Transport systems in Central Europe often show a lack of integration between different transport networks and modes. Linking the Trans-European Network to the regional passenger transport system is a challenge, linking both to flexible mobility services such as sharing services, on demand transport etc. on a local level, is an even bigger one. However, the potential of a successful integration with regard to improved service quality, increased accessibility and sustainability is high. The paper will outline the basic concept of Living Labs and its usability for the improvement of local, regional and transnational transport systems. The Living Lab approach will help take into account the mobility needs of different user groups when developing new services or adapting existing ones and will support these services to become more competitive and financially viable. In the Interreg-project SHAREPLACE six Living Lab sites in Austria, Croatia, Germany, Italy and Hungary will be implemented.