The data sampled within a large FCD-project with taxi drivers can be used to check the route-choice habits of a community of fairly well-informed people. Not surprisingly, the drivers do not always choose the fastest route, although there are changes in the route-choice under varying traffic loads. To understand, however, the motivations into more detail leading to a particular route choice appears to be far from trivial. Some experiences with this unique data set, that is publicly available, will be reported in this contribution
