Professor of Cities and Transportation, Massachusetts Institute of Technology

professeur titulaire, Polytechnique Montréal, CIRRELT

University of Minnesota

Department of Civil and Mineral Engineering, University of Toronto

Professor Emeritus of Civil Engineering (Transportation), University of Calgary

Associate Professor, Community and Regional Planning, The University of Texas at Austin

New York University

University of Washington

University of Utah

Director and Professor of Engineering, Northwestern College, Iowa, USA