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HeiGIT generated these AI-derived road surface, width, and passability metrics for San Marino's arterial road network using 2020 and 2024 PlanetScope satellite imagery. It integrates OpenStreetMap (OSM) segments with deep-learning predictions to provide consistent coverage of motorway, trunk, primary, and secondary roads. The analysis fills gaps in OSM surface tags with a model accuracy of 89.2%.
Data is provided in GEOJSON and GEOPACKAGE formats; methodology is detailed in ArXiv paper 2512.04092.