received his Ph.D. in Optimisation there in 1987. After working for the Office of Regional Planning and Urban Transportation, County of Stockholm, he returned back to KTH as Associate Professor (Docent) of Regional Planning in 1991. He held positions as Acting Professor and Head of the Division of Transport and Traffic Planning, 1995-97, and Acting Professor of Transport Systems Analysis from 1998 until he was appointed Professor in 1999. His research interests comprise both theoretical and applied work related to transport and location analysis. In particular, he is interested in integrated land use and transport models, travel demand models, location models, infrastructure and regional development, vulnerability analysis, applied systems analysis, road pricing, random utility theory, discrete choice and economic theory.