Later republished in the Journal of Transport Statistics but without this, the prime author, included. A Delphi survey was undertaken with a selection of professionals in academic, government and consulting across the world. The objective was to identify the application areas where priorities should be placed, and the current status of the research and information tools needed to address them. For this reason both modelling and application experts were included. The shifts in priorities over the last five years, and the differences in view between the three sectors are presented. The attitudes towards a range of specific research and development directions were also assessed. .