Cat's eyes

Commuting, Day rides, Audax, Incidents, etc.
cjchambers
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Joined: 29 Jun 2008, 9:55pm
Location: Hartlepool

Re: Cat's eyes

Postby cjchambers » 13 Jul 2013, 4:27pm

661-Pete wrote: . . . But we've moved on somewhat since those times. . . .

Ah, we certainly have! A minor A-road junction I used to regularly traverse had solar powered LED cat's eyes. Very eerie! A bit like this --> http://www.perspectivaciudadana.com/con ... emid=27732

It's a pretty notorious junction, and it seems that the main cause of incidents is drivers being confused by the layout of the road, so I suspect they do have some benefit in this particular location although there was still always a regular sprinkling of bodywork and glass.

byegad
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Joined: 3 Sep 2007, 9:44am

Re: Cat's eyes

Postby byegad » 4 Aug 2013, 9:14am

Si wrote:The new version do seem to deviate your steering much more than the old version. Although a bike wasn't normally heavy enough to make the old version disappear into the road, the 'casing' around it had a more forgiving profile when hit with a cycle wheel IME.


The old ones went down as you ran over them, and while still not great for grip the were sprung so you didn't bounce too high. Newer ones around home seem to be solid, and are much worse for two wheel vehicles.
"I thought of that while riding my bike." -Albert Einstein, on the Theory of Relativity

2007 ICE QNT
2008 Hase Kettwiesel AL27
2011 Catrike Trail
1951 engine

SA_SA_SA
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Joined: 31 Oct 2009, 1:46pm

Re: Cat's eyes

Postby SA_SA_SA » 4 Aug 2013, 3:47pm

They allow people to drive much faster than the range of dipped headlamps allows: ie driving blind:

perhaps it would be best to limit them to corners, allowing a heart in mouth "save" as a reminder to drive within headlamp range in futrure.
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byegad
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Re: Cat's eyes

Postby byegad » 4 Aug 2013, 4:20pm

SA_SA_SA wrote:They allow people to drive much faster than the range of dipped headlamps allows: ie driving blind:

perhaps it would be best to limit them to corners, allowing a heart in mouth "save" as a reminder to drive within headlamp range in futrure.


Dipped headlights ore for towns or oncoming road users. In the countryside you default to main beam.
"I thought of that while riding my bike." -Albert Einstein, on the Theory of Relativity

2007 ICE QNT
2008 Hase Kettwiesel AL27
2011 Catrike Trail
1951 engine

SA_SA_SA
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Re: Cat's eyes

Postby SA_SA_SA » 4 Aug 2013, 4:40pm

byegad wrote:Dipped headlights ore for towns or oncoming road users. In the countryside you default to main beam.


Except when oncoming traffic or approaching bends prevent this!
Which might be a lot of the time: most vehicles just drive blindly when this happens: they don't slow down, just
blindly follow the cats eyes.

On busy / bendy unlit roads that might mean dipped beam is used a lot and oncoming headlamps will make it seeing with dipped beam even harder.
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Adam S
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Joined: 15 Nov 2012, 8:53pm

Re: Cat's eyes

Postby Adam S » 4 Aug 2013, 5:18pm

What's wrong with using the main beam on a bendy road?

SA_SA_SA
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Re: Cat's eyes

Postby SA_SA_SA » 4 Aug 2013, 6:05pm

Adam S wrote:What's wrong with using the main beam on a bendy road?


You can't see round the corners, so should assume other vehicles / cyclists / pedestrians etc are coming who won;t want main beam in their eyes,
You need to dip early for left corners to avoid blinding oncomers as they arrive. Anyway, if the roads bendy you
will spend a lot of time on dip.
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byegad
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Re: Cat's eyes

Postby byegad » 4 Aug 2013, 6:10pm

SA_SA_SA wrote:
byegad wrote:Dipped headlights ore for towns or oncoming road users. In the countryside you default to main beam.


