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Re: Energy saving auto dimming street lights

Cross-posted to 3 groups.

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In article <fb3odqFopnuU2@mid.individual.net>,
	Huge <Huge@nowhere.much.invalid> writes:
> 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.

There has been a trend to switch off the lights on rural roads/motorways
outside busy periods.  In some cases, they have been permanently switched
off. Also, many have been changed to delay switch-on until much lower light
level than used to be the case.

In UK, many of the new LED streetlamps which are controlled by mesh
networks have their light level set remotely, and automatically adjusted
at different times of night. They can be adjusted for once-off events
too, when a council is prepared to pay extra to have them on brighter for
longer if there's a local event resulting lots of people around later.

I am not aware of occupancy sensing type controls in the UK, although
they are used in some parts of continental Europe, particularly on
pedestrian footpaths.

-- 
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]

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Thread

Energy saving auto dimming street lights JAB <here@toadsfoot.net> - 2018-01-02 21:42 -0600
  Re: Energy saving auto dimming street lights Huge <Huge@nowhere.much.invalid> - 2018-01-03 10:08 +0000
    Re: Energy saving auto dimming street lights Bill <Billaboard@gmail.com> - 2018-01-03 12:42 +0000
      Re: Energy saving auto dimming street lights Tim Streater <timstreater@greenbee.net> - 2018-01-03 12:47 +0000
        Re: Energy saving auto dimming street lights Bill <Billaboard@gmail.com> - 2018-01-03 13:10 +0000
      Re: Energy saving auto dimming street lights "Brian Gaff" <briang1@blueyonder.co.uk> - 2018-01-03 15:10 +0000
      Re: Energy saving auto dimming street lights DerbyBorn <Somewhere@Nearhome.com> - 2018-01-03 15:14 +0000
        Re: Energy saving auto dimming street lights "Rod Speed" <rod.speed.aaa@gmail.com> - 2018-01-04 06:25 +1100
        Re: Energy saving auto dimming street lights Bruce Horrocks <07.013@scorecrow.com> - 2018-01-04 01:10 +0000
          Re: Energy saving auto dimming street lights JAB <here@toadsfoot.net> - 2018-01-03 20:15 -0600
            Re: Energy saving auto dimming street lights Bruce Horrocks <07.013@scorecrow.com> - 2018-01-05 00:19 +0000
              Re: Energy saving auto dimming street lights JAB <here@toadsfoot.net> - 2018-01-04 19:16 -0600
                Re: Energy saving auto dimming street lights DerbyBorn <Somewhere@Nearhome.com> - 2018-01-07 12:59 +0000
    Re: Energy saving auto dimming street lights Robin <rbw0@hotmail.com> - 2018-01-03 12:51 +0000
      Re: Energy saving auto dimming street lights JAB <here@toadsfoot.net> - 2018-01-03 08:05 -0600
      Re: Energy saving auto dimming street lights "Rod Speed" <rod.speed.aaa@gmail.com> - 2018-01-04 06:04 +1100
    Re: Energy saving auto dimming street lights "Brian Gaff" <briang1@blueyonder.co.uk> - 2018-01-03 15:04 +0000
      Re: Energy saving auto dimming street lights Harry Bloomfield <harry.m1byt@NOSPAM.tiscali.co.uk> - 2018-01-03 16:52 +0000
    Re: Energy saving auto dimming street lights andrew@cucumber.demon.co.uk (Andrew Gabriel) - 2018-01-03 17:47 +0000
      Re: Energy saving auto dimming street lights charles <charles@candehope.me.uk> - 2018-01-03 18:34 +0000
        Re: Energy saving auto dimming street lights Andy Burns <usenet@andyburns.uk> - 2018-01-04 12:23 +0000

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