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Old April 28th, 2010, 01:22 PM   #1
Gareth
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Cats Eyes

We have these in the UK. Indeed, they are mandatory on all motorways and highspeed roads, regardless of whether they have lighting or not. What surprises me though is the lack of them in other countries. I never see them in continental Europe and Hong Kong's roads look almost identical to the UK's yet they don't use them either. I would've thought they'd be more popular than they are, as they can really help at night.


In the UK, cats eyes are colour-coded as follows...

white - lanes that separate traffic, both contraflow and withflow.
yellow - the line marking the central reservation on a dual carriageway, including the right-hand side of off-on ramps.
red - shoulder lines

Anyone have any good examples of non-UK use?
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Old April 28th, 2010, 01:32 PM   #2
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They're often used on Dutch roads. Not motorways though (I can only think of one location; Interchange Ewijk near the city of Nijmegen).
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Old April 28th, 2010, 02:19 PM   #3
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We use them in CZ on motorways on the middle dashed lane, but AFAIK it is not mandatory anymore...
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Old April 28th, 2010, 04:08 PM   #4
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They are used near the coast for the most part in the Province of British Columbia, Canada. They generally used in No Passing areas and mostly on the centerline only (Some passing areas have them as well). Because the province does get snow, the Ministry of Transportation and Infrastructure conducted an experiment by recessing them into the pavement slightly. This allows the plow blade to pass over them, rather than have it scrape the cat's eye off the pavement.
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Old April 28th, 2010, 04:29 PM   #5
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They are also popular in Poland (DK roads), but they come off the surface too easily.
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Old April 28th, 2010, 11:48 PM   #6
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They are also popular in Hungary on the principal roads.
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Old April 28th, 2010, 11:57 PM   #7
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Cats Eyes
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Old April 29th, 2010, 12:14 AM   #8
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in HR we have them only in tunnels and some viaducts or curves, and sometimes they are led lights, sometimes just catadiopters
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Old April 29th, 2010, 12:15 AM   #9
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I've never seen or heard of these before.

How are they powered? Solar?

I've seen road reflectors and reflective paint, but never these. Seems like a waste of money and resources to me.
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Old April 29th, 2010, 01:40 AM   #10
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Ontario in Canada tried them for about a year on the 403 in Hamilton. i don't know why, but they were pulled last fall or so. In Ontario at least, they appeared to be powered by an electrical conduit that was in-laid into the pavement. I had read somewhere (at least I think i had read somewhere) that the LED's increased the risk of seizure to epileptic drivers -- Does that have any legs?
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Old April 29th, 2010, 02:01 AM   #11
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Quote:
Originally Posted by CptSchmidt View Post
I've never seen or heard of these before.

I've seen road reflectors and reflective paint, but never these. Seems like a waste of money and resources to me.
They are reflectors. I think they got the name "Cat's Eye" because they "look like" a cat's eye in the dark. Not at all certain, though, but that's just my guess. Reflective paint is used where I am too, in addition to the reflectors. In an industrial area, LED lights are used on a central concrete median.
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Old April 29th, 2010, 02:01 AM   #12
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Epileptic drivers? Man, who gives driver license to people with epilepsia?

If something would seizure epileptic people that would be opposite car lights etc. IMO cats eyes ("żabki" - froggies in polish) are a positive.
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Old April 29th, 2010, 02:08 AM   #13
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Quote:
Originally Posted by GrimFadango View Post
Epileptic drivers? Man, who gives driver license to people with epilepsia?

If something would seizure epileptic people that would be opposite car lights etc. IMO cats eyes ("żabki" - froggies in polish) are a positive.
That's news to me. I've heard that the strobe lights on emergency vehicles MAY have triggered seizures in a extreme minority of people, but can't confirm that.

Epilepsy is very controllable now with very few exceptions, so that's no longer a barrier to getting a DL.
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Old April 29th, 2010, 02:45 AM   #14
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Quote:
Originally Posted by CptSchmidt View Post
I've never seen or heard of these before.

How are they powered? Solar?

I've seen road reflectors and reflective paint, but never these. Seems like a waste of money and resources to me.
Conventional cats eyes are merely reflectors. In recent years, solar-powered ones have been developed, some of which LED. Hard-wired ones are rare and I've only ever seen them on airport runways.

Last edited by Gareth; April 30th, 2010 at 02:57 AM.
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Old April 29th, 2010, 03:34 AM   #15
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AFAIK,in Estonia LED ones have been tested on pedestrian crossings,but due to being rather prone to failure & bad weather,these haven't reached wider use.

Reflector cat eyes are more common - most newer,rebuilt highways have them.
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Old April 29th, 2010, 03:41 AM   #16
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In Sweden you can find those cats eyes only at road works at bigger roads like the motorways.
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Old April 29th, 2010, 09:09 AM   #17
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In Israel they are used on almost all intercity roads (especially non-motorway roads, where IMO they are more useful). Usually the outside shoulders have them, but often also the central/lane dividers.

Quote:
Originally Posted by CptSchmidt View Post
I've seen road reflectors and reflective paint, but never these. Seems like a waste of money and resources to me.
As was already mentioned, cat eyes are reflectors. They are great at night, especially on unlit stretches of 2-lane roads. They make an unbelievable difference in such situations. I wish all roads in Ontario used them, but apparently it would be too expensive to make them resistant to snowploughs.

Quote:
Originally Posted by sonysnob View Post
Ontario in Canada tried them for about a year on the 403 in Hamilton.
I've encountered brief sections (about 100m at most) on some rural Ontario 2-lane roads at sharp turns, in the middle. If I remember correctly, they were blue.
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Old April 29th, 2010, 03:37 PM   #18
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In Switzerland there are cats eyes in the pillars at the side of the road. Two dots on the left a vertical line on the right.


The are only reflectors on the road in tunnels. The problem is that the reflectors fall of when you remove the snow in winter.
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Old April 29th, 2010, 04:12 PM   #19
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Quote:
Originally Posted by earthJoker View Post
In Switzerland there are cats eyes in the pillars at the side of the road. Two dots on the left a vertical line on the right.


The are only reflectors on the road in tunnels. The problem is that the reflectors fall of when you remove the snow in winter.
This is exactly the same standard like in Sweden and Germany.
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Old April 29th, 2010, 04:52 PM   #20
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Those are just standard reflectors on the posts though. Does the Swiss Government mount them to the pavement (Cats Eyes) to denote road lines?
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