Why dozens of street lights on 2 major Calgary roads are turning blue (or purple)
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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.
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Why UV light? : r/Calgary
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The City of Calgary, Lighting the Way
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Why dozens of street lights on 2 major Calgary roads are turning blue (or purple)
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Can I turn right on this red? : r/Calgary
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From hobby to money: Quezon City engineer cultures and markets Australian red claw crayfish – Atin Ito
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