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55g
Sept 4, 2005 16:02:52 GMT
Post by Colin D on Sept 4, 2005 16:02:52 GMT
Is their an equvalent rule for ATO trains if they get held at what would be an automatic signal on any other line?
And is that rule still 55g?
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55g
Sept 4, 2005 17:23:28 GMT
Post by piccadillypilot on Sept 4, 2005 17:23:28 GMT
And is that rule still 55g? Now someone's dating themselves.  Rule 55 went out a looooong time ago. It's changed in the 1969 LT Rule Book and it changed when the 1972 Book came in on BR. There is still a similar procedure, but what the rule number is I don't know. |
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55g
Sept 4, 2005 18:50:43 GMT
Post by nutterathome on Sept 4, 2005 18:50:43 GMT
I don't know what the rule number is but the procedure is still basically the same with a slight difference.
Usual thing, wait 2 minutes then proceed at caution etc. however, the Controllers and Signalman can see exactly what's going on and for the sake of an argument we will use the 'track circuit failing' scenario. This is how I deal with things in order to prevent extended delays but it does require the T/Op to co-operate and in most cases (99%) they do.
The T/Op will get a zero target speed approaching any Colour Light Signal (CLS) or Block Marker Board (BMB) where there is a failure. Identify the Signal and inform T/Op. Failure from CLS-CLS CLS-BMB BMB-BMB or BMB-CLS. Identify location of train. signal No. Train No. etc. Authorise to proceed in Restricted Manual (RM) this is 8km, on leaving the effected area, the train will pick up code at a CLS or BMB and this will be displayed on the DTS screen as 'ATP Code Present' with this displayed the T/Op will select Coded Manual (CM) and proceed to the next station where ATO can be selected.
This Rule whereby the Signalman authorises T/Ops to pass a CLS or BMB was only introduced about a year ago and was specificaly designed for Semi Autos but has been adapted for use in Auto areas. Permission is given by Train Radio hence the requirement to ask so many questions before giving the Authority to proceed.
It remains the responsibilty of the T/Op to 'look out for obstructions on the track'.
Simple really.
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55g
Sept 4, 2005 22:54:40 GMT
Post by igelkotten on Sept 4, 2005 22:54:40 GMT
It is intersting to compare the procedure described above to the Stockholm Metro procedures for passing signals at danger. We operate on a cab signalling or ATP system, so I suppose you could say it is the equivalent of coded manual, and permission to pass signals at danger are (and have always) been granted over the train radio, which by the way is on an open channel.
Basically, line control says to the train that "Train 24-21, you are permitted to pass signal 2103 at red", which the driver repeats, "Train 24-21 is permitted to pass signal 2103 at red", which is acknowledged by line control "That is correct, 24-21" and then you pass the signal.
On the green line, you also have to get permission to switch your onboard ATP system over to "permissive mode working", which is granted in a similar manner. With ATP signalling in permissive mode, you have to recieve two consecutive and correct track circuit data packages before you can start travelling at linespeed again. On the older cab signalling system, you can go at linespeed as soon as you enter a track circuit with a correct code.
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55g
Sept 7, 2005 17:31:35 GMT
Post by Colin D on Sept 7, 2005 17:31:35 GMT
Ouch, that hurt PP  , but then it has been a loooooong time since I was a dedicated employee  ;D. Anyway thanks for the responses, it's nice to keep up with these things |
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Tom
Administrator
Signalfel?
Posts: 4,196 
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55g
Sept 7, 2005 21:07:46 GMT
Post by Tom on Sept 7, 2005 21:07:46 GMT
Basically, line control says to the train that "Train 24-21, you are permitted to pass signal 2103 at red", which the driver repeats, "Train 24-21 is permitted to pass signal 2103 at red", which is acknowledged by line control "That is correct, 24-21" and then you pass the signal. And then the driver hears a loud crunch... bit like trying to apply the rule past WER1052. |
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, but then it has been a loooooong time since I was a dedicated employee 
;D. Anyway thanks for the responses, it's nice to keep up with these things
