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Railway Knowledge Needed!

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echokilo | 11:56 Sun 27th May 2012 | How it Works
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Please can anyone tell me what the attached photo shows? It was taken on the tracks at Birmingham New Street. Also can anyone tell me what the large flat yellow objects are that are sometimes positioned in the middle of the tracks?

https://picasaweb.goo...7595/RailwayQuestion#

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It's the bit in the middle of the tracks I am referring to please!
It's not working
nothing comes up on that link
Think it might be one of these

http://en.wikipedia.o...omatic_Warning_System
Thats for the Yellow objects in the Middle of Tracks
Question Author
Please try the link below again now (had not made it public before!)

https://picasaweb.goo...E#5747164605145796018
Hubby thinks it's to send data from the train to the signal box or vise versa.
Question Author
Thanks for your help everyone ............... are there any websites anyone can point me to which give info on railway hardward/features at all?
I thought you said it was yellow
Now that's a question for the train fanatic (nutter) on Eggheads. Can't remember his name though.
Question Author
The photo is of a grey gridlike object - and I asked ALSO, if anyone knew what the yellow objects are which are often located in similar positions ..... sorry to confuse!
Nothing showing on the Picasa link, but definitely sounds like the AWS. There's loads of safety and monitoring equipment on the tracks, this would be more noticeable than others.
Ah, I see. Sorry.
The grid like object is TPWS, some info here.

http://www.rail-reg.g.../server/show/nav.1559
The metal grid limits the train's speed of approach. Train Protection & Warning System http://www.railsigns....info/tpws1/tpws1.html and here

The yellow ramp alerts the driver to the signal aspect ahead. Automatic Warning System. http://www.railsigns....k/info/aws1/aws1.html
The railsigns website may answer other queries on siganalling / control hardware.
I think that it's Chris on Eggheads, Maggie.
I am sure that Buenchico will know......
Sorry echo, your link says page not found.
echo's next link works, tony
Just found that out boxy.

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