What is the function of fog lights?

[WyattMarie]

Fog lights are used to illuminate the road during rainy or foggy weather conditions. Generally referring to automotive fog lights, they are installed at the front and rear of the vehicle. Due to low visibility in foggy conditions, the driver's line of sight is limited. These lights can increase the visibility distance, especially yellow anti-fog lights, which have strong light penetration, enhancing the visibility for both the driver and other traffic participants, allowing oncoming vehicles and pedestrians to spot each other from a greater distance. In addition to the standard high beams, low beams, headlights, parking lights, rear running lights, and brake lights, most vehicles are also equipped with a set of anti-fog lights at the rear. Rear fog lights are red signal lights installed at the back of the vehicle, with higher luminous intensity than tail lights, designed to make the vehicle more noticeable to other road users in conditions of low visibility such as fog, snow, rain, or dust.