Sustainable and efficient transport solutions for the commercial vehicle industry make a decisive contribution to reducing global CO2 emissions. This is also the case with the "RekuTrAx" research project funded by the German Federal Ministry of Economics and Climate Protection (BMWK): The aim is to develop a demonstrator for a fully integrated, intelligent recuperation axle for truck trailers - and to prove that it can reduce the CO2 emissions of commercial vehicle fleets. As project sponsor, the German Aerospace Center is supporting the project. Four partners are implementing it together: