uk.sci.weather (UK Weather) (uk.sci.weather) For the discussion of daily weather events, chiefly affecting the UK and adjacent parts of Europe, both past and predicted. The discussion is open to all, but contributions on a practical scientific level are encouraged.

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Old November 29th 07, 09:06 AM posted to uk.sci.weather
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Default Solar powered cats eyes

http://www.dailystar.co.uk/news/view...or-Cat-s-Eyes/

"The studs need two hours of sunlight to power them for up to ten days."

Solar power is least available when most needed seasonally, diurnally,
and by weather regime.

What's the betting they'll fade during a dull winter spell when
much of any low angle sun will be blocked by trees, buildings etc.
There are rumoured to be hills in parts of the UK also I gather.


PS with no "bumpy feeling of running over" motorists only
behave themselves when something's gonna hit them,
eg bollards or kirbs.




.................................................. ...........

" You're almost as sensible as Boris Johnson! "

" Madonna likes excercising with a capital S! "

" Sebastion Coe doesn't deal in millions, that's small change! "

" Shopaholics confuse quality time with wallety time ! "

" You're only a professsional if you spin things round in circles until retirement! "

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Old November 29th 07, 09:35 AM posted to uk.sci.weather
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Default Solar powered cats eyes

why on earth were the old style cats eyes phased out ?

Mike


"Mike Hatton" wrote in message
...
http://www.dailystar.co.uk/news/view...or-Cat-s-Eyes/

"The studs need two hours of sunlight to power them for up to ten days."

Solar power is least available when most needed seasonally, diurnally,
and by weather regime.

What's the betting they'll fade during a dull winter spell when
much of any low angle sun will be blocked by trees, buildings etc.
There are rumoured to be hills in parts of the UK also I gather.


PS with no "bumpy feeling of running over" motorists only
behave themselves when something's gonna hit them,
eg bollards or kirbs.




.................................................. ..........

" You're almost as sensible as Boris Johnson! "

" Madonna likes excercising with a capital S! "

" Sebastion Coe doesn't deal in millions, that's small change! "

" Shopaholics confuse quality time with wallety time ! "

" You're only a professsional if you spin things round in circles until
retirement! "

---------------------------------------------
| MET OFFICE WEATHER CENTRE |
| ------------- |
| | OPEN | |
| ------------- |
| |
| |
| |
| |
| |
---------------------------------------------
| Library pictures |
---------------------------------------------



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Old November 29th 07, 09:39 AM posted to uk.sci.weather
JPG JPG is offline
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Default Solar powered cats eyes

On 29 Nov, 09:06, Mike Hatton wrote:
http://www.dailystar.co.uk/news/view...-of-the-road-f...

"The studs need two hours of sunlight to power them for up to ten days."


Presumably ordinary daylight, even on a dull winter day, will be
sufficient to keep them topped up?


Solar power is least available when most needed seasonally, diurnally,
and by weather regime.

What's the betting they'll fade during a dull winter spell when
much of any low angle sun will be blocked by trees, buildings etc.
There are rumoured to be hills in parts of the UK also I gather.


Given that my cheap garden lights fail to operate on some winter
evenings after a dull day you may have a point.


PS with no "bumpy feeling of running over" motorists only
behave themselves when something's gonna hit them,
eg bollards or kirbs.


If they do not protrude above the road surface we will be denied the
audible feedback essential to staying on the road during thick fog!

Martin




.................................................. ..........

" You're almost as sensible as Boris Johnson! "

" Madonna likes excercising with a capital S! "

" Sebastion Coe doesn't deal in millions, that's small change! "

" Shopaholics confuse quality time with wallety time ! "

" You're only a professsional if you spin things round in circles until retirement! "

---------------------------------------------
| MET OFFICE WEATHER CENTRE |
| ------------- |
| | OPEN | |
| ------------- |
| |
| |
| |
| |
| |
---------------------------------------------
| Library pictures |
---------------------------------------------


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Old November 29th 07, 09:55 AM posted to uk.sci.weather
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Default Solar powered cats eyes

Mike Hatton wrote:
http://www.dailystar.co.uk/news/view...or-Cat-s-Eyes/


They were trialled on a stretch of the A1065 near RAF Lakenheath;
they've been there for years now.

They seem to work very well. Being LEDs, they have a flicker about them
which is a bit annoying, and of course the most surprising thing of all
is seeing them in your mirror (backwards).
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Old November 29th 07, 11:56 AM posted to uk.sci.weather
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Default Solar powered cats eyes

On Nov 29, 9:55 am, chris wrote:
Mike Hatton wrote:
http://www.dailystar.co.uk/news/view...-of-the-road-f...


They were trialled on a stretch of the A1065 near RAF Lakenheath;
they've been there for years now.

They seem to work very well. Being LEDs, they have a flicker about them
which is a bit annoying, and of course the most surprising thing of all
is seeing them in your mirror (backwards).


They have also been tested on a road near me (Minley Road leading to
J4a of the M3), and they seemed pretty useless. When they were first
installed they worked very well, and lit up a very dark stretch of
road very clearly, but within a few months most of them had packed up
and only about a third of them still worked. You'd think they could
incorporate a standard cat's-eye type reflector as a back-up for when
the LED doesn't work...


