AreWeLostYet
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RVTravel said:Vehicle glass probably blocks 80-90% of UV.
Articles I've read say a small minority of cars' windshields can block up to 96% of UV. But that's just the windshields. The side and rear glass blocks far less UV. Windshields are slanted (causing the rays to travel diagonally through the thickness of glass), usually more tinted and much thicker than the rest of the glass on the car.