Definition
Fog lights are for low-visibility conditions: dense fog, heavy rain or heavy snow. Front fog lights are optional; rear fog lights — a more intense red than position lights — are mandatory and may only be used with visibility under 50 metres.
Key facts
- Rear fog lights are mandatory; front are optional.
- Using rear fogs in good visibility can dazzle other drivers and is fineable.
- Activate only when visibility falls below 50 m (dense fog, heavy rain, snow).
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