Fog lamps car


If you stumble out of the door at dawn with coffee in your hand, you will be surprised by a heavy white shroud covering the landscape. It is a super foggy morning that makes for a slow and tricky ride. Fog lights have been developed for such conditions, a safety feature that far outperforms conventional headlights. Let’s take a look at the science behind fog lamps. The best off road lights you find on our website.

Fog lamps for sale

Fog lights are a solution here and go a different way with all the water vapor hanging over the road. They work in several conditions of poor visibility, including fog, mist, snow and even sand. So that you can see the road through the fog, the factory installed fog lights are placed as low as possible, usually in the lower bumper cover in most modern vehicles. Despite its appearance, the fog usually does not touch the ground, but hovers about 18 inches above the surface. Due to the low arrangement of the fog lamps on a vehicle, the light beam can hit the road without interference. With a sharp shut-off angle in the upper side of the lamp housing, none of the beams illuminate to reflect the fog, only the road in front of it. Tilted downwards, fog lamps do not have the “range” of headlamps, but they should illuminate so much of the road that drivers slowly reach their destination. Since the fog lights do not just reflect the light back, other drivers are aware of your presence on the road, which is a second safety advantage.


“Driving light” is an ambiguous term that can mean headlights or any additional lighting such as fog lights or even turn signals. In current use, “driving light” refers to additional large round lights placed at the front as found in rally cars and off-road vehicles. There are many sizes and styles available, most with a universal fitting that adapts to a Subaru WRX as well as a Ford F-150. While increasing visibility at night, driving lights are designed for clear weather conditions.

Fog lamps for trucks

Front fog lamps differ from driving lamps in their internal construction and arrangement. With a beam angle in the upper part of the housing, front fog lamps are designed in such a way that they emit the light only onto the road. Another common element is yellow lenses, yellow light bulbs or both. Many drivers assume that all fog lights are yellow, but that does not have to be the case. The science behind the yellow tint is due to the wavelength of the light colors. Yellow light is a longer wavelength than blue or white light. In theory, the longer wavelength means that it can penetrate a thicker atmosphere or even water, which is why submarines have very long wavelengths to communicate. Fog lights work because of the mounting position and angle they are aimed at, not because of the color.


To understand how fog lights work, we should first take a look at how fog works. In many parts of the world, especially near large waters, fog is a regular occurrence. If the conditions are right, tiny drops of water or ice crystals can float in the air, directly above the ground surface. The tiny drops of water or ice crystals not only act like a cloud and block vision, but also reduce visibility by reflecting light that hits them. This makes driving in fog with headlights and especially with high beams a frustrating and dangerous experience.

Fog lamps for bike

All vehicles are equipped with headlights. However, not all vehicles are equipped with perfect fog lights and most drivers tend to install them as a personal safety measure. The fog lamp has a unique narrow and flat beam and is placed near the bumper. They also have a separate switch from the headlight so you can choose depending on the weather.

1. Why you need fog lights

The color temperature is the color description given to each light color. The unit of measurement for color temperature is Kelvin, while the unit of measurement for color brightness is Lumen. Contrary to what you would expect, the higher the temperature, the less visible a color is.

Fog lamps used to be yellow for a long time. History goes back to France, where the French used the yellow light to indicate the nationality of foreign cars at night. Yellow light has a color temperature of 3000 Kelvin and is therefore suitable for bad weather conditions as it is very visible. Yellow light was classified as the best result in poor visibility compared to other luminaires.

When buying fog lamps, it is best to choose the yellow ones as they offer the best visibility in bad weather.

2. City laws for fog light colors

Most city laws provide that the fog lamp should be white or amber. Oregon Law, for example, requires fog lights to be either white or yellow. Lights such as blue are prohibited. In addition, fog lights should be switched off if you are within 500 feet of an oncoming vehicle. A distance of 350 feet is indicated when one vehicle follows another.

Similar to Oregon, Washington City laws specify white and amber as acceptable light colors for fog lights. Washington law also prohibits the use of fog lights when a car’s dipped-beam headlights are not in use.
You should therefore confirm the permitted fog light colors in your city before purchasing.


If your vehicle was not factory fitted with fog lights, this is a simple and cost-effective upgrade. There are vehicle-specific kits that you can use to retrofit what the factory could have installed, but this route is not always an option. If you choose factory style fog lights, you simply know that you will probably need to remove the bumper and add the fog-specific grille for a factory look. Universal fog lights are another affordable option and can be integrated into any vehicle. Simply choose the style and size you like and find a place to attach them. They usually include hardware to adapt to almost any grille, bumper or other location of choice. Just note that fog lights with glass lenses are more durable than headlights with plastic lenses, and the yellow is just for the look. In addition, make sure you mount them in a place where they will not be destroyed by a pothole or low driveway.

After installing fog lights, take a few minutes to light them on a nearby wall and adjust the beam angle so that it is low enough. Also, remember not to drive with them all the time, as this may be illegal near you and annoy other drivers. When a light bulb burns out, fog lamps are affordable and replaceable in minutes.


The main difference between the two seems to be the price. Perhaps the reason why the yellow light is more expensive than the white light is because of the brighter view. As already mentioned, yellow light has a color temperature of 3000 Kelvin, while pure white light has a color temperature of 6000 Kelvin.

LED light bulbs give you high quality, bright light with low power consumption. They have also been recorded as fast on/off, suggesting that they have a small response time bar. LED light bulbs have also been tested for stable performance and energy savings. Anyone who wants to upgrade their halogen lights should consider the Auxbeam LED lights to be the cheapest choice.


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David Muench (Carnes Mechanical)

David Muench (Carnes Mechanical)

Hey, I’m David. I’ve worked in a cars store for 6 years. I write reviews and guides, helping people to choose the most suitable technicals and best product for them. I’m happy to finally share my knowledge of the industry here, on CarnesMechanical.

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