Open Dataset on Intermodal Accessibility in Germany: Isochrone-Based Metrics for Public Transport Stops

This dataset provides isochrone-based accessibility metrics for all timetable-based public transport stops in Germany.It was developed in the project "REACH-IT – Scalable Accessibility Analysis in Intermodal Transport Using Open Data", funded by the German Federal Ministry for Digital and Transport (mFUND, FKZ 19F1175A). The dataset is based on the nationwide DELFI timetable data (CC-BY) and contains for each stop the accessible areas within 30, 60, and 120 minutes, stored as metrics in a property graph model. Both local and long-distance connections are included. The dataset supports a neutral, data-driven evaluation of transport connectivity and can be used in research, planning, and policy contexts. Possible applications include: Identifying underserved regions and intermodal potential Evaluating infrastructure measures and location attractiveness Supporting multimodal mobility models, simulations, and what-if analyses Providing open, FAIR data for science, innovation, and Smart City concepts The dataset is documented in detail and follows the FAIR principles (Findable, Accessible, Interoperable, Reusable).