dr. ir. Barry Zondag

managing director

T: +31 70 312 1548


Barry Zondag is Managing Director of Significance. He holds a PhD in Civil Engineering from Delft University and has extensive experience in passenger- and freight transport forecasting and planning, land-use modelling and policy analysis. He has worked in applied transport and land use research for Hague Consulting Group, RAND Europe, Delft University of Technology and Netherlands Environmental Assessment Agency PBL. His main areas of interest are integrative land-use and transport modelling, ports and freight modelling, multi-sector scenario development, accessibility evaluation, cost benefit analysis and management of large scale models. He is the principal developer of the TIGRIS XL model, a land-use and transport model for the Netherlands. He has also substantial international experience and participated in studies for Europe, Black Sea region, Mediterranean region, Thailand and Indonesia.