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Old November 29th 07, 03:38 PM posted to uk.sci.weather
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Default Solar powered cats eyes

On Nov 29, 9:35 am, "flybywire" wrote:
why on earth were the old style cats eyes phased out ?

Mike

"Mike Hatton" wrote in message

...



http://www.dailystar.co.uk/news/view...-of-the-road-f...


"The studs need two hours of sunlight to power them for up to ten days."


Solar power is least available when most needed seasonally, diurnally,
and by weather regime.


What's the betting they'll fade during a dull winter spell when
much of any low angle sun will be blocked by trees, buildings etc.
There are rumoured to be hills in parts of the UK also I gather.


PS with no "bumpy feeling of running over" motorists only
behave themselves when something's gonna hit them,
eg bollards or kirbs.


.................................................. ..........


" You're almost as sensible as Boris Johnson! "


" Madonna likes excercising with a capital S! "


" Sebastion Coe doesn't deal in millions, that's small change! "


" Shopaholics confuse quality time with wallety time ! "


" You're only a professsional if you spin things round in circles until
retirement! "


---------------------------------------------
| MET OFFICE WEATHER CENTRE |
| ------------- |
| | OPEN | |
| ------------- |
| |
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| Library pictures |
---------------------------------------------- Hide quoted text -


- Show quoted text -


Probably trying to appease the animal rights nutters. Next
to go: violin strings. I am actually rather soppy about pussycats.
To be serious for a minute, I can't see what was wrong with
the old cat's-eye reflectors. The fact that they protrude from the
road a little can only be a good thing because if you can feel them
you've wandered off the centre of your lane. This may well be quite
legitimate during overtaking but the bumps will remind you to get back
in lane. As to the claimed "70% reduction in accidents" attributed to
the new technology I simply don't believe it. There must have been
some statistical sleight-of-hand, or plain lies.

Tudor Hughes, Warlingham, Surrey.

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Old November 29th 07, 04:08 PM posted to uk.sci.weather
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Default Solar powered cats eyes

On 29 Nov, 15:38, Tudor Hughes wrote:

Probably trying to appease the animal rights nutters. Next
to go: violin strings. I am actually rather soppy about pussycats.


Cats eyes anecdotes reminds me of a gag I heard on I'm Sorry I Haven't
A Clue - they mentioned the inventor of Cat's Eyes saw a pair of Cat's
Eyes in the reflection of his car one night, and thus the invention
came around. The next day, the cat was walking the other way and he
invented the furry pencil-sharpener!

Sorry.

Richard
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Old November 29th 07, 04:43 PM posted to uk.sci.weather
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Default Solar powered cats eyes

They're on stretches of the A41 towards Tring, they seem to work pretty
well nice and bright, a few have packed up but no more than ordinary
cats eyes.





Mike Hatton wrote:
http://www.dailystar.co.uk/news/view...or-Cat-s-Eyes/


"The studs need two hours of sunlight to power them for up to ten days."

Solar power is least available when most needed seasonally, diurnally,
and by weather regime.

What's the betting they'll fade during a dull winter spell when
much of any low angle sun will be blocked by trees, buildings etc.
There are rumoured to be hills in parts of the UK also I gather.


PS with no "bumpy feeling of running over" motorists only
behave themselves when something's gonna hit them,
eg bollards or kirbs.




.................................................. ..........

" You're almost as sensible as Boris Johnson! "

" Madonna likes excercising with a capital S! "

" Sebastion Coe doesn't deal in millions, that's small change! "

" Shopaholics confuse quality time with wallety time ! "

" You're only a professsional if you spin things round in circles until
retirement! "

---------------------------------------------
| MET OFFICE WEATHER CENTRE |
| ------------- |
| | OPEN | |
| ------------- |
| |
| |
| |
| |
| |
---------------------------------------------
| Library pictures |
---------------------------------------------

  #9   Report Post  
Old November 29th 07, 06:21 PM posted to uk.sci.weather
Col Col is offline
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Posts: 691
Default Solar powered cats eyes


"Mike Hatton" wrote in message
...
http://www.dailystar.co.uk/news/view...or-Cat-s-Eyes/

"The studs need two hours of sunlight to power them for up to ten days."

Solar power is least available when most needed seasonally, diurnally,
and by weather regime.

What's the betting they'll fade during a dull winter spell when
much of any low angle sun will be blocked by trees, buildings etc.
There are rumoured to be hills in parts of the UK also I gather.


Forget that, *this* is what you need:

http://www.leighspaints.co.uk/Roadmarkings.aspx
--
Col

Bolton, Lancashire
160m asl


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Old November 29th 07, 09:14 PM posted to uk.sci.weather
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Posts: 30
Default Solar powered cats eyes


"Mike Hatton" wrote in message
...
http://www.dailystar.co.uk/news/view...or-Cat-s-Eyes/

"The studs need two hours of sunlight to power them for up to ten days."

Solar power is least available when most needed seasonally, diurnally,
and by weather regime.

What's the betting they'll fade during a dull winter spell when
much of any low angle sun will be blocked by trees, buildings etc.
There are rumoured to be hills in parts of the UK also I gather.



That had crossed my mind as well:-)
wishful thinking or what.





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