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Post by metrider on Dec 28, 2017 19:17:26 GMT
Today (at the tail end of the south of Wembley Park suspension on the Met), I caught an Uxbridge service on platform 2 at Wembley park. The train had just exited the depot. As the train pulled into the platform, there was a small flashing amber light on the front of the train that was continually flashing (it was beneath the headlamp on the right hand side but it looked like there was a similar light on the left, which was off). I was reminiscent in of a car indicator light. What does that light signify? (I doubt that "Mirror, Signal, Manoeuvre" is relevant  ) |
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Post by Deleted on Dec 28, 2017 19:30:41 GMT
It depends on the train. On non ato trains this means that the train is moving in unprotected mode, so the tripcock is isolated.
On ato trains the light is active when the train is running in forward mode (also known as restricted manual) where it is restricted to 10mph.
The secind one is more likely as it was exiting a depot which is when forward mode is mostly used.
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Post by Deleted on Dec 28, 2017 21:35:46 GMT
But would it really be running in restricted manual?
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Post by metrider on Dec 29, 2017 7:10:13 GMT
Thanks, but I suppose that also raises the question - ' What is Forward Mode?" '. I presume that it would be necessary to negotiate the exit from Neasden Depot? (and be left on until the train berthed in platform 2 at Wembley Park, simply because that was a convenient place to switch out of Forward mode?).
As the train was going into service and was on a line that could have been shared with other trains that were in service, I can't imaging that the train would have been in 'Unprotected mode' (I'm assuming that there would be strict procedures to follow in such a case?)
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Post by philthetube on Dec 29, 2017 7:28:16 GMT
As it was a MET train it would be running i n Restricted manual, which is the correct way to drive in Depoat or Sidings, there is no ATO operating on the Met yet apart from tests when lines are closed to passenger operation, and none of that yet in the Wembley area.
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Post by Deleted on Dec 29, 2017 9:19:55 GMT
As it was a MET train it would be running i n Restricted manual, which is the correct way to drive in Depoat or Sidings, there is no ATO operating on the Met yet apart from tests when lines are closed to passenger operation, and none of that yet in the Wembley area. Correct me if I am wrong, but surely restricted manual would only be enabled once ATO is in operatation? |
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Post by Dstock7080 on Dec 29, 2017 9:38:21 GMT
Correct me if I am wrong, but surely restricted manual would only be enabled once ATO is in operatation? RM Restricted Manual is available on all S Stock and has been since their introduction, for movements requiring a maximum speed of 9mph (S Stock will hold the speed st 9mph). The tripcock is still operational in RM mode, while under conventional signalling. A train conducting the Passing Signals At Danger procedure or anytime the tripcock has been operated, are required to select RM mode to gain movement. The orange light will flash on software updated ATC fitted S Stock trains. On previous software version trains, no external visual aid is currently given. |
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Post by londonstuff on Dec 29, 2017 15:38:01 GMT
How many trains have been retrofitted so far? I'd have thought the S7s would have been fitted first, given ATO migration area 0.5 is at Hammersmith?
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rincew1nd
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Post by rincew1nd on Dec 29, 2017 15:58:36 GMT
How many trains have been retrofitted so far? I'd have thought the S7s would have been fitted first, given ATO migration area 0.5 is at Hammersmith? AIUI because the new signalling system is spreading from Hammersmith across the top of the Circle there is a desire for some S8s to be fitted. Presumably this is so that the new signalling can be tested to ensure it is able to cope with the differing train lengths and/or stopping points. |
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Post by Dstock7080 on Dec 29, 2017 16:35:45 GMT
How many trains have been retrofitted so far? I'd have thought the S7s would have been fitted first, given ATO migration area 0.5 is at Hammersmith? AIUI because the new signalling system is spreading from Hammersmith across the top of the Circle there is a desire for some S8s to be fitted. Presumably this is so that the new signalling can be tested to ensure it is able to cope with the differing train lengths and/or stopping points. The plan is to have 53 S7 converted by 'go-live day' of 27 May, but the C&H actually only uses 33 trains at peak times, so this would be the minimum requirement. All S8s would need to be completed by 2 September, S7s could be restricted to District (main-line) work for a while longer. At the end of November (latest figures available) 20 S8s and 27 S7s were returned or in works. |
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Post by t697 on Dec 29, 2017 16:39:01 GMT
Just to add to that, the S8s are being done in parallel with S7s to spread them out, ensure they are done by September and not affect the availability for normal service in the meantime.
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Post by MoreToJack on Dec 29, 2017 18:29:11 GMT
2 September is wildly optimistic from what I'm being told... 😉
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Post by Deleted on Dec 29, 2017 20:32:45 GMT
They are starting next week by the looks of the timetable notices appearing recently
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Post by jamesb on Dec 31, 2017 11:32:49 GMT
Yesterday evening, I saw an S8 car with a steady (very bright) white light and yellow light both on at Liverpool Street. It looked like the carriage with the low level passenger emergency alarm in the area for wheelchairs.
I (think) that I didn't observe a passenger alarm getting reset, but when the doors closed, both the yellow light and the white light extinguished, and the train continued to Aldgate.
I was curious that the white light went out when the doors closed, not when the alarm was manually reset as I have observed in other stock.
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Post by MoreToJack on Dec 31, 2017 12:22:13 GMT
Yesterday evening, I saw an S8 car with a steady (very bright) white light and yellow light both on at Liverpool Street. It looked like the carriage with the low level passenger emergency alarm in the area for wheelchairs. I (think) that I didn't observe a passenger alarm getting reset, but when the doors closed, both the yellow light and the white light extinguished, and the train continued to Aldgate. I was curious that the white light went out when the doors closed, not when the alarm was manually reset as I have observed in other stock. This is a common fault. The white ODILs sometimes light up spuriously with the orange, with no PEA activated. No indications will show in cab and it is not safety critical. |
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Post by jamesb on Dec 31, 2017 14:37:12 GMT
Yesterday evening, I saw an S8 car with a steady (very bright) white light and yellow light both on at Liverpool Street. It looked like the carriage with the low level passenger emergency alarm in the area for wheelchairs. I (think) that I didn't observe a passenger alarm getting reset, but when the doors closed, both the yellow light and the white light extinguished, and the train continued to Aldgate. I was curious that the white light went out when the doors closed, not when the alarm was manually reset as I have observed in other stock. This is a common fault. The white ODILs sometimes light up spuriously with the orange, with no PEA activated. No indications will show in cab and it is not safety critical. Ah, that makes sense. The white light was very bright. 8 of them flashing every time a train is ready to depart will certainly be noticed! |
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Post by Dstock7080 on Dec 31, 2017 15:23:16 GMT
The white light was very bright. 8 of them flashing every time a train is ready to depart will certainly be noticed! A steady white light on all cars will indicate ready-to-depart. |
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Post by Deleted on Dec 31, 2017 16:51:02 GMT
They should come with a epilepsy warning
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Post by Chris M on Dec 31, 2017 17:00:25 GMT
They should come with a epilepsy warning Photo-sensitive epilepsy is triggered by frequency not brightness. |
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Post by t697 on Dec 31, 2017 17:04:06 GMT
At risk of being a bit boring, the flash rate is selected to avoid the photo-sensitive epilepsy.
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Post by Deleted on Dec 31, 2017 17:16:29 GMT
I wasnt being serious
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