The thin horizontal lines across a car’s rear windshield do more than decorate the glass. On cold winter mornings, they help clear frost and condensation, but harsh cleaning can damage them and leave parts of the window foggy or iced over.
Thin lines on the glass form an electrical heating grid
The delicate stripes visible across the rear window are a heating grid, usually printed onto the inside of the glass. Their role is to keep the window clear by removing frost and condensation during cold winter mornings.
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