What is the small light below the headlight?

[StAliyah]

The small light below the headlight is the fog light, which is turned on during rainy or foggy weather. It has strong light penetration, reducing the adverse effects on driving visibility in complex weather conditions. Here is some relevant information about fog lights: 1. Purpose: The function of fog lights is to make the vehicle visible to other vehicles in foggy or rainy weather when visibility is significantly affected by the weather. Therefore, the light source of fog lights needs to have strong penetration. Most vehicles use halogen fog lights, while xenon fog lights are more advanced. 2. Classification of fog lights: Anti-fog lights are divided into front fog lights and rear fog lights. Front fog lights are usually bright yellow, while rear fog lights are red. The symbol for the rear fog light is slightly different from that of the front fog light. The light lines of the front fog light symbol point downward, while those of the rear fog light are parallel. They are generally located on the instrument control panel inside the vehicle.