The use of fog lights must strictly follow visibility conditions and should only be turned on when visibility is below 200 meters, such as in heavy fog, heavy rain, heavy snow, or sandstorm conditions. Front fog lights employ low-angle scattered yellow light to penetrate fog, while rear fog lights utilize high-intensity red light to alert following vehicles, and both must be used in combination. Activating fog lights during clear weather or good visibility conditions is prohibited as their intense glare may impair the vision of oncoming and trailing drivers, constituting a traffic violation punishable by a 50-ringgit fine and 1 penalty point. Special attention should be paid to the fact that high beams in foggy conditions will worsen visibility due to light reflection, and modifying fog light wattage may create safety risks. When encountering fog banks in mountainous areas, maintain continuous fog light operation until exiting the fog zone while keeping speed under 40 km/h with minimum 50-meter following distance. Regular inspection of fog light luminosity and wiring integrity is essential, maintaining colour temperature below 3000K for optimal warm yellow light penetration.
