However, the real reason is to do with making fog lights more effective. Long story short, yellow fog lights improve drivers’ vision in foggy conditions, heavy rain or snow, when compared to white fog lights. As you might recall from school science class, visible light is made up of a spectrum of colours.
Another common question is “What’s the benefit of yellow fog lights?”.
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.
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.
Are yellow fog lights legal?
Yes they are, yellow bulbs in foglights is legal, yellow film on foglights is legal. Many cars come stock with yellow foglights, which basically clears up anything.
Some Lexus and European cars used yellow fog lights. But definitely the yellow headlight is illegal. I even see some older model cars used aftermarket HID’s on a refective headlight housing. We all know is illegal. Very confusing DMV law.
This begs the query “What is the law on use of fog lights?”
Fog lights are very bright, which means they shouldn’t be used in normal weather . Switching or leaving your fog lights on when it’s clear, or if it’s just rainy, or in light mist where visibility is greater than 100m, could land you with a fine.
Are blackout tail lights legal?
There is a DOT requirement that they have a certain light output during braking and turn signals as well as marking the vehicle in the dark. Anything that you do to darken the taillamps reduces the required light output. Also Know, is it legal to smoke tail lights? Yes, they are very illegal.
What are fog lights and are they worth it?
Unlike high and low beam head lights, 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.
When you turn on the fog lights during inclement weather, they will help make it easier to see the edges of the roadway. This can make it easier for the driver to make it safely to their destination, as long as they are driving slowly.
Do fog lights actually work?
You do get the best results when you actually use the fog lights in foggy conditions. The problem, however, is that people tend to overuse them, even when it’s not foggy outside. Some drivers, for example, have the habit of using fog lights at night for extra illumination.
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).