How can I distinguish mercury vapor streetlights from metal halide streetlights?

Mercury vapor streetlights and metal halide streetlights look alike. How can I distinguish them?
  • CRI: The metal halide street lights have a higher CRI than mercury vapor street lights. Therefore, things look clearer under metal halide street lights.
  • Brightness: Metal halide street lights are brighter than mercury vapor street lights.
  • Color temperature: Metal halide street lights are whiter than mercury vapor street lights. Mercury vapor street lights perform well at penetrating the fog.

More reading: 7 Types of Street Lights Classified by Light Sources

What Others Are Asking

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