The answer is generally no, fog lights cannot legally be green in most jurisdictions. There are specific regulations around the color of fog lights for safety reasons. Let’s take a closer look at why fog lights can’t be green and the regulations around their use.
Why Can’t Fog Lights be Green?
There are a few key reasons why fog lights can’t be green:
- Green lights are reserved for emergency vehicles – Green lights are restricted for use by emergency vehicles like ambulances and police cars. Allowing regular vehicles to have green lights could cause confusion.
- Green light is less effective at penetrating fog – Fog lights are designed to cut through fog and improve visibility. Studies show amber and white light penetrates fog better than green light.
- Regulations prohibit green fog lights – Transportation regulations in most jurisdictions prohibit green fog lights to avoid confusion with emergency vehicles.
So while green fog lights may look cool, they are less effective and not legally allowed. Amber and white fog lights are the best choices for cutting through fog.
Fog Light Regulations in the United States
In the United States, fog light regulations are set at the federal and state level. Here are the key regulations:
- Federal Motor Vehicle Safety Standard 108 requires fog lights to emit amber or white light.
- Most states follow the federal regulations and do not allow green fog lights.
- A few states such as California and Pennsylvania restrict fog light use to low visibility conditions.
- Most states allow both front and rear fog lights, while a few restrict use to the front only.
So federal regulations prohibit green fog lights nationwide. Additionally, most states follow these federal rules and ban green fog lights. There are a few exceptions, but in general green fog lights are illegal in the US.
Fog Light Regulations in Canada
In Canada, fog light regulations are set at the federal and provincial/territorial level. Here are the key regulations:
- Federal Motor Vehicle Safety Standard 108 requires fog lights to emit amber or white light, banning green.
- Most provinces/territories follow the federal standard and do not permit green fog lights.
- Quebec restricts fog light use to conditions of low visibility like fog, snow, rain, dust, etc.
- Other provinces generally allow fog lights at driver’s discretion.
As in the US, federal regulations in Canada prohibit green fog lights. Most provinces adhere to this federal standard. While specific use regulations vary between provinces, none permit green fog lights.
Fog Light Regulations in Europe
Fog light regulations in Europe are standardized across the continent by UNECE Regulation 19:
- Front fog lights must emit white or selective yellow (amber) light.
- Rear fog lights must only emit red light.
- Green fog lights are prohibited.
- Use is permitted when visibility is reduced to less than 100 meters.
This UNECE regulation applies across the European Union and many other European countries. It bans green fog lights and limits use to poor visibility conditions.
Fog Light Regulations in Australia
In Australia, fog light regulations are determined at the state/territory level:
- Front fog lights must emit white or amber light – green is prohibited.
- Rear fog lights must emit red light only.
- Most states restrict use to hazardous weather conditions causing reduced visibility.
So Australia follows the common worldwide practice of restricting fog lights to amber and white light. Green fog lights are not legal anywhere in the country.
In summary, green fog lights are prohibited worldwide for safety reasons and to avoid confusion with emergency vehicles. Regulations across North America, Europe, and Australia all restrict fog lights to white/amber at the front and red at the rear. While specific use regulations vary between jurisdictions, none permit green fog lights. So if you’re hoping to install some green fog lights on your vehicle, you’re unfortunately out of luck!
Green Fog Light Legality by Country
|Country||Are Green Fog Lights Legal?|
|United States||No, federal regulations prohibit green fog lights|
|Canada||No, federal regulations prohibit green fog lights|
|Mexico||No, green fog lights are not permitted|
|United Kingdom||No, UNECE Regulation 19 prohibits green fog lights|
|France||No, UNECE Regulation 19 prohibits green fog lights|
|Germany||No, UNECE Regulation 19 prohibits green fog lights|
|Spain||No, UNECE Regulation 19 prohibits green fog lights|
|Italy||No, UNECE Regulation 19 prohibits green fog lights|
|Sweden||No, UNECE Regulation 19 prohibits green fog lights|
|Australia||No, green fog lights are prohibited nationwide|
This table summarizes the legality of green fog lights in various major countries around the world. As shown, regulations uniformly prohibit the use of green fog lights globally for safety reasons.
Optimal Fog Light Colors
If green isn’t permitted, what are the best fog light colors? Research shows that amber and white are the optimal fog light colors:
- Amber: Amber or selective yellow light provides the best visibility in foggy conditions. The light’s longer wavelength penetrates fog best.
- White: White light also performs well in fog. It reflects well off road markings and signs.
- Avoid blue: Blue light scatters too easily and reduces visibility in fog.
Here is a table summarizing the visibility provided by different fog light colors:
|Amber||Excellent – long wavelength penetrates fog best|
|White||Good – reflects well off road markings|
|Green||Poor – scatters too easily in fog|
|Blue||Poor – too easily scattered by fog|
Based on physics and scientific testing, amber or white deliver the best visibility for fog lights. Avoid green or blue tinted lights.
Recommended Fog Light Options
When selecting new fog lights, stick with DOT and SAE approved lighting:
- Amber: Philips X-tremeVision amber fog lights. Top choice for visibility.
- White: Sylvania XtraVision white fog lights. Also provides bright light.
- Amber/White: Kensun dual-color amber/white fog lights. Gives flexibility.
- LED: JDM ASTAR LED fog lights. Long-lasting with crisp light.
Always check regulations in your jurisdiction, but these options from Philips, Sylvania, Kensun and JDM ASTAR deliver great visibility and comply with fog light rules.
3 Key Takeaways
Here are 3 key takeaways on whether fog lights can be green:
- Green fog lights are prohibited worldwide due to safety issues and confusion with emergency vehicles.
- Amber or white fog lights provide the best visibility in fog and rain.
- Choose DOT and SAE approved, amber or white fog lights from reputable brands for optimal visibility.
So unfortunately green fog lights are not allowed. But amber and white lights are your best options for illuminating the road in hazardous conditions. Follow fog light regulations and drive safely.