Aspects and Ideas for the FMI-based Modeling of Railway Digital Twins

This papers reports on activities in the European projectMOTIONAL that aims at the development of a digital twinenvironment which facilities the modularity,interoperability and composability of complex digital twinassemblies of railway systems. The approach that refers tothe Functional Mock-up Interface is justified by adiscussion of the comparable activities in industry and inthe automotive field compared to particularities in therailway system. The work was initiated by the selection andanalysis of nine use cases. An introductory digital twinexample illustrates the current implementation status andrelated aspects, while an outlook presents the integrationinto the Federated Rail Data Space as the business case andas a vision of the activity.