one TN said:
I'm not going to argue about what I did or didn't say. The original post is there for everyone to see and to make their own minds up about.
Indeed, so why argue in the first place? I suggest we leave it.
one TN said:
Forgive me, but were you basing your statement on what Simsig does or do you have railway experience?
My full time job is producing formally approved signalling simulations for Network Rail. That involves working through the interlocking data - control tables, aspect sequence charts, etc. Believe me when I say signallers are fussy - and none have ever suggested that our simulations are wrong in terms of flashing yellows. If you let me know which area you work (by email if you prefer) I might have the data for that area at work and I can give you exact details of what the sequence is, where the trigger is, etc.
So, in answer to your question, I have a lot of railway signalling knowledge. You see the lamps on sticks; I see the logic driving those lamps.
Geoff M.
[EDIT]
dvn1357 said:
Is this always the case, looking on Exeter Simsig, there is no flashing amber from DML > Down Torbay where the line speed drops from 60>40, which is 2/3 although it appears to use conventional approach control! Unless this is a fault with Simsig?
dvn1357 said:
Well, being local i'm pretty sure! After the class 45 sped through at about 50 onto the torbay branch with no approcah locking it must be the flashing yellow system!
Okay, point noted. I'll let him know. Thanks.
Doing "about 50" on a 40mph turnout?!
Geoff M.
[EDIT]
Um... that's weird. It was supposed to be two posts and it treated it as an edit!
[EDIT]
Ok, I understand the double posts now.
I have a retraction to make. The release trigger point I mentioned is only when the flashing yellows haven't been active long enough for the driver to see them - ie it only applies under certain circumstances, not all circumstances. So while the special track circuit I mentioned DOES exist at ALL flashing yellow junctions (and near the AWS ramp), it is not used all the time. Apologies for the confusion.
Geoff M.