Safety advice in case of fog

In the event of fog, visibility is reduced. Often you can no longer orient yourself using the usual landmarks (trees, beacons, etc.). At the same time, you lose your sense of speed: you risk driving faster than you think, seeing an obstacle too late (slow vehicle, broken down vehicle...) or not being seen in time by another road user.

It is therefore important to adapt your speed according to the visibility.

Use of fog lights

In fog or any similar situation reducing visibility to less than 100 metres, the dipped-beam headlights must be used instead of the main-beam headlights. The dipped-beam headlights may be replaced or supplemented by the front fog lights.

The front fog lamps must only be used simultaneously with the rear lamps and without the main-beam headlamps being switched on at the same time.

Rear fog lamps must only be used in dense fog reducing visibility to less than 50 m and simultaneously with the rear lamps.

Automatic activation of lights

Many road users use automatic lights. However, this can cause safety problems depending on the weather conditions.

For example, the lights have to be activated manually in foggy conditions. The majority of automatic lighting systems do not yet offer automatic activation in this case.

Even at dawn, in rain or snow (daytime), the lighting is not necessarily activated by the automated system, which therefore constitutes a safety risk.

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