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Approximately 79,300 km of Thailand's arterial road network are mapped with AI-derived surface and width attributes produced by HeiGIT from 2020 and 2024 PlanetScope imagery. This resource provides surface predictions for 41,200 km of roads that currently lack surface tags in OpenStreetMap.
Data is provided in GeoJSON and GeoPackage formats; users should consult the associated arXiv paper (2512.04092) for specific model confidence and methodology details.