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Streetlight LED Conversion
#1
I believe converting all the city's streetlights to LED (at least, Region, Kitchener, and Waterloo, I recall specifically) was approved.

Do you know if the contracts were signed?  This cargo container like box appeared in the parking lot off the spur line trail, one box is labeled "aevitas lamp recycling program" and the other "altrade industrial".  Could these be related? 

   
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#2
Hopefully they do the responsible thing and not boost light output.
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#3
Some Alltrade sea-cans have been sitting in the lot near Waterloo City Hall for a while... wondered what project it was for. I've seen them doing work at the cement plants and steel mills.
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#4
I know it's American, but hopefully they've followed some sort of similar advice
http://www.ama-assn.org/ama/pub/news/new...hting.page

http://www.cnn.com/2016/06/21/health/led...ights-ama/
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#5
In general, it should not be necessary to boost output (exceptions exist, but then there are probably also places where the output can be reduced).

I'm not so much convinced, though, that the colour temperature of street lights is such a huge factor for human sleep patterns.  For indoor lighting (to which people are exposed to for much longer periods of time) it might be more important. 

And there is less light pollution. From CBC's article:
http://www.cbc.ca/news/canada/kitchener-...-1.3410658
Quote:Besides saving the city money, the LED street lights may also have other benefits, says Chapman.

"Cities that have deployed LED street lighting have found that because they're so much more focused, they reduce the amount of urban sky glow.

"So there are people actually in the city of Los Angeles, where they've deployed LED street lighting, where they can actually see the stars again in the middle of the city, which is quite exciting," said Chapman.
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#6
(08-05-2016, 11:01 PM)JoeKW Wrote: Hopefully they do the responsible thing and not boost light output.

Why is that the responsible thing? The light output on some streets is really quite low.
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#7
My point was that a lot of places are opting to boost light output since the cost per lumen goes way down with LED. I'm not suggesting that poorly lit areas remain poorly lit. I know I wasn't clear, sorry about that.
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#8
I absolutely love the new LED streetlights along the new Weber St. grade sep.
For daily ion construction updates, photos and general urban rail news, follow me on twitter! @Canardiain
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#9
(08-06-2016, 10:29 AM)tomh009 Wrote: In general, it should not be necessary to boost output (exceptions exist, but then there are probably also places where the output can be reduced).

I'm not so much convinced, though, that the colour temperature of street lights is such a huge factor for human sleep patterns.  For indoor lighting (to which people are exposed to for much longer periods of time) it might be more important. 

And there is less light pollution. From CBC's article:
http://www.cbc.ca/news/canada/kitchener-...-1.3410658
Quote:Besides saving the city money, the LED street lights may also have other benefits, says Chapman.

"Cities that have deployed LED street lighting have found that because they're so much more focused, they reduce the amount of urban sky glow.

"So there are people actually in the city of Los Angeles, where they've deployed LED street lighting, where they can actually see the stars again in the middle of the city, which is quite exciting," said Chapman.

That part in the quotes is very anecdotal and you can find many articles suggesting the opposite is happening in places wrt light pollution. Again this just says proper and thorough research before implementation is required.
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#10
(08-06-2016, 01:39 PM)notmyfriends Wrote: That part in the quotes is very anecdotal and you can find many articles suggesting the opposite is happening in places wrt light pollution. Again this just says proper and thorough research before implementation is required.


I actually researched this a while back. Light pollution goes down substantially with LED lighting. There are two reasons: (1) LED light is more focused and (2) the lamps can be placed lower down, this leads to higher level of lights at ground level with reduced leak upwards.
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