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| Drawing up to the starter signal to clear a subsidiary route Yesterday at 10:32 #160340 | |
jnjkerbin
15 posts |
Playing Rugby Central sim and came across a scenario that I was curious about. In the attached screenshot, 5N01 is going into Kings Heath. It's arrived from the south and come to a halt at the London end of P3, and being a short train, it isn't occupying the track circuit immediately in the rear of the starting signal. As a result the shunt signal hasn't cleared. In SimSig, the train will draw up towards the starter, occupy the track circuit and the subsidiary aspect clears to allow the train into the depot. How would this work in real life? Would the driver need to phone the signaller for authorisation to draw up towards the starter (in case a conflicting move has been signalled in from the country end)? Or would there be some local arrangement, as I imagine this can't be an uncommon issue. 
Post has attachments. Log in to view them. Last edited: Yesterday at 10:32 by jnjkerbin Reason: None given Log in to reply |
| Drawing up to the starter signal to clear a subsidiary route Yesterday at 13:26 #160342 | |
jc92
3719 posts |
I suspect you'd have a local arrangement/understanding to stop in a defined location if booked into the sidings. IRL the driver would need to ask for permission to make any additional movement once he's come to a stand in the platform as he doesn't know if something has been signalled on top of him from the other direction for instance. "We don't stop camborne wednesdays" Log in to reply |
| Drawing up to the starter signal to clear a subsidiary route Yesterday at 15:32 #160344 | |
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Stephen Fulcher
2105 posts 
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This is deliberate in the core code otherwise the train would never move.
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| Drawing up to the starter signal to clear a subsidiary route Today at 01:40 #160345 | |
drew
80 posts |
Just speculating from a driver perspective generally, if not as a UK driver specifically. If you knew you were going back the way you came, you’d pull up towards the arrival end unless there was a compelling reason not to. If you were at the far end, you’d probably wait for the road to clear before you moved off, unless there was a local procedure that said move up to the departure end first. SimSig seems to deal with the problem. Does the train have to go to the far end (is that where the exits are, for example), or could the timetable have been written to stop at the near end? Log in to reply |
| Drawing up to the starter signal to clear a subsidiary route Today at 08:41 #160346 | |
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Jan
920 posts
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Stephen Fulcher in post 160344 said:This is deliberate in the core code otherwise the train would never move. In theory you could ask the player to use the "Shunt forward" option in the train list, and instead of automatically drawing up to the signal when that situation is detected, a "Shunt forward" option could be added to the "standing at red signal" telephone call. Two million people attempt to use Birmingham's magnificent rail network every year, with just over a million of them managing to get further than Smethwick. Log in to reply |
| Drawing up to the starter signal to clear a subsidiary route Today at 11:46 #160347 | |
flabberdacks
675 posts |
I feel like the subsidiary not coming off once the train is timed to a stand no matter how far down the platform they are is a bit silly. In SimSig, I see it a bit at terminal stations with multiple track circuits. Requires the loco or short train to walk up the platform a bit before they hit the berth track, when the signal then clears. Seems strange. Log in to reply |
| Drawing up to the starter signal to clear a subsidiary route Today at 14:47 #160348 | |
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chrisdmadd
260 posts |
jnjkerbin in post 160340 said:Playing Rugby Central sim and came across a scenario that I was curious about.It happens quite often with main aspect reds not clearing for various reasons too. Doncaster P3 is an example, if a 9 car train stops at the very south of the platform and then for whatever reson has to then go North out of the station, the signal wont clear until it is approached. The driver contacts the signaller, the guard and the platform staff and a clear understanding is met. Normally, the dispatchers will have to actually dispatch against a red, having had the authority from the signaller and the promise that the signal has been set! The driver then approaches cautiously and awaits its clearing once the track circuit is activated. Last edited: Today at 14:48 by chrisdmadd Reason: None given Log in to reply |
| Drawing up to the starter signal to clear a subsidiary route Today at 15:49 #160349 | |
9pN1SEAp
1210 posts |
I guess inside SimSig the SimDrivers are just checking on Traksy rather than going through all that rigmarole ;-)
Jamie S (JAMS) Log in to reply |
| Drawing up to the starter signal to clear a subsidiary route Today at 17:14 #160350 | |
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jc92
3719 posts |
9pN1SEAp in post 160349 said:I guess inside SimSig the SimDrivers are just checking on Traksy rather than going through all that rigmarole ;-)IIRC (and it would've been ages ago) it used to be the opposite way round until it was raised as a bug because it effectively produced a terminal race condition unless the train list was used. It then changed to its current behavior to avoid that. "We don't stop camborne wednesdays" Log in to reply |