The InterCor TESTFEST on Cross-border Interoperability started this Monday in Antwerp, Belgium. The event is hosted by the Flemish Ministry for Mobility and Public Works and will validate the international interoperability of the deployed Day 1 services. The twelve present international test teams from six countries (BE, FR, NL, UK, DE, CZ) are testing Day 1 services in pilot sites in the Flanders region in Belgium and the Netherlands. The fourth and final InterCor TESTFEST will conclude on Thursday 28 March with the “Connecting European corridors – C-ITS services across borders” conference including speeches by the Flemish Ministry, European Commission and industry representatives. InterCor partners will also use this opportunity to present the preliminary results of the project to the public.