Re: Signalling in Victoria

[L & D <daisyw@ozemail.com.au>]

Christopher_Martin GORDON wrote:

> Ok, just a couple more questions about 2 position signalling.  The numbers on
> the signal posts are usually the lever number, and where there are many levers
> the first lever number is on the post.  Is this correct?

No  if you check some of the diagrams like the old ones on the Upfield and Epping
lines you can see where the number would start at one Signal box and continue for
sometime an example Merri had posts 44,45,46.   Then Thornbury had post 1 then the
numbers continued through to Bell's down advance starter no 16  Again another
example was post 5 at Regent through to Keon Parks down advance starter post 32.

> If so then in places
> like Sunbury the lever (switch) number has no relationship with the post
> number.
>
> Disc and dawf signals. Most sidings and wrong line moves have/had disc
> signals, if you have a colour light signal is it called a disc,

I don't know now,  but there were 3 types of fixed signals  Semaphore, Light and
disc signals.It used to depend on where the color light signal was if on it's own,
then it was a dwarf signal on a post with other signals then a low speed signal..



> or a two
> position dawf?
>
> Eltham has two homes (on for each road) and a dawf/disc for the sidings, this
> is a little like the Showgrounds (ie it has a 'siding' sign and it normally
> off, but shows yellow for moves into the sidings), I spose in the days of
> semaphore signals this would have been a disc.
>
> Now three position signalling.  Where you have a signal that shows red/red,
> yellow/red & green/red it is three aspect signalling?
>
> Where you have red/red, red/yellow, yellow/green & green/red it is four aspect
> signalling?
>
> Where you have say a junction and the signal shows red/red, yellow/red &
> green/red for one route or red/red, red/yellow & red/green apart from the
> being a home signal would you say the signal has 5 aspects?
>
> Signals the clear in the following order: red/red, red/yellow, yellow/red,
> yellow/green, & green/red (I think that is right) it has the yellow/red aspect
> because a full overlap is provided after the train has past some point, but
> the next signal is still red/red.
>
> All dawf signals are three position (in three position signalling area) but
> some only show two aspects.  The signals at either end of the centre road of
> Clifton Hill are three aspect with trip levers.  Are these dawfs, or home
> signals, or something else?
>
> Transition from Two position signalling to three position, sometimes it is
> like Greensbourgh where there is a home to post X and then post X is a three
> position signal.
>
> Or like St Albans where you have a home signal, repeating, then a three
> position home.  I think the repeating signal is like a distant (but with a
> yellow marker).  Is that right?
>
> What colour are the arms on a semaphore repeating signal?  I know of only one
> semaphore repeating that was at Maldon Junction any I have no idea what colour
> the arms were.  The top arm was fixed at yellow, and the bottom yellow or
> green.
>
> Well that's all I need to know for now (until I am totally confused again)
>
> Regards,
>
> --
> Chris Gordon
> http://www.ecr.mu.oz.au/~cmgord