Abstract
The results are presented of a study in which mobility developments in the Netherlands between 1984 and 1989 have been monitored. Mobility is defined as personal travel in terms of kilometres. Monitoring means that average yearly changes are analyzed and explained. The method makes a comparison between the real developments and the results of predictions using the Mobility Explorer (in: Dutch: de Mobiliteitsverkenner), which is a flexible model for medium term forecasting in mobility. Several key explanatory factors are used in the Mobility Explorer: demographic developments, car ownership, employment figures, national income, personal income, fuel prices and public transport fares.