How To Read Junction Signals - Weardale and Teesdale

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How To Read Junction Signals - Weardale and Teesdale

Unread postby FHRob » Fri Feb 03, 2017 6:15 pm

The attached screenshot shows a junction signal. There's a green home signal, but which track does it pertain to?

Rob :D
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Re: How To Read Junction Signals - Weardale and Teesdale

Unread postby Metrarailfan » Fri Feb 03, 2017 8:43 pm

Oh my.
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Re: How To Read Junction Signals - Weardale and Teesdale

Unread postby thebigroyboyski » Sat Feb 04, 2017 6:13 am

Could you post a screenshot of the track layout ahead and i'll see if I can help.
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Re: How To Read Junction Signals - Weardale and Teesdale

Unread postby OldProf » Sat Feb 04, 2017 10:25 am

I'd suggest, as usual, a glance at the route's user's manual (pp. 13-14), but in this case, it just provides a good laugh -- looks like someone got carried away. Perhaps one should just rely on the Tab key and hope for the best?
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Re: How To Read Junction Signals - Weardale and Teesdale

Unread postby peterhayes » Sat Feb 04, 2017 5:02 pm

These are typical junction signals and give an indication which route is green to go.
My interpretation: The left rail line is stop, second rail line to platform OK to go, mainline stop, outer 2 lines stop. But I could be wrong! !*roll-laugh*!
Its explained here http://www.railsigns.uk/sect6page1/sect6page1.html
Peter749006 would probably know the definitive answer he usually posts on UKTS.
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Re: How To Read Junction Signals - Weardale and Teesdale

Unread postby FHRob » Sat Feb 04, 2017 5:06 pm

thebigroyboyski wrote:Could you post a screenshot of the track layout ahead and i'll see if I can help.


Let me know if this helps, the train is outside Bishop Auckland Station.
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Re: How To Read Junction Signals - Weardale and Teesdale

Unread postby FHRob » Sat Feb 04, 2017 5:11 pm

peterhayes wrote:These are typical junction signals and give an indication which route is green to go.
My interpretation: The left rail line is stop, second rail line to platform OK to go, mainline stop, outer 2 lines stop. But I could be wrong! !*roll-laugh*!
Its explained here http://www.railsigns.uk/sect6page1/sect6page1.html
Peter749006 would probably know the definitive answer he usually posts on UKTS.
pH


Hi Peter:

I think you're correct here. What puzzles me is the highest signal here is red, which I thought governs whether the train should proceed. One of the instruction manuals discusses this situation, and seems to indicate the highest placed signal rules.

I'll try Peter749006 as you suggested.

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Re: How To Read Junction Signals - Weardale and Teesdale

Unread postby thebigroyboyski » Sun Feb 05, 2017 5:21 am

FHRob wrote:
thebigroyboyski wrote:Could you post a screenshot of the track layout ahead and i'll see if I can help.


Let me know if this helps, the train is outside Bishop Auckland Station.


I've not got the route but if the crossing ahead is a double slip I read them, from left to right,
Line 1 stop, Line 2 clear to platform, Line 3 main stop and distant also isn't clear as a train is in that platform.
The other 2 are for the other track to your right.
With British semiphores the highest is the main and the lower ones are for the tracks leading off from it.
Semiphores are a bit before my time as they were mostly getting pulled up on my local line when I was young but there is still some on a local secondary main line near my home.
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Re: How To Read Junction Signals - Weardale and Teesdale

Unread postby ChrisOnline » Sat Feb 11, 2017 11:29 am

Just saw this post, and I wanted to make a couple of comments . . .

1.I think the main thing for Americans to get their head around is that the highest signal does NOT represent and overall "approval or denial", but the MAIN route. Signals to left and right indicate diversions FROM that route

Here's the simplest form of this:
signal.jpg

. . . which is saying, the main line is straight ahead, but you are going to turn off to the left on a secondary line (maybe a loop, a branch, or less likely, a siding [because that is more likely to be controlled by a ground signal])

The original example posted is merely a more complicated version of the same principle.

2. But the other point I think is important is that signals (at least, in the UK) are not there to EDUCATE the driver (engineer) about the route. His detailed knowledge of the route is implicit (he's not allowed to drive it without it). The signals are merely to grant permission to proceed, and his prior knowledge of the route will mean he already knows what each signal will relate to.

Chris
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