The streetlight replacement project has started.
The one arterial that I have driven at night looks good. The have been replacing the cobra lights as well as the shielded with LED's.
The LED's appear brighter when you look at them, however, when you look at the street the light intensity is almost exactly the same as with the previous lights. That might mute complaints since the lights appear brighter.
The one surprise was the little "wings" on the edge of the LED lights. They do spread the light down, but also sideways along the roadway. From a driving perspective almost the entire road is illuminated rather than having a puddle of light underneath each streetlight. The cut-off is really good. If I owned a house along a lighted street I would be pleased....hardly any light spilling over onto the homes.
The conversion is going really quickly. Last night, I saw that one street had the new LED's on one side and the cobra light fixtures on the other side of the street. I was going to take a picture tonight, but by this afternoon the entire street was converted to LED's.
It will be interesting to see what the final impact will be on light pollution. I see a lot of "orange" streetlights from my house....I assume that they are the cobra light fixtures. Those should no longer be visible and should significantly darken the hillsides and my house.
I don't know how much glow the new LED's will contribute upward, but the sideways glow should be reduced. I sit four miles and three hundred feet above downtown Wenatchee.
The conversion should be completed this month. At this point, my guess is slightly darker skies. The conversion will really bring out how bad the wall packs and commercial lighting is in town when it comes to light trespass and light pollution. That will be a tougher issue to address particularly for the community.
Edited by vsteblina, 05 December 2018 - 11:40 PM.