One of the most common problems is glare from other cars’ headlights, which can be dangerous for drivers.
How the Car’s Secret Button Works
To counteract this problem, most vehicles have a secret button on the rearview mirror.
This feature, which has been around for decades, reduces the glare from lights coming from behind, making nighttime driving safer.
In newer models, this system has become automatic thanks to electrochromic rearview mirrors.
These mirrors detect light intensity and, using sensors and a special coating, darken their surface to prevent glare.
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When the distracting light disappears, the mirror automatically returns to its original state.
Impact on nighttime driving
According to the Directorate General of Traffic, while most accidents occur during the day, nighttime accidents tend to be more serious.
Specialists warn that drivers’ vision is reduced by up to 20% at night, making it difficult to perceive distances and obstacles.
Therefore, activating the car’s secret button is a fundamental measure to protect against glare and reduce eye fatigue.
