Several Reddit users explained that the dots, known as "frits", are pieces of black-painted enamel baked into the borders of the glass during manufacturing. But what purpose do they serve?

Several Reddit users, meanwhile, explained that the dots are known as "frits", and are pieces of black-painted enamel that are baked into the borders of the glass during the manufacturing process.

Anyone who has sat a driving test knows there's a lot to learn about your car - but it seems many drivers are only just discovering the purpose of one common feature. Rory Thomas noticed a series of ...

A driver who was left confused by the purpose of the black dots on the inside of his car's windscreen took to social media for clarification, where he was told they are called 'frits' ...

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Praise the dotted windscreen edge!" Several other Reddit users explained that the dots are in fact known as "frits". These are pieces of black-painted enamel baked into the glass borders during ...