Behind the map
Data sources and coverage
Open data brings Kartheim to life. Here you can see where the map, the transport and the weather come from, and what the data can tell you.
Geographic coverage
The base map covers Norway and can be explored further across the whole world. The transport layers have varying coverage and do not guarantee that every vehicle or vessel is shown.
- Base map and terrain
- All of Norway, with free navigation across the rest of the world.
- Buses
- Norwegian map areas where operators provide data to Entur.
- Other public transport and trains
- Configured areas around Trondheim, Oslo, Bergen, Stavanger, Tromsø, depending on transport type and source.
- Vessels
- Norwegian map areas with available AIS data.
- Road traffic
- Norwegian map areas with counting points and available hourly volume.
- Weather
- Forecast at the centre of the map where MET has data.
The status in the map layers menu shows whether data is loading, up to date, stale or missing.
Map and terrain
Base map: OpenFreeMap with OpenMapTiles and © OpenStreetMap contributors. Elevation data: © Mapterhorn. The roofs of the detailed buildings in Kongsberg are made from lidar data: © Kartverket (CC BY 4.0). Credits for the 3D models are listed below.
Pine tree by Poly by Google [CC-BY] (https://creativecommons.org/licenses/by/3.0/) via Poly Pizza (https://poly.pizza/m/7rTNpk6j01O)
Buses and other public transport
Buses come directly from Entur (open data under NLOD). Routes and stop times come from Entur’s Journey Planner. The bus position shown may be estimated along the route from GPS and stop times. Without a valid route, the bus stays at its last measured position.
Trams, fast ferries and Entur trains come directly from Entur (NLOD). Journey Planner provides route geometry, ordered stops and separate scheduled, expected and actual times. These views are configured for Trondheim, Oslo, Bergen, Stavanger, Tromsø where the transport type exists. Coverage depends on operator data.
Trains
Bane NOR’s open SIRI API supplies timetables and passings under NLOD. Train positions may be estimated from times and the rail network; they are then not GPS positions. Scheduled times alone do not confirm a passing. The train view is limited to configured transport areas.
Aircraft
Aircraft positions come directly from adsb.lol (ODbL). airplanes.live is the fallback, and adsb.fi can be enabled as an additional fallback. Attribution follows the source that provided the data. Positions are based on ADS-B and may be delayed or missing.
Vessels
AIS comes from Allemannsdata / BarentsWatch in Norwegian map areas. Small fishing vessels and most leisure and sailing boats are missing. Position and movement are based on the most recently received AIS data.
Road traffic
Counting points and traffic volume come directly from the Norwegian Public Roads Administration’s open Traffic Data API under NLOD. Traffic messages still come from Allemannsdata / the Norwegian Public Roads Administration. Volume covers one hour and normally becomes available two to three hours later. The 3D cars are an illustration, not observed car positions, measured queues, speed or travel time. On roads without measurements, the number of cars may be estimated from road type and time of day.
Weather
Weather at the centre of the map comes from the Norwegian Meteorological Institute. The card shows the available forecast and update time. The weather on the map visualises the forecast.
Events
Eliteserien, OBOS-ligaen and Toppserien matches come from TheSportsDB, and concerts and other events from Ticketmaster. Local events come from the municipalities' open calendars: Trondheim, Stjørdal and Malvik from HvaSkjerKalender, and 22 municipalities, including Stavanger, Kristiansand, Drammen and Ålesund, from the public event pages on Friskus. Kongsberg comes from the programme of Kongsberg Musikkteater. Venues without coordinates are placed using the Norwegian Mapping Authority's address register. The map shows the next eight days. Times are scheduled start times from the organiser; status and scores are shown only when the source reports them. Elsewhere, events not sold through Ticketmaster are missing.
Places to explore
The place links are shortcuts to city centres, regions and sights in the map. For information about visiting and journey planning, see Visit Norway and the place’s official information.
Data sources and coverage reviewed on .