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• Hard on the eyes': Defective streetlights on some Calgary roadways have drivers blue

Hard on the eyes': Defective streetlights on some Calgary roadways have drivers blue

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Scores of streetlights along some of Calgary

White LED streetlights have been turning purple because of a defect during the manufacturing process between 2017 and 2019. The yellow phosphor coating was delaminating, and the blue LED began showing through

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Streetlights Are Mysteriously Turning Purple. Here's Why