Drivers are left astonished after discovering that the black dots on car windshields have a secret function.
The black dots are called “frit” and are usually found on the outer edges of the front windshield near a ceramic band. But what are they for?
According to the British tabloid The Sun, the black dots help regulate the temperature of the car and ensure that the glass does not suffer from optical distortions that could impair driving.
“The black dots, or dot matrix, actually help distribute temperature evenly to reduce optical distortion,” explained specialists from Autoglaze.
“This happens when the frit band (the solid black area) heats up much faster than the windshield glass, creating an optical distortion that makes straight lines appear curved or bowed inward toward the center.”
For this reason, the black dots that gradually decrease in size “help reduce this effect by dissipating heat and spreading it evenly,” according to the experts.
In addition to their practical use, they explained that the frit also has an aesthetic function. According to them, this gradual decrease in size makes the transition between the ceramic band and the glass appear much smoother to the eye.
Meanwhile, the black enamel around it protects the urethane sealant from the sun’s UV rays to prevent cracking or weakening of the glass. Without the frits, the windshield could come loose, which can be very dangerous at high speeds.
It is worth emphasizing that the frits can wear down or disappear over time and may need to be repaired or completely replaced.
This work should not be performed by inexperienced mechanics, so if this is your case, make sure to take your car to a specialized shop.
Photo: Unsplash / Instagram. This content was created with the help of AI and reviewed by the editorial team.
