An application of an equilibrium trip assignment method to the 1970 road network of the City of Winnipeg, Manitoba, Canada is described. The validity of the method is discussed in detail. The results presented show that the differences between predicted and observed values of the relevant parameter are attributable in part to limitations of the model to explain all route choice behavior as a function of time alone and in part to the way in which observed temporal values relate to predictions made by a static model.