# Fog causes 992km of traffic jams in morning rush hour

> Dense fog also snarled up Tuesday's evening rush hour, closed rush-hour lanes on the A50 and led to a code yellow warning across the north of the Netherlands.

Society · published 2026-11-12 21:59 · https://nlnow.nl/a/fog-causes-992km-of-jams-in-year-s-busiest-morning-rush/

Dense fog gave the Netherlands its busiest morning rush hour of the year so far on Tuesday. Around 07.55, there were 992 kilometres of traffic jams, the ANWB said. The evening rush hour was also heavy: by 17.15 there were already about 150 jams with a combined length of more than 800 kilometres.

The fog was thickest in the north, where visibility was down to just 50 to 200 metres in many places. The KNMI, the weather institute, issued code yellow for fog for large parts of Drenthe, Groningen and Friesland, and for parts of Overijssel and Noord-Holland.

On the A50 between the Beekbergen and Waterberg junctions near Apeldoorn, the rush-hour lanes were closed. Rijkswaterstaat, the national roads agency, said: "Because of the fog the lanes cannot be properly inspected, and that can create dangerous situations."

> 🚗🚗 | The morning rush hour is unfolding as usual, few incidents and virtually no traffic jams. You will experience the most delay on the #A12 near the Galecopper bridge near Utrecht coming from The Hague, 10 minutes. You can find the traffic jam overview 24/7 at
> — Rijkswaterstaat, national roads agency, on X (https://x.com/RWSverkeersinfo/status/2121133687357997127) (translated from Dutch)

On the A1 between the Hoevelaken and Stroe junctions, drivers faced a delay of almost an hour. Several flights were cancelled or delayed because of the fog.

## Background

- **ANWB (Algemene Nederlandsche Wielrijders-Bond)**: The Dutch motoring and cycling association. It offers roadside assistance, travel services and insurance, tests products such as child car seats, and speaks for road users.
- **KNMI (Koninklijk Nederlands Meteorologisch Instituut)**: The KNMI is the Royal Netherlands Meteorological Institute, the national weather service. It monitors weather, climate and seismic activity in the Netherlands, and it issues the official weather warnings, such as fog, storm or ice warnings, that local governments, road authorities and the public rely on.
- **code geel**: Code yellow is the mildest of the three weather warning levels issued by the KNMI, the others being code orange and code red. It means the weather may cause some disruption, such as reduced visibility from fog, and people are advised to take care and follow local guidance. It is a warning, not a closure order.
- **Rijkswaterstaat**: Rijkswaterstaat is the Dutch national government agency responsible for the main national motorways, the major waterways and the national water system. It builds, manages, maintains and inspects these roads and water works, and it also manages traffic on the motorways, including closing lanes when conditions are unsafe.

From NLnow, news from the Netherlands in English. How stories are made: https://nlnow.nl/about/