Except when oncoming traffic or approaching bends prevent this!
Which might be a lot of the time: most vehicles just drive blindly when this happens: they don't slow down, just
blindly follow the cats eyes.

On busy / bendy unlit roads that might mean dipped beam is used a lot and oncoming headlamps will make it seeing with dipped beam even harder.


Couldn't disagree more!

You use main beam to light up as much road as you would see in the day AND to give prior warning to oncoming traffic that you are there. When I see oncoming drivers on main beam on such a road I'm ready to dip as they come around the last corner. Oncoming drivers on dipped beam are seen much later and so my 'dip' is so much later as they don't light up the last corner from as far away as a main beam.

Also driving on dipped beam, you can't see as far down the road, this is noticeable as I routinely catch drivers pootling along on dipped beam on a quiet road where on main beam you can safely see to drive much faster on main beam.
"I thought of that while riding my bike." -Albert Einstein, on the Theory of Relativity

2007 ICE QNT
2008 Hase Kettwiesel AL27
2011 Catrike Trail
1951 engine

PDQ
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Re: Cat's eyes

Postby PDQ » 4 Aug 2013, 6:38pm

And main beam will help pick out the reflectors of cyclists who choose not to have any lights. I use main beam in quiet late night urban situations sometimes, just for that reason. Also helps pick out pedestrians with reflective clothing.

SA_SA_SA
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Re: Cat's eyes

Postby SA_SA_SA » 4 Aug 2013, 6:59pm

byegad wrote:Couldn't disagree more!


You should only use main beam where it won't blind/dazzle oncoming traffic. This means on a bendy or busy road you will often have to use dipped beam for a time. A cars main beam in the eye isn't pleasant .

On a left bend* your main beam will intersect
an oncoming drivers eyes earlier than a right hand one: so your car has to dip early to avoid blinding/dazzling them

*assuming driving on left as in the UK.

I am not suggesting always driving on dipped, just stating that use of main beam may be prevented by road /oncoming traffic conditions for a large percentage of time.
Last edited by SA_SA_SA on 4 Aug 2013, 8:18pm, edited 1 time in total.
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rootes
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Location: Woking, Surrey

Re: Cat's eyes

Postby rootes » 4 Aug 2013, 7:32pm

and it is hardly a chore to switch from mains to dip and back again is it...

shame moderns dont have a floor dip switch either...

chrisc
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Joined: 2 Sep 2011, 6:34pm
Location: Farnborough, Hants.

Re: Cat's eyes

Postby chrisc » 4 Aug 2013, 7:41pm

Ex-Morris Minor driver by any chance Mr Rootes ?

But TBH I frequently found that dipping lights as I approached a rural blind bend tended to get my clutch foot double-committed when a gear change was also required !
Tourer : 2010 Giant CRS City 4.0
Other : 1963 Denton retro (now back in the loft!)

stoobs
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Joined: 27 Nov 2007, 4:45am

Re: Cat's eyes

Postby stoobs » 5 Aug 2013, 12:58pm

chrisc wrote:Ex-Morris Minor driver by any chance Mr Rootes ?

But TBH I frequently found that dipping lights as I approached a rural blind bend tended to get my clutch foot double-committed when a gear change was also required !


+1 in a Land Rover Series IIA! Especially if you need to double declutch into second gear!

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[XAP]Bob
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Re: Cat's eyes

Postby [XAP]Bob » 6 Aug 2013, 7:16pm

Nowadays it would be easy enough to have dual controls...
A shortcut has to be a challenge, otherwise it would just be the way. No situation is so dire that panic cannot make it worse.
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661-Pete
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Re: Cat's eyes

Postby 661-Pete » 6 Aug 2013, 8:54pm

My first car was an old Austin A55 similar to this - it had a floor dipswitch and column-mounted gear-change - most peculiar!

I can also remember the original Mini (not the re-vamped rubbish!) which had its starter button recessed into the floor.

Trouble with modern cars, they've become a bit too much 'same-old, same-old'. A bit like bikes... :lol:
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