The fall of the Iron Curtain and the accession of Hungary to the EU have resulted in economic integration in the CENTROPE region. This integration causes a sharp increase of traffic volume. Therefore, it will become more and more important in the future to provide suitable infrastructure in public as well as motorized individual transport in order to be able to meet future traffic demand in an environmentally friendly and efficient manner. In order to make investment decisions, traffic models are increasingly being used to simulate the effects. Existing transport models are usually at the borders of political administrative units for administrative or cost reasons, but they are not able to adequately depict the effects of cross-border or cross-border infrastructure projects. This gap should be concluded within the framework of the submitted project for the border region AT-SK-HU.