Fog Light - what is it in Russian and why are fog lights needed?

If you have ever come across the term fog light in the instructions for the car or on foreign forums, but did not know how it is translated into Russian, this article will help you figure it out. Word fog in English it means “fog”, and light - “light”. Thus, fog light are fog lights (FTL) that are installed on cars to improve visibility in difficult weather conditions.

Fog lights are not just additional lighting, but an important safety element. They differ from conventional low-beam or high-beam headlights in their emission spectrum, beam shape and installation height. Unlike main headlights, which create a “wall of light” in fog due to the reflection of water particles, PTFs direct a wide and flat beam closer to the road, illuminating the area directly in front of the car.

In Russia, the use of fog lights is regulated Traffic regulations (clause 19.4), and their incorrect use may result in a fine. Next, we will figure out how to correctly translate and use this term, what types of PTF there are, and why they cannot be included simply “for beauty.”

What does fog light mean: exact translation and synonyms

Term fog light has several translation options into Russian depending on the context:

• 🔦 Fog lights (PTF) - the most common and correct name in the automotive field.
• 🔦 Fog lights - colloquial version, often used in everyday life.
• 🔦 Foggy headlights - literal, but rarely used translation.
• 🔦 Headlights for poor visibility — a generalized name, suitable for describing a function.

In English-speaking countries, synonyms may also occur:

• 🇺🇸 Fog lamps (American version)
• 🇬🇧 Fog lights (British version)
• 🚗 Auxiliary driving lamps (auxiliary headlights, but this is a broader concept)

It is important to understand that fog light - it's always front fog lights. Rear fog lights in English are called rear fog lights or rear fog lamps and have another purpose - to signal to other drivers about the presence of your car in poor visibility conditions.

Why do we need fog lights: physics and safety

Main task fog light — improve road visibility in fog, rain, snow or dust. But why can't conventional headlights cope with this task? It's all about the physics of light propagation:

• 🌫️ Regular headlights (low/high beam) are directed forward and upward, their beam is reflected from water droplets in the air, creating a “white veil”.
• 💡 Fog lights They emit a wide and flat beam that “spreads” over the road without illuminating the fog particles above it.
• 🔧 Installed below the main headlights, which reduces the amount of reflected light.

In addition, PTF often have a yellow tint (although this is not necessary). Yellow light is less scattered in fog compared to white light, since its wavelength is closer to the red spectrum, which is less absorbed by water vapor.

⚠️ Attention: Turning on fog lights in clear weather blinds oncoming drivers and is a traffic violation. They can only be used in conditions of poor visibility (fog, rain, snow) or on winding mountain roads.

Headlight type	Color of light	Purpose	When to use
Fog light	White or yellow	Road lighting in fog, rain, snow	When visibility is less than 300 m (traffic rules 19.4)
Rear fog lights	Red	Designation of the vehicle for other road users	Only in low visibility conditions
Low beam headlights	White	Main road lighting	A must, day and night
Driving lights	White	Long distance road lighting	Only outside the city in the absence of oncoming cars

Types of fog lights: what are they and how to choose

Not all fog light are the same. They differ in lamp type, design and installation method. Let's look at the main types:

1. By type of light source

• 💡 Halogen - the most common and budget ones. Service life ~500–1000 hours.
• 🔦 Xenon (gas discharge) - brighter than halogen, but require ignition units. Prohibited for self-installation in Russia.
• 💫 LED fog lights - energy efficient, durable (up to 50,000 hours), but more expensive than others.

2. By design

• 🔧 Standard (regular) — installed at the factory, consistent with the design of the car.
• 🔧 Universal - Suitable for most models, require modifications during installation.
• 🔧 Built-in — mounted in the bumper or radiator grille.

When choosing fog light pay attention to:

• 📋 Certification - headlights must be marked E (European standard) or DSTU (for Ukraine).
• 🔍 Luminous flux — optimally 1000–1500 lumens for LED.
• 📏 Size - must match the seat in the bumper.

How to use fog light correctly according to the 2026 traffic rules

In Russia, rules of use fog lights registered in Traffic rules, paragraph 19.4:

Fog lights can be used:

• 🌫️ In conditions of insufficient visibility (fog, rain, snowfall) together with low or high beam headlights.
• 🚗 In the dark on unlit sections of roads together with low or high beam.
• 🏔️ On mountain roads when driving up and down.

