The objective of HyTruck is to support public authorities in steering the development of a transnational network of GREEN hydrogen refuelling stations (HRS) suited for large trucks. This shall help to overcome the “chicken & egg problem” that SMEs and infrastructure providers are facing: Haulage and logistics companies that maintain large fleets of heavy vehicles are willing to invest in fuel cell trucks to decarbonize their fleets. The prerequisite for a fuel cell truck to be able to travel from Poznan to Tartu (and back) is that it can refuel with H2 on the way – but today virtually no HRS for large trucks exist. The developers of HRS are prepared to invest in the development of a network of filling stations. The prerequisite is that there are enough fuel cell vehicles that demand green H2 as alternative fuel – but today there are hardly any fuel cell trucks on the road. The EU Regulation AFIR requires member states to take action and plan HRS in parallel to the ramp-up of H2 technology in the transportation sector. The build-up of a transnational HRS network is a complex process with a spatial, economic, environmental and technological dimension. HyTruck is developing solutions that equip public authorities with the capacity and tools to elaborate spatial development concepts, provide the regulatory framework, ensure common standards and design public co-funding programmes. Ultimately HyTruck works towards zero – emission in international road freight transport in the BSR.