Research work on public transportation, road safety, sustainable mobility and urban development and road safety. Currently professor of transportation and logistics in the Department of Industrial Engineering, Pontificia Universidad Javeriana in Bogotá, Colombia. More than 36 years of professional experience, including work with the National Planning Department, the City of Bogotá (Mayor´s Office), and Transmilenio S.A. (Bogotá´s transit agency); the World Resources Institute Ross Center for Sustainable Cities; Despacio.org (a local think tank in Bogotá); consulting work with multilateral and bilateral development agencies; and teaching as external lecturer at Universidad de los Andes, Universidad Externado de Colombia, and Universidad del Rosario (Bogotá, Colombia). Author of more than 150 research papers and academic presentations.