Prohibited: Use fog lights in clear weather or in the city with good visibility.

Important: rear fog light (red) can be turned on only in low visibility conditions (visibility less than 300 m). In other cases, its use blinds drivers from behind and is a violation.

Penalties for misuse fog light in 2026:

• 📋 500 rubles - for using front PTFs unnecessarily (Article 12.20 of the Administrative Code).
• 📋 500 rubles — for using rear fog lights in clear weather.
• 📋 3,000 rubles - for lack of certification for installed headlights (if they are non-standard).

How to install fog light yourself: step-by-step instructions

If your car is not equipped fog lights from the factory, you can install them yourself. The main thing is to follow the rules and not violate the design of the car.

Required tools:

• 🔧 Set of screwdrivers and wrenches
• 🔌 Soldering iron or terminal blocks
• 📏 Drill (if you need to make holes in the bumper)
• 🔋 Multimeter (for checking wiring)
• 📄 Connection diagram (included with headlights)

Step by step process:

1. Remove the bumper or protection (if access to the installation site is required).
2. Drill holes for the headlights (if there are none) and secure them with bolts or clips.
3. Route the wires from the headlights to the fuse box, using corrugated wire for protection.
4. Connect the headlights via a relay and a fuse (usually included).
5. Connect the power button in the cabin (can be integrated into the standard panel or installed separately).
6. Check the operation of the headlights and adjust the light beam (should be directed down and slightly to the right).

⚠️ Attention: If you install xenon or LED fog lights instead of halogen, this is considered a modification to the design of the vehicle. By law, such headlights must be certified for your car model, otherwise you may be fined 500 rubles or lose your license (if the light does not comply with GOST).

What happens if the fog lights are connected incorrectly?

Incorrect connections can result in short circuits, blown fuses, or even fire in the wiring. Always use a relay and fuse, and check the polarity before connecting.

Common mistakes when using and installing fog light

Even experienced drivers sometimes make mistakes related to fog lights. Here are the most common of them:

• 🚫 Unnecessary use in the city — blinds oncoming drivers and creates emergency situations.
• 🚫 Incorrect adjustment - If the headlights shine too high, they lose their effectiveness in fog.
• 🚫 Installation of non-certified headlights - may lead to a fine or problems when passing a technical inspection.
• 🚫 Ignoring the rear fog light — its absence in fog increases the risk of an accident.
• 🚫 Connection without relay - leads to wiring overload and failure of the power button.

Another common mistake is buying cheap Chinese ones. LED fog light without cooling radiators. Such headlights quickly overheat, lose brightness and fail. It is better to choose proven brands such as Hella, Osram or Philips.

Top 5 questions about fog light: answered by an auto electrician

❓ Is it possible to use fog lights instead of daytime running lights (DRLs)?

No, this is a traffic violation. DRLs should be white and turn on automatically when the engine is started. Fog lights (even white ones) are not a replacement for DRLs and can only be used in authorized cases.

❓ Why do my fog lights shine dimly?

There are several reasons:

• Wear of lamps (halogen lamps dim over time).
• Oxidation of contacts or bad mass.
• Poor voltage in the on-board network (check the battery and generator).
• Fogging of the headlight (sealing required).

First check the lamps, then the contacts and voltage with a multimeter.

❓ Is it possible to install LED lamps in standard halogen fog lights?

Technically it is possible, but there are some nuances:

• 🔹 If the headlight is not designed for LED, the light beam will be incorrect (dazzle oncoming traffic).
• 🔹 In Russia, this is equated to a change in design, which requires certification.
• 🔹 LED lamps can overheat in a closed halogen headlight housing.

It's better to buy ready-made LED fog lights with the right optics.

❓ How to adjust fog lights yourself?

To adjust:

1. Place the car on a flat area 5 meters from the wall.
2. Draw a horizontal line on the wall at the height of the center of the headlights.
3. Turn on the fog lights and adjust the screws so that the light beam is 5-10 cm below the line and slightly offset to the right.

If there are no adjustment screws, the headlights need to be disassembled or replaced.

❓ Which fog lights are better: yellow or white?

Yellow headlights penetrate fog better, but white ones provide more natural illumination. The choice depends on the conditions:

• 🟡 Yellow — optimal for frequent trips in fog.
• ⚪ White - universal, suitable for rain and snow.

Modern LED fog lights with a temperature of 3000–4500K (warm white) combine the advantages of both options.