Singapore Land Authority national map sharing data in this collection provides major polyline features for basemap production across Singapore. Member datasets National Map Line are published in GEOJSON and KML, covering expressways, major roads, international boundaries, and contour lines as described officially. GIS vendors and government agencies can harmonise line geometry for cross-agency map products. The annual catalogue release focuses on feature linework rather than attribution of traffic conditions.
This dataset contains major features for national map data sharing that are represented in polyline form. Data includes road data like expressway, major roads, international boundary and contour lines.
Singapore Land Authority GeoJSON of major national-map polyline features for shared mapping, including expressways, major roads, international boundaries, and contour lines. Cartographers, transport analysts, and GIS developers use the layer as a national basemap skeleton alongside other SLA national-map datasets.