Weather and road condition warnings

Good driving starts with good preparation. Checking weather and road conditions before you set out can prevent accidents and save lives.

Important information sources

Source	What you find
yr.no	Weather forecast with precipitation, wind, and temperature
vegvesen.no / 175.no	Road conditions, road closures, escorted convoys
Norwegian Public Roads Administration app	Real-time information about road conditions
Variable signs	Current information along the road
Traffic radio (NRK P1)	Updates on traffic and road conditions
Webcams (vegvesen.no)	See actual conditions on mountain passes

Variable signs are electronic boards that display updated information about:

These signs have the same validity as regular traffic signs and are mandatory to follow.

Temperature: around zero degrees means changing road conditions and risk of ice.
Precipitation: rain, snow, or sleet affects both visibility and road grip.
Wind: strong wind is especially dangerous on open stretches and in the mountains.
Visibility: fog, snow showers, and heavy rain greatly reduce visibility. See fog driving and reduced visibility .

Hazard warning (yellow, orange, red) from the Meteorological Institute means the weather can become extreme.
With a red warning, you should consider postponing your trip.
Escorted convoy driving on mountain passes means you follow a snowplow in a convoy and cannot overtake.
Road closed means the road is impassable. Check for alternative routes.

Even if the weather forecast promised good weather, conditions can change quickly, especially in mountain terrain .

Keep an eye on variable signs and traffic reports.
Be ready to reduce speed if conditions worsen.
Always have equipment for various road conditions, especially in winter. See tire types and tire requirements .