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| Barred signal? 10/01/2024 at 11:30 #155017 | |
OJH
6 posts 
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Looking at this photo of Brockenhurst panel and noticed that signal 16 is labelled as a 'barred signal'. I may be missing something obvious but I can't work out what this means - I haven't seen anything similar anywhere else. Any help appreciated. Last edited: 10/01/2024 at 11:33 by OJH Reason: None given Log in to reply |
| Barred signal? 10/01/2024 at 14:16 #155018 | |
Giantray
330 posts |
A barred signal is usually one that a Handsignaller cannot be positioned at due to insufficient clearance at the signal. You will find also, if it has an SPT (Signal Post Telephone), the signaller cannot ring it because anyone answering it would be in a dangerous position, again lack of clearance. Barred signals were common place in the London Bridge ASC area and on multiple lines elsewhere. Since London Bridge was resignalled, there are only SPTs on platform starting signals, all other signals have no SPTs. Because of mobile phones & GSM-R they are the main methods of callinga signaller in new resignalled areas.
Retired Professional Railwayman (1981-2023); Pway & S&T (1981-88); Former Signalman/Signaller/ Signalling Trainer (1989-2023) [AB, TCB, Mechanical, NX, WestCad, Hitachi SARS]; Railway Historian (esp.SER, LCDR); Member of The Permanent Way Institution.. Last edited: 10/01/2024 at 14:17 by Giantray Reason: None given Log in to reply The following users said thank you: OJH, flabberdacks, jc92 |
| Barred signal? 11/01/2024 at 07:59 #155030 | |
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clive
2738 posts |
Barred signals are at least sometimes indicated by the letter L, T, or X on the white diamond sign; in the past these have been yellow and I'm sure I've also seen light blue. See https://www.railsigns.uk/sect9page2.html . Log in to reply |
| Barred signal? 11/01/2024 at 14:09 #155035 | |
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OJH
6 posts
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Ah very interesting. I knew about those X marked white diamond signs but didn't know they were called barred signals. Maybe a bit odd that a signal in a seemingly open space would have such a restriction on it - even if the signal itself is squeezed between running lines, I would have thought the SPT could possibly have been placed on the cess across the line.
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| Barred signal? 12/01/2024 at 09:06 #155038 | |
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clive
2738 posts |
I hadn't heard the term before this thread, so don't take that as gospel. A driver should be able to get out of the cab and walk to the SPT without crossing any other tracks which might, after all, have trains running on them, and without being squashed between their train and one on the next track. If that can't be done, they shouldn't be using the SPT unless it's clear that it's safe to do so. Back before the days of GSM and everyone carrying a mobile, the rule for these plates, if I remember correctly, is that the driver was not allowed to get out of the cab to use the phone unless another driver had pulled up and told them to do so. The idea being that the other driver would have been stopped at a safe signal and given the message to pass on. Log in to reply |
| Barred signal? 12/01/2024 at 09:22 #155039 | |
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apache668
24 posts |
It's been a while since I visited Brockenhurst (2021), but I recall the signaller mentioning 16 having a restriction of some description so that could be it? If memory serves me correctly, I think it's restricted to single yellow only? Might be completely wrong with that however. A bar can also be for a specific route (route-barring) so could be that too. Basically... What it is driver... We uh.... Log in to reply The following user said thank you: TUT |
| Barred signal? 14/01/2024 at 09:39 #155061 | |
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Giantray
330 posts |
clive in post 155038 said:I hadn't heard the term before this thread, so don't take that as gospel.London Bridge ASC had several barred signals in the London Bridge Area on the multiple lines. They had a White Diamond with a T and a white light. The white light lit when the signaller rang the phone. The signaller had to make sure the adjacent line was clear before using the SPT to contact a Driver. A Driver would never get down to answer the SPT unless the white light was lit. When London Bridge migrated to TBROC, the only SPTs left were those on the end of Platforms. GSM-R is now the preferred method of communications between Drivers and Signallers, and thus it was only deemed necessary to provide SPTs at Platform Signals where Drivers are likely to set up their radios and could contact signallers if they don't. Of course with nobile phones, should a GSM-R fail enroute, the the Driver will use a Mobile Phone to contact a Signaller. On Track staff will either have a mobile GSM-R phone or a normal company mobile phone. Retired Professional Railwayman (1981-2023); Pway & S&T (1981-88); Former Signalman/Signaller/ Signalling Trainer (1989-2023) [AB, TCB, Mechanical, NX, WestCad, Hitachi SARS]; Railway Historian (esp.SER, LCDR); Member of The Permanent Way Institution.. Last edited: 14/01/2024 at 09:47 by Giantray Reason: None given Log in to reply |
| Barred signal? 14/01/2024 at 09:50 #155062 | |
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Giantray
330 posts |
apache668 in post 155039 said:It's been a while since I visited Brockenhurst (2021), but I recall the signaller mentioning 16 having a restriction of some description so that could be it? If memory serves me correctly, I think it's restricted to single yellow only?Restriction of signals to specific aspects is not barring. Restricting aspects can be done for various reason that involve a Technician and Signalleer carrying out a specfic process and completing an RT3187 form. Also some signals will be restricted by design. Post has attachments. Log in to view them. Retired Professional Railwayman (1981-2023); Pway & S&T (1981-88); Former Signalman/Signaller/ Signalling Trainer (1989-2023) [AB, TCB, Mechanical, NX, WestCad, Hitachi SARS]; Railway Historian (esp.SER, LCDR); Member of The Permanent Way Institution.. Last edited: 14/01/2024 at 09:59 by Giantray Reason: None given Log in to reply |