Fog lights are essential safety features for vehicles, especially indispensable in severe weather conditions such as rain, fog, and sandstorms where visibility is less than 200 meters. Front fog lights use yellow or white light sources and are installed lower than headlights; their scattered light can penetrate fog to illuminate the nearby road surface. Rear fog lights are high-intensity red light sources, with brightness more than three times that of taillights, which can warn following vehicles to avoid rear-end collisions. When driving on highways with visibility below 200 meters, fog lights must be turned on and a safe speed maintained. Violations will result in a minimum fine of 50 ringgit and demerit points. The correct operation method varies by vehicle model, with three common control types: lever-style, rotary, and push-button. It is recommended that vehicle owners familiarize themselves with their car's lighting system and periodically inspect fog lights to ensure this critical safety feature can be promptly activated during adverse weather conditions.