Abstract
The necessary integration of private and public transport results in a hierarchical set-up of public transport systems. Such a hierarchical set-up of a public transport system leads to many social benefits, not in the least in the area of control of costs. Apparently passengers do not benefit from the hierarchical set-up because they will have to change more times. However, after a closer look it can be learned that other elements of a trip will be of a better quality in such way that the negative element will disappear and the change can even have a positive influence on the quality of the total trip.(a) for the covering abstract of the conference see IRRD 272679.