ATO generated an interactive map for the Samoa that combines WorldPop 2025 population density with OpenStreetMap-derived strategic roads (motorways, primary, secondary, tertiary roads). The tool clips the population raster to the national boundary and maps the strategic road network and applies a 2 km buffer to visualize how much of the population lives within easy reach of these corridors.
Road, points of interest, and administrative boundary data in this application are derived from OpenStreetMap and are licensed under the Open Database License (ODbL). Users are free to copy, distribute, transmit, and adapt this data, provided that © OpenStreetMap contributors are credited and any derived database is shared under the same license. The OpenStreetMap-derived datasets used in this application are embedded directly in the HTML source of the page and may be obtained by saving or viewing the page source.
Routing and isochrone analyses are powered by OpenRouteService (ORS), © HeiGIT / Heidelberg University, and are based on OpenStreetMap data.
Population data are sourced from WorldPop (2025) and are licensed under Creative Commons Attribution 4.0 (CC BY 4.0).
This tool is provided for informational and analytical purposes only. While reasonable efforts have been made to ensure accuracy, the Asian Transport Observatory (ATO) makes no warranties regarding the completeness, accuracy, or suitability of the data or analyses for any specific purpose. The results should not be used as a substitute for official data, surveys, or engineering, planning, or investment decisions. ATO, nor its funders, accepts no responsibility for errors, omissions, or for any use made of the information presented.
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