Drivers warned cars have secret button under mirror which could save lives

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.

Others, however, were quick to tease the people who didn't already know about it.

"How did none of you know this," wrote @gr3y5999.

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.

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