Why dozens of street lights on 2 major Calgary roads are turning blue (or purple)
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 are street lights across the Upstate turning purple?
Streetlights Are Mysteriously Turning Purple. Here's Why
Why Street Lights Across America Are Turning Purple - The Autopian
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
Calgarians weigh in on proposed budget increase, shifting tax burden from businesses
Dark Sky Consulting Blog - DARK SKY CONSULTING, LLC
What are those little things on top of street lights at an intersection? (Cameras, sensors, etc.) - Quora
Calgarians weigh in on proposed budget increase, shifting tax burden from businesses
Hard on the eyes': Defective streetlights on some Calgary roadways have drivers blue, blue lights
Why dozens of street lights on 2 major Calgary roads are turning blue (or purple)
traffic, News
Why dozens of street lights on 2 major Calgary roads are turning blue (or purple)
Strange defect that's turning streetlights purple in Kentucky : r/LiminalSpace
