SunlightBelgium
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232. Sunlight
Sunlight can reduce visibility when the sun is low in the sky or when bright light reflects from wet roads, snow, buildings or other vehicles. Sun glare can make traffic lights, signs, pedestrians and other road users difficult to see. Drivers should reduce speed when necessary, keep the windscreen clean, use the sun visor or suitable sunglasses and leave extra space to react to hazards that may be temporarily hidden by glare.
Wikimedia.org • Frank Contreras Cardenas • CC BY-SA
Do you have to reduce your speed when sunlight reduces visibility in Belgium?
Yes. Belgian traffic rules require drivers to adapt their speed to visibility, weather, road conditions and traffic. Strong sun glare can therefore require a lower speed even when the posted speed limit is higher.
Must the driver have a clear view of the road in Belgium?
Yes. Belgian vehicle requirements provide that the driver must have a sufficient view ahead and to the sides. Objects or equipment should therefore not significantly obstruct the driver’s field of vision.
Can a dirty or damaged windscreen make sun glare more dangerous in Belgium?
Yes. Dirt, scratches, cracks or discoloration can scatter sunlight and reduce visibility. Keeping the windscreen clean and in good condition is particularly important when driving toward a low sun.
Can windscreen damage cause a vehicle to fail technical inspection in Belgium?
Yes. Certain cracks, scratches, distortions or discolorations within the area swept by the windscreen wipers can result in rejection during technical inspection.
Are there special Belgian traffic rules specifically for sun glare?
There is no separate driving regime specifically for sunlight. The general rule applies: the driver must adapt speed and driving behaviour to the available visibility and remain able to drive safely.

Traffic rules
Belgium