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Post by Deleted on Aug 16, 2014 20:26:49 GMT
I notice that there are two stopping boards at Northwood northbound, the second of which is under the bridge and says, I think, S|R. Does anybody know what this is for?
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Post by abe on Aug 16, 2014 20:50:19 GMT
It's a reversing mark for S stock. Another example is platform 5 at Harrow-on-the-Hill, which has an S|S mark for the regular stopping place, and then an S|R mark a little further in for trains reversing into the siding. I presume that this is because the longer S stock need to pull forward to clear either the points or the track circuit to allow the route to be set for the siding.
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Post by Deleted on Aug 16, 2014 21:03:09 GMT
I see. Thanks very much  I had suspected it could be something like that, it just didn't strike me that Northwood NB was a particularly short platform. Thanks for the clarification |
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Post by memorex on Aug 30, 2014 20:58:38 GMT
I believe that this is actually because of signal sighting issues with the wrong-road starters, as opposed to releasing the track circuit. I'm certain that both at Northwood NB and Harrow P5 SB a train fully berthed at the S|S stopping mark occupies the track circuit only.
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Post by version3point1 on Sept 19, 2014 12:39:19 GMT
I believe that this is actually because of signal sighting issues with the wrong-road starters, as opposed to releasing the track circuit. I'm certain that both at Northwood NB and Harrow P5 SB a train fully berthed at the S|S stopping mark occupies the track circuit only. This is correct. |
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I had suspected it could be something like that, it just didn't strike me that Northwood NB was a particularly short platform. Thanks for the clarification 
