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From: Huge <Huge@nowhere.much.invalid>
Newsgroups: sci.misc,uk.d-i-y
Subject: Re: Energy saving auto dimming street lights
Date: 3 Jan 2018 10:08:58 GMT
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On 2018-01-03, JAB <here@toadsfoot.net> wrote:
>
> Norway - At highway 155 in Nes i Hole, 220 radars have been installed
> on light poles. They detect oncoming traffic and adjust the strength
> of the light. By doing this, the 9 km/5.5 mi stretch saves a whopping
> 2100 kWh per week. The extra investment will break even after just 4.5
> years. 
>
> https://www.youtube.com/watch?v=mi8eE_NEfHM

In the UK they save even more money by simply not lighting the roads.

-- 
Today is Pungenday, the 3rd day of Chaos in the YOLD 3184
        Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn.