Yellow light is generally better because it is safer on the eyes, and it can see much further in the fog. Nonetheless, white light is very bright in the fog and it helps other road users see your vehicle. Additionally, white lights are better than stock lamps because they are mostly LEDs.
This of course begs the inquiry “Should fog lights be white or yellow?”
However, fog lights can come in blue, white, or yellow colors. But most drivers prefer the yellow-colored one, as it’s easy on the eyes. The yellow fog light is easier for the human eyes to process than the white or blue ones.
There’s a lot of debate about this, but the research says that yellow lights are no better than white lights at penetrating fog. The theory bandied about was that yellow light has a longer wavelength and is therefore less likely to be reflected by the fog particles. Turns out, this is complete poppycock.
The simple reason is that the yellow light tends to have a longer wavelength that cuts deeply through foggy weather, improve the driver’s visibility. For the record, fog lights aren’t headlights.
The next thing we asked ourselves was, what’s the benefit of yellow fog lights?
The most common answer is, the yellow fog light has many advantages, the most prominent one being its friendliness to the human eye. When on the road, you need to have your eyes on the road, and the lights should uphold your sight. Our eyes will perfectly accommodate the yellow light, whether focused on the road or oncoming road users.
What color bulb is best for fog lights?
The main types you’ll find are: HID (white, yellow, or blue)LED (white or blue)Halogen (white, yellow, or blue).
Unlike high and low beam headlights, which both see regular use, fog lights are only really useful in a small handful of very specific situations. The fact is that fog lights are specifically designed for use in poor weather and other situations where visibility is severely reduced by mist, fog, or even sand and dust in the air.