Resumen
The article presents how the Weigh-in-Motion system can be used for managing Gdynia's freight traffic. Potential sites for weight pre-selection were identified in an analysis of the technical and location conditions. Situated directly in the east part of the Port of Gdynia a site was selected for a pilot implementation. Theoretical scenarios were simulated using an extended WIM system as a tool for controlling access to selected parts of the city. The results suggest that emissions can be reduced and traffic flows can be improved. The scenarios, however, are very general in character and should only be seen as an introduction into further and more detailed analyses to give a fuller understanding of the problem and the objectives of urban transport policy. In the Authors? opinion this work must be complemented with a verification of how the WIM can be introduced in Gdynia in formal and organisational terms. This should build on the experience from the CIVITAS ?Dyn@mo? project. A number of statutory changes are required to allow local authorities to make a full use of the potential of WIM systems.