Fog lights should be used in severe weather conditions with visibility below 200 meters, including fog, heavy rain, snow, sandstorms, or hailstorms, or when there is no street lighting at night. Specific operations need to be adjusted according to visibility levels: when visibility is between 100 and 200 meters, fog lights, low-beam headlights, and position lights should be turned on, the speed should not exceed 60 km/h, and a following distance of 100 meters should be maintained; when visibility is between 50 and 100 meters, the speed should be reduced to below 40 km/h, and the following distance should be no less than 50 meters; if visibility is below 30 meters, fog lights and hazard warning lights should be turned on and the vehicle should be pulled over to the side of the road. Note that fog lights should not be misused in clear weather to avoid strong light interfering with other drivers' vision, and front fog lights must be activated simultaneously when rear fog lights are turned on. Light control is typically achieved through the knob on the left side of the steering wheel or the buttons on the instrument panel, and drivers should familiarize themselves with the vehicle's configuration before operation. Additionally, high-beam headlights are strictly prohibited in low-visibility conditions to prevent light reflection from water droplets or mist from exacerbating visual impairment. Proper use of fog lights is a critical aspect of safe driving, which should be combined with speed control and distance management to form a comprehensive safety system.
