Front fog lights are generally low mounted, high intensity, short-range lights that may be yellow or white in colour. Rear fog lights are red in colour and are about the same intensity as a brake light.
Rear fog lights are intended to make the vehicle more conspicuous in foggy conditions, while front fog lights improve visibility by penetrating fog.
Front fog lights are often confused with driving lights. However, they differ from driving lights in that they must operate independently of headlights while driving lights may only operate in conjunction with high beam headlights. The beam pattern and illumination range of the two are also quite different.
Misuse of fog lights is a common source of motorist complaints and their acceptable use is defined in law.
- They may only be used in adverse weather conditions, such as fog or heavy rain, that reduces visibility.
- The use of front or rear fog lights in clear conditions (day or night) is an offence.
For information about fitting aftermarket fog lights see Sections 89 and 90 of Acceptable use is outlined in Front fog lights are designed to better illuminate the road in fog, snowfall, rainstorms or dust clouds.
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