14-10-2010, 08:02 AM
(10-10-2010, 08:28 PM)interesting_signal Wrote: Here's my attempt at 107A(M) & (W) routes.
146A(M) & (C ) added now too.
Very little to comment upon re 146.
Main:
It is a nonsence to put any comprehensive A/L where the signal is approach released as by definition if the signal is approach locked then there must be a train that could have seen it.
Call-on:
You treated as a normal call-on which is probably what I'd have done. However the plan notes describing its use rather imply that it is a shunt rather than a call-on, just to allow a loco to intrude to be able to runaround rather than a passenger permissive. This I feel is a confusion when judged against NR rules (that would also have provided a MARI for the PL); I think that I'd have added a note and explained either
a) I had treated this as a shunt (to match the description), or
b) I had signalled as the call-on (as defined by the route box) but therefore needed to amend slightly to suit my adopted principles!
Otherwise fine;
I don't see any great advantage / disadvantage re calling 214 so regard these as optional.
If declaring RRI standards (as indeed you have adopted for A/L timing) then to be consistent the two track A/L release would just actually be written "BD clear after BD, BC occ" (since that is what the TASR achieves), but this is really being very picky.
PJW