Abstract
A review is undertaken of progress in urban modeling in relation to six stated dimensions of model design and the range of disciplinary contributions which have been made. Particular attention is paid to the effect of recent developments, including the methods now available for dynamic modeling. The discussion of progress is related to the contribution of modeling to planning. The review provides the context for a discussion of priorities for research, ranging from a consideration of methods through particular subsystems to planning problems. Some concluding comments are made which include reference to the place of research in the research-development — application chain.