Why Are Fog Lights Yellow?

[VonLayla]

Fog lights are yellow for the following reasons: Strong Penetration: Light of different colors has different wavelengths. The shorter the wavelength, the farther the light can scatter in all directions. Yellow light has a much shorter wavelength compared to the white light emitted by headlights, allowing it to travel much farther and penetrate much better. Therefore, in foggy conditions, using yellow fog lights instead of headlights is an effective way to leverage the characteristics of different light colors to maximize strengths and minimize weaknesses. Conspicuous Warning: Yellow light also serves as a highly visible warning signal. Late at night, a yellow light suspended above a city intersection can be seen from a great distance even in foggy conditions, alerting drivers to proceed with caution and safely navigate the intersection.