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Confusion over specs cameras

 
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mjdj1689
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Joined: Mar 03, 2006
Posts: 132

PostPosted: Wed Sep 02, 2009 6:12 am    Post subject: Confusion over specs cameras Reply with quote

I travel between Stoke On trent and Bristol with my job and I have noticed that there is going to be loads of roadworks and specs cameras on the route, not having much experiance with these cameras , I hope someone can help me.

I know they record your average speed, but I went on some roadworks today which were about 2 miles long , there were 2 sets of specs cameras on my side of the motorway 2 at the start of the roadworks and 2 at the end, will all 4 of these cameras work out your avearge speed, or are they 2 sets that can only work out your speed between the first set and again between the 2points of the second set.
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mjdj1689
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Joined: Mar 03, 2006
Posts: 132

PostPosted: Wed Sep 02, 2009 6:16 am    Post subject: Reply with quote

Forgot my second part Embarassed

Also I have been on the A50 in notts driving at nightime where they have some of these specs cameras , and you could see the red was lighted up either side of the actually camera in the middle , is this for infared nightime use, if so the cameras on the roadworks on the motorway where I was driving tonight did not have the red showing does this mean that the cameras are not working and are just dummie specs cameras ???
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GerryC
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PostPosted: Wed Sep 02, 2009 9:43 am    Post subject: Reply with quote

Specs cameras can operate in any pairing. There's no way to tell which is paired to which in order to calculate your average speed. The main point for their use is that it makes you travel at/below the limit throughout the zone and not just where the cameras are. If you see drivers dart past you and slam the brakes on for the camera, have a little giggle at their expense as they should be getting a NIP in the post soon.

As infra-red is not visible to the human eye, you are more likely to be seeing reflections off the glass panel than the light itself. It's even possible that during the day the illumination is not required. I would assume all of them are active all the time.
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johalareewi
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Joined: Jul 15, 2009
Posts: 50
Location: Hampshire UK

PostPosted: Wed Sep 02, 2009 12:01 pm    Post subject: Reply with quote

There was a BBC article about SPECS a while back

http://news.bbc.co.uk/1/hi/uk_news/magazine/7048645.stm

And also a bit more on how pairing works in the London Evening Standard

http://www.thisislondon.co.uk/news/article-23370879-details/Drivers+can+avoid+speeding+tickets...by+changing+lanes/article.do
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PaulB2005
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Joined: Jan 04, 2006
Posts: 9323
Location: Durham, UK

PostPosted: Wed Sep 02, 2009 12:21 pm    Post subject: Reply with quote

First link comes up 404 not found...

Also the second link can be disregarded as it's out of date (nearly 3 years) and no longer relevant. The lane change "tactic" no longer works.
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Andy_P
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Joined: Jun 04, 2005
Posts: 19991
Location: West and Southwest London

PostPosted: Wed Sep 02, 2009 6:27 pm    Post subject: Reply with quote

PaulB2005 wrote:
First link comes up 404 not found...

I think I've found it Very Happy
....Deeply buried on page 13 of a search on the BBC news website for "SPECS"

News - Magazine - How do average speed cameras work? . Last updated: 17 Oct 2007
(It's now at http://news.bbc.co.uk/1/hi/magazine/7048645.stm )



While I was there, here are all the other "SPECS" news stories that came up before I found the one I wanted (as well as a lot more about people's glasses!)

News - Northern Ireland - Specs system 'cuts A2 accidents' . Last updated: 3 Jun 2009

News - Northern Ireland - Police challenged on Specs system . Last updated: 18 Jul 2008

News - Scotland - Specs spies on speeding motorists . Last updated: 14 Jul 2005

News - Berkshire - Speed camera warning 'a hoax' . Last updated: 1 Nov 2003

News - Kent - Dangerous road gets speed cameras . Last updated: 31 Jul 2006

Kent Have Your Say - Commuter Hell - Message board

News - Wales - Motorists face new speed cameras . Last updated: 5 Jun 2009

News - Glasgow, Lanarkshire and West - Huge speed trap cuts road deaths . Last updated: 31 Oct 2008

News - Scotland - Speed cameras in roadworks drive . Last updated: 16 Feb 2006

News - Cornwall - Hi-tech speed cameras for tunnel . Last updated: 15 Jun 2004

Beds Herts and Bucks - Read This - Stay safe, stay slow on the M1

Stoke & Staffordshire - Travel - Your past posts on.. Speed Cameras

Cambridgeshire - Travel - Speed versus safety: the great camera debate

News - Hampshire - Speed camera 'put in wrong place' . Last updated: 31 Jan 2008

News - Cambridgeshire - New speed camera installed on A14 . Last updated: 7 Jul 2007
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