Vehicle lightsBrussels
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156. Vehicle lights
Vehicle lights are lighting and signalling devices fitted to a vehicle to help the driver see, make the vehicle visible and communicate intentions to other road users. They include dipped-beam and main-beam headlights, position lights, daytime running lights, rear lights, brake lights, direction indicators, reversing lights, fog lights and hazard warning lights.
Drivers should use the appropriate lights for the visibility, weather and traffic conditions. Lights must be kept clean and in working condition, and lights that can dazzle other road users should only be used when permitted.
Wikimedia.org • Christopher Ziemnowicz • CC BY-SA
When must vehicle lights be used in Belgium?
Between nightfall and daybreak, and whenever visibility is reduced so that it is no longer possible to see clearly for approximately 200 metres, motor vehicles must use dipped-beam or main-beam headlights together with the required rear lights.
When must you change from main beam to dipped beam in Belgium?
Main beam must be replaced by dipped beam when approaching an oncoming road user who could be dazzled, when following another vehicle at less than 50 metres except while overtaking, and when the road is continuously and sufficiently illuminated to allow clear visibility for approximately 100 metres.
When may fog lights be used in Belgium?
Front fog lights may only be used in fog, snowfall or heavy rain. Rear fog lights must be used in fog or snowfall when visibility is reduced to less than 100 metres and also in heavy rain, and they may not be used in other circumstances.

Traffic rules
Brussels