The aim of this paper is to formulate and test a microlevel simulation model of pedestrian route choice and allocation behaviour within city centres. The model is developed to predict the likely effect of transportation plans and retail planning measures on pedestrian behaviour and hence on the profitability of shopping streets. The model captures the main characteristics of pedestrian behaviour as found so far in empirical studies. The model is tested in the city of Maastricht. The results indicate that the model gives a satisfactory description of pedestrian route choice and allocation behaviour. The paper is concluded by discussing some potential improvements of the model.