Drivers warned cars have secret button under mirror which could save lives
![The tab under the rear view mirror alters it slightly to reduce the glare from bright headlights (Image: TikTok/everythingbrooklyn)](/upload/news/2023/07/11/72852.jpg)
A secret button under the rear view mirror in many cars could save lives. But how does it work?
Many drivers are loathe to venture out at night — it's dark, meaning visibility is reduced, even with the use of headlights.
To remedy that, many car manufacturers and auto parts shops have introduced brighter beams.
But those pose a problem for many motorists, who become blinded by them. And that can lead to accidents.
A report containing surveys conducted by the National Highway Traffic Safety Administration (NHTSA) shows that many drivers complain of headlight glare and say it reduced their visibility, which is directly linked with an increased risk of crashing.
!['UK's most neglected street with post-apocalyptic scenes like The Last of Us' eiqeuihhiddinv](/upload/news/2023/02/01/165_m.jpg)
The manufacturers seem to have been thinking one step ahead, however — many cars contain a secret button that can take a bit of the edge off the glare.
One TikTok user, @everythingbrooklyn, demonstrated the button in a video that has garnered over two million views and over 96,000 likes.
"Me flipping the rear view mirror tab so the headlights don't blind me," she captioned it.
![Drivers warned cars have secret button under mirror which could save lives](https://i2-prod.mirror.co.uk/incoming/article30444252.ece/ALTERNATES/n310p/0_vlcsnap-2023-07-11-18h51m11s642.jpg)
![Drivers warned cars have secret button under mirror which could save lives](https://i2-prod.mirror.co.uk/incoming/article30444254.ece/ALTERNATES/n310p/0_vlcsnap-2023-07-11-18h51m09s767.jpg)
Underneath the rear view mirrors of many cars is a small tab that, when flipped, angles the mirror in a different direction so that the beams of light don't hit it the same way.
That essentially reduces the glare, since the light is directed down past the eye instead of into it.
But just because the glare is reduced from ordinary headlights doesn't mean it's reduced from the sun or from full-on bright beams.
The button is designed for specific use only. But when it's used, it works.
Many TikTok users flocked to the comments section of @everythingbrooklyn's post to express their shock at discovering the feature existed.
@natbr24 wrote: "I didn’t know about this either until a few weeks ago and my life has been changed ever since."
"Never knew that’s what that little tab thing is for," wrote @regan.piercee.
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Others, however, were quick to tease the people who didn't already know about it.
"How did none of you know this," wrote @gr3y5999.
![Drivers warned cars have secret button under mirror which could save lives](https://i2-prod.mirror.co.uk/incoming/article30444255.ece/ALTERNATES/s615b/0_Car-in-motion.jpg)
@oliviaaa.615 said she thought everyone knew about the feature.
Regardless of whether or not individuals knew about the feature, it exists, and it's designed to help drivers traversing the roads at night.
But will it prevent accidents?
That's unclear, according to the NHTSA survey.
A direct correlation between headlight glare and accidents has not been made, though the report does state that reduced visibility can lead to crashes.
Studies are still being conducted on headlight glare and its effects, and results are still trickling in.
Many law firms have tried to argue that the phenomenon led to crashes. Some, like Wagner & Wagner, an injury law firm, argue that the bright lights make it impossible to see moving objects, leading to crashes.
That would therefore make those with bright headlights liable in accidents.
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