Why is there only one rear fog light?

[StMia]

The reason there is only one rear fog light is to distinguish it from the brake lights, preventing confusion between the two. Introduction to fog lights: When driving in adverse weather conditions such as fog, snow, heavy rain, or in smoke-filled environments, front fog lights are essential for illuminating the road ahead and ensuring driving safety. In recent years, fog lights have often been integrated into the design of the front bumper. Principle of fog lights: The filament of the light source is positioned at the focal point of the reflector's parabolic surface. After reflection, it forms a beam parallel to the optical axis. The diffuser lens then spreads and refracts the beam to create a wider horizontal light pattern, ensuring the light distribution and intensity comply with regulatory requirements.