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Reduced Visibility

Darkness, fog, smoke and dust – there are many situations where visibility is impaired. When you are visible and can see well, the number of accidents is reduced. Accidents that are often serious and could even lead to death. Even if you think you're visible, those around you might not agree.

Using the right equipment at the right time makes working days, and nights, much safer. Being seen and seeing well are not only important, they're vital.

Active protection against reduced visibility

Tips to make sure you’re visible:

Wear the right clothes
Make sure that everyone who works where visibility may be reduced wears the correct high-visibility garments, i.e. workwear with fluorescent fabrics and reflectors.

The right lighting
In cases where it is possible to control the lighting, it must be well-planned, appropriate and functioning.

Clear markings
Clear separation between pedestrians and vehicular traffic makes the workplace safer.

Alert others in the vicinity
Use flashing warning lights and signs to prevent accidents.

What are the risks of working in dark areas/locations?

There is an increased risk of accidents during all activities when visibility is poor or you are not easily visible.


Being struck by a vehicle and collisions between vehicles are examples of common accidents. Other examples include falls, cuts and crushing injuries.

How to protect yourself when working in reduced visibility.

Use the right lighting for the purpose (illuminated work area) and make people more visible. This is done by using the correct personal protective equipment, headlamp, flashlight, reflectors, etc.


It is important to use both the right lighting and the right personal protective equipment to ensure safety in the workplace.  


All high-visibility garments must be certified in accordance with EN-20471.

Different visibility classifications

There are three different visibility classifications: Class 1, Class 2 and Class 3. Class 3 is the highest class with the most fluorescent (e.g. neon yellow or orange color) fabric surface.


NOTE! Visibility Class 2 is the highest classification for trousers. 

What does the law say?

The employer is responsible for informing employees about which class applies in the workplace based on a risk assessment.

Other risk areas

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