Re: Signalling in Victoria

[David Langley <del@ancc.com.au>]

Christopher_Martin GORDON wrote:

> : > They will be installing them at Ringwood (No. 2 road was marked today)
> : >
> : > One more interesting thing at Ringwood, for the new set up, the last home
> : > signal on the Up Belgrave Line before the down end points will show the
> : > following:
> : > Top light Red/Yellow/Green
> : > Bottom Light  Red/??????
> : > and a low speed light.
> : >
> : > What would the other colour be on the bottom light?
> : >
> : > There are two possible routes from this signal (once working) to No 2
> : > road, or the new platform 1 (which requires a diverge through the single
> : > compound)
> : >
> : > I would say the diverge would be Medium Speed, and the straight normal
> : > speed.  If the bottom light was yellow, then it would work, if the bottom
> : > light was green then you could show reduce to medium speed.
>
> : Yes medium speed. Either yellow or green. If the road is set into the platform
> : but not out at the up end, then I would expect R/Y but if the departure signal
> : is also cleared then I would expect R/G.
>
> But the bottom light only has two LED thingys.  Ie it can only show
> two colours.  One must be red, the other green or yellow?

Dunno. Wouldn't be the first time the wrong head was installed. Will ask someone who
might know.

>
>
> They are providing four speed trips between this signal and the next one.

For the reasons I outlined above, speed proving.

>
>
> The current signal there shows  red/yellow,  yellow/green, red/red.  (red/red/yellow)
> I spose it must have also show red/green for a move to the city via the down platform
> (which can't be done now)
>
> --
> Chris Gordon
> http://www.ecr.mu.oz.au/~cmgord