A Norwegian real-time map of traffic on land, at sea and in the air
Kartradar shows traffic in Norway as it happens: planes and helicopters in the air, ships along the coast, buses, trams, ferries and trains on their way between stops, traffic cameras and road incidents, and a few other things that move or change from minute to minute.
The map also covers neighbouring countries. From Sweden and Finland it shows all trains, road cameras and a large share of public transport, and from Sweden also road reports about accidents, roadworks and road closures. From the Netherlands it shows buses and other public transport. Under “Layers” in the menu you can switch each country on and off.
The service is built and run by one person, with no company behind it. That means short decision paths and quick changes, but also that there is no round-the-clock staff if something stops working.
What is different here
There are good, specialised services for each mode of transport: Flightradar24 for planes, MarineTraffic for ships, the travel apps for public transport. Kartradar does not try to beat any of them in their own field. The point is to gather everything that moves in the same Norwegian map view, so the connections become visible: the ferry waiting for the bus, the helicopter on its way out to the platform, the crane truck stuck in the queue a traffic camera just showed.
The other thing that stands out is openness about the data. Every source is listed with its name, licence and update rate on the sources page, and when something is missing from the map, we try to explain why instead of leaving it blank. The guides are written for the same reason: they explain what the numbers actually mean, and what they do not mean.
Where the data comes from
Everything on the map comes from open, public sources or from services that share data freely. The most important are Entur for public transport, adsb.lol for aircraft, aisstream.io and BarentsWatch for ships, the Norwegian Public Roads Administration for road traffic, cameras and incidents, Avinor for airports and the Norwegian Meteorological Institute for weather warnings. For the neighbouring countries, the data comes from Trafikverket in Sweden, Fintraffic (Digitraffic) in Finland and the regional public transport operators' open real-time data in Sweden, Finland and the Netherlands. Nothing is scraped from other map services, and no data is bought from data brokers.
Kartradar collects and displays this data, but does not own it. Errors in the underlying data carry through to the map. If you see something that is obviously wrong, it is usually the source that is wrong, not the map — but it is still worth reporting, via the chat on the map page.
What the map must not be used for
Kartradar is an information map, not a tool for safety-critical decisions. It must not be used for maritime or air navigation, for flying, for planning heavy transport without checking the Public Roads Administration's own road lists, or for anything else where errors could cause harm. Positions may be delayed, inaccurate or missing entirely. Some categories, such as military aircraft and many smaller vessels, simply do not broadcast their position.
The driving route you can request in the menu is one thing worth being clear about. It draws a suggested route on the map, with estimated length and driving time — it is not turn-by-turn guidance while you drive, and must not be used as such. The driving time is based on the speed limits in the map data, not on current traffic, so queues, accidents, closed roads and road conditions are not included. The route may also suggest roads that are closed, seasonal or unsuitable for your vehicle. Always check road signs and the Public Roads Administration's traffic messages before you drive.
Where the map draws an estimated position instead of a measured one, this is stated. Between two updates, the symbols glide smoothly along their course so the movement does not stutter. That is visual smoothing, not new information.
Who is behind it
Kartradar is developed and run by Asle S. in Melhus, Trøndelag, alongside other work. It is not a company, not a team and not a funded project — just someone who finds it interesting to see what is actually moving in Norway right now, and who built the tool for it.
That explains both the strength and the weakness of the service. New sources and improvements arrive quickly, because there is no distance between idea and execution. At the same time, there is no on-call phone, and if something breaks on a Sunday evening, it may stay broken until there is time to fix it.
Bug reports, suggestions and questions are welcome at dinutvikler@gmail.com or in the chat on the map. See the contact page for what is useful to include.
Running costs
Running Kartradar costs money: servers, API access, the domain and maintenance, every single month. The map is therefore funded by its users. You get a 10-minute free trial, after which the map requires a subscription of 49 NOK per month or 490 NOK per year, or a one-time purchase of 799 NOK. Payments are handled by Stripe. The subscription can be cancelled at any time.
The subpages, such as this one, the guides and the list of sources, are always free. The money goes to running and further developing the map. Thank you to everyone who subscribes and makes it possible to keep it going.
The terms of use are in the terms of use, and what personal data is processed is described in the privacy policy (both in Norwegian; English versions are available on the map under "Privacy and terms" at the bottom of the menu).