Isochrone This TatukGIS hosted online service provides worldwide isochrone calculations on an OpenStreetMap dataset. The service is accessible on stand-alone basis using a straightforward Developer Kernel API (TGIS_OSMIsochrone class), without need for local geocoding/routing resources that use the more elaborate and multi-functional DK gecoding/routing API designed for client-side calculations. Learn more by visiting the OnlineServices sample. Areas reachable by car within a time limit starting from a given address. The isochrone result is returned as a vector layer containing a set of polygon shapes, each representing successive time intervals up to the specified time limit. As with other TatukGIS hosted online services, the OSM isochrone service is available free of charge on a best-efforts basis for reasonable use by TatukGIS customers with active license maintenance. Geocoding Routing Isochrone