Why dozens of street lights on 2 major Calgary roads are turning blue (or purple)
By A Mystery Man Writer
The province says 70 street lights illuminating Stoney Trail and Deerfoot Trail are turning blue (or purple) due to a manufacturing defect — and it has no plans to replace them.
Why dozens of street lights on 2 major Calgary roads are turning blue (or purple)
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Why dozens of street lights on 2 major Calgary roads are turning blue (or purple)
Hard on the eyes': Defective streetlights on some Calgary roadways have drivers blue, blue lights
Hard on the eyes': Defective streetlights on some Calgary roadways have drivers blue
technology, News
Hard on the eyes': Defective streetlights on some Calgary roadways have drivers blue, blue lights
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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Why dozens of street lights on 2 major Calgary roads are turning blue (or purple)
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