DRLs have been legally required to be fitted at the front of all new EU cars and small vans since 2011, but even though some manufacturers choose to include them at the rear, this is not compulsory.

Studies have shown that DRLs can reduce multiple-vehicle daytime crashes by as much as 11 percent. Such lights have proven especially effective at preventing daytime head-on and front-corner collisions by making it easier for motorists to see a vehicle, particularly as it approaches from far away.

Daytime Running Lights

Yes you can. If the police officer is having a good day you can get off with a warning. In a place where daytime driving lights are required you may be stopped if a light is out.

Registered. Yes, illegal. Red and blue lights are for police and good point on the steady burning red light requirement in California, that practice goes back many decades when a lady did not stop for a CHP behind her.

In the United States of America, certain underglow lights are illegal. Particularly the colors blue and red, as well as any kind of flashing light effects, are banned from public streets in some states as they can distract drivers or be confused with police cars.

You’re allowed to have one running board light in white or amber on either side of your car. You’re allowed two lamps at your side cowl or fender as well as in the front of your car in white or amber.

Yes, even if its an illuminated plate screw. Federal law prohibits any vehicle from displaying any external blue light in any position unless it is an emergency vehicle. However, you can have interior blue lighting given that the only visible part of the lighting is the light emitted.

LED bulbs are now much more common in cars, including brake lights, fog lights, and interior lights. The general rule is if you have a halogen bulb currently installed and you want to upgrade to LED, it won’t be road legal.

No it is not illegal to have LED Headlights. They are just a more efficient type of lamp. It may be illegal on the other hand to have a colored headlights like green or red, it may be illegal to have high beams instead of headlights but having led headlights are not illegal.

LED lights aimed too high can blind other drivers, while LED headlights aimed too low don’t reveal enough of the highway ahead. They aren’t designed to melt snow off your vehicle’s headlight lenses.

LEDs have a few advantages over halogens. They’re brighter but consume less power, don’t heat up as much, and take up less space. However, XenonPro explains, you can’t simply replace a halogen bulb with an LED assembly.

All vehicles fitted with halogen headlight bulbs from the factory are suitable for LED conversion. The main advantage is a massive increase in road illumination and therefore improved safety when driving at night. The kit I used features CREE LED bulbs that have an output of 3,200 lumens.

Improved illumination is the most apparent difference from halogen lights. LED headlights can illuminate dark roadways 25% farther than their halogen counterparts, and high-beam settings on LEDs offer a significant improvement over low-beam settings, according to a study from AAA.

Fanless LED has a longer lifespan as compared to fan LED headlights. It is a cost-effective and better energy efficiency option as compared to a Fan LED headlight. 2. Fanless LED performs a noiseless operation as compared to Fan LED Headlights and provides a superior lighting performance.

LEDs are ideal as they are brighter but do not produce the same glare that HIDs are responsible for. LEDs are compact and energy efficient. Unlike the HID, LED headlights provide instant light when turned on.

LEDs are up to 300% brighter than standard halogen bulbs, and around the same level of brightness as HIDs. So LEDs are definitely bright enough to be used in projector headlights.

“High-intensity headlights, otherwise known as HID headlights, made their debut several years ago on some luxury vehicles,” said Sgt. Brian Pennings with the California Highway Patrol. “Any other color of headlight is illegal in California.

Xenon HID bulbs with a high colour temperature – such as 8000K or above – are sometimes not road legal. Halogen bulbs with a colour temperature of 4300K or over also tend to be non-road legal. Brightness should be one of your first considerations when purchasing headlight bulbs.

Super Moderator. FYI, ALL HID conversions are ILLEGAL in MAJORITY of states.

The bulbs must either be white or yellow. That means bulbs that produce a blue light are not approved for road use. Halogen bulbs with a colour temperature over 4200K are not road legal. Some xenon HIDs with colour temperatures of up to 6000K are considered road legal.

The only color headlight that is legal to use in any state is white. This means that you cannot use any other color headlight. Most states mandate that the only allowable colors for lights on the front of a vehicle are white, yellow, and amber.

The answer here is no and yes. Green headlights — or lights of any color other than white or yellowish white and, in some cases red — are not legal.

Bulbs around 5000K are illegal unless using off-road, and will appear to have a distinctive white light with a slight blue tint. If you’re after a Xenon HID effect, your best choice is the Philips Diamond Vision range. Because these bulbs have a Kelvin rating of 5000K, they’re not legal for road use.