A Dataset of Healthcare Road Accessibility in Australia: Service-Based Grouping and Residential Reachability

This dataset provides national coverage of healthcare road accessibility in Australia, focusing on access to hospitals and ambulance stations. Hospitals are classified into four groups based on the number of clinical services they offer: Blue (>16 services), Green (11–15), Orange (5–10), and Red (Road accessibility is calculated using time-based Network Voronoi Diagram across OpenStreetMap road networks. Estimated travel times are adjusted based on road speed limits and regional driving conditions (urban, regional, or remote). Two accessibility layers are provided: (1) a comprehensive set of road nodes showing distance (in kilometres) and travel time (in hours) to the nearest hospital in each group, and (2) a set of sampled residential address points, representing population perspectives, with linked nearest-hospital metrics for each group. Travel time accuracy was validated against Google Maps API, with average discrepancies of 3 minutes in urban areas, 10 minutes in regional areas, and 90 minutes in remote areas. Summary statistics are also available at the Local Government Area (LGA), Statistical Area Level 2 (SA2), and remoteness levels, allowing high-level regional comparisons. The dataset includes vector-based geospatial files representing hospitals, ambulance stations, road nodes, and residential samples. All layers use the GDA2020 datum (EPSG:7844) and are derived from the Australian Institute of Health and Welfare (hospital services), Digital Atlas Australia (ambulance locations), OpenStreetMap (road networks), Australian Bureau of Statistics (boundaries), and Geoscape G-NAF (residential addresses).This dataset has interactive data visualisations applications to support transparency and practical exploration of the dataset which can be accessed at https://kiki-maulana.github.io/road_accessibility/