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What is this sign?
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bussnapperwm
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Last lap of the race!
Seriously, something to do with clearances maybe?
Seriously, something to do with clearances maybe?
The only clearance signs I know of are no refuge and limited clearance.
This one has me puzzled..
Pete_uk
Established Member
Yeah, some kind of datum Point perhaps
We live and learn.
I’ve always treated a diamond version of this sign as an OHL stanchion indicator?
It's in 3rd rail land.
Next to Norris Skips ?
That’s them, although I’m sure they’re disappearing!
It doesn't make a difference how it's orientated. Software differentiates between the black and the white, essentially enbling the application of a cartesian coordinate at the central point.
Not noticed them before, they are quite new. Although not been down past Cray for a few months. I suspect that they are going to carry out some works. The bridges have been renewed and I believe there will be some housing going in towards Swanley. New housing at Cray too. Maybe there has been some shifting of the banks.
jamesst
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They've appeared at various locations on the Merseyrail network aswell
185143
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The location is Kirkby (Merseyside) on the Wigan bound platform (facing towards the Liverpool platform) if it's of any interest?
ElectroSoldier
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They are doing a lot of survey work on Merseyrail at the minute.
a_c_skinner
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Arnside has recently got one on the Lancaster bound platform buildings.
Merle Haggard
Established Member
Travelling on the WCML I have seen the diamond shaped ones and accept that they are used for laser scanners.
However, I've also noticed the square ones (like limited clearance signs, but obvs blue instead of red) in the cess and near to and facing a foot crossing. Two examples are; immediately South of Stoke on the main line; lon the same route towards Colwich. These have lettering on both the white squares, and the upper left one might say 'WARNING'. Reading them is a test for my eyesight at speed, but what is the lettering? Are they certainly for lasers?
However, I've also noticed the square ones (like limited clearance signs, but obvs blue instead of red) in the cess and near to and facing a foot crossing. Two examples are; immediately South of Stoke on the main line; lon the same route towards Colwich. These have lettering on both the white squares, and the upper left one might say 'WARNING'. Reading them is a test for my eyesight at speed, but what is the lettering? Are they certainly for lasers?
civ-eng-jim
Member
Blue ones indicate limited clearance but there is a position of safety on the other side.
Merle Haggard
Established Member
Thank you for the quick reply.
ER! I hope you're not a driver
ER! I hope you're not a driver
That'll teach me to respond to a post without reading the whole thread, I saw @civ-eng-jim 's post and got trigger happy
That'll teach me to respond to a post without reading the whole thread, I saw @civ-eng-jim 's post and got trigger happy
Er, now I'm confused. Your response was correct.
Red/White is limited clearance. Blue/White is no refuges.
What can also happen is that you get signs on both sides
Don't think I have seen any no refuges signs on both sides yet, but it wouldn't surprise me.
Have you got any of the newer 'yellow warning triangle' limited clearance/no refuges signs without an accompanying 'checkerboard' sign yet? Every one of the new yellow signs up here that I've seen has also had the classic signage right next to it. The old ones can convey their meaning from a fair distance away and everyone knows what they mean.
Have you got any of the newer 'yellow warning triangle' limited clearance/no refuges signs without an accompanying 'checkerboard' sign yet? Every one of the new yellow signs up here that I've seen has also had the classic signage right next to it. The old ones can convey their meaning from a fair distance away and everyone knows what they mean.
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