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2009 Mainline layout
#1
Dear all,

Here with i have attached the 2009 attempted layout,
Your comments and corrections please.

Thanks
DEV


Attached Files
.pdf   IRSE (Main Line) Layout 1 Year 2009 (Unsignalled) Version 3.pdf (Size: 2.11 MB / Downloads: 184)
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#2
(19-09-2013, 10:59 AM)MEDEV Wrote: Dear all,

Here with i have attached the 2009 attempted layout,
Your comments and corrections please.

Thanks
DEV

A couple of points in no particular order of severity:

As a starter from a terminal platform, 430 signal would not require an overlap.
You have 439 B reading up to 447 signal via 607 R as. 611 are switch diamonds and hence there is no move over them from the up main to take you down the branch. The move should be over the up branch and there needs to be another signal before 614 points to protect the single line.
428 has a move only up to a fixed red, so why have you shown it as a three aspect signal capable of showing G?
The spur is 40km/h so the arrangement with 430 being the distant for 428 would
be incredibly over braked.
The section of the plan at A, F and G has the gap in the line so that you can show the first and last signal on this extra section with the dimension to / from it.
You have shown 434 as having a three lamp GPL whereas it would be a two lamp position lit associated with a main aspect.
In the normal direction on the main line, you have put 460 as a shunt signal which would be a facing shunt for mainline moves. Try to avoid facing shunts and have te run round move read up to an existing main signal.
You have out a LOS between 433 and 439 for the run round move to stop at. However, you also have a move from 433 up to 439. This would never be able pass the LOS. The LOS is unnecessary as the run round move could be set to 439. It does not have to travel to 439 and can go just as far past 424 as it needs to order to then be signalled back.
Why have you put a flashing yellow on 433? The turnout speed is only 40km/h.

Peter
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