Re: [SYD] Central Yard signal SY54

[signal_spotter@my-deja.com]

>
> > Could be a subsidiary shunt if it showed yellow or a Low Speed if it
> > showed green, although the latter is generally mounted in the bottom
> > head.
>
> The signal in question, like the other running signals in Sydney Yard
> north of Cleveland St, is a single-light-indication type. As far as I
> can recall on a quick mental scan, none of the single-light signals in
> Sydney Yard are fitted with low speed indications.
>
As the photo only showed one head I assumed it was DLCL. In SLCL then
the Low Speed is in a separate box.

> Your generalisation re low speeds usually being mounted in the bottom
> head (of double-light signals, presumably) is interesting, in that the
> Strathfield/Lidcombe area is particularly rich in signals where the
low
> speed lights are on separate units rather than being the lowest light
in
> the lower main head. I don't know why - can anyone cast any light on
> this (no pun intended)? One might theorise that they were designed to
be
> close-ups rather than low-speeds (and someone changed their mind in
the
> design stage) or maybe simply someone decided it was cheaper that way,
> but does anyone know definitively?
>
> Eddie
>
That theory may have some merit. However no one would have "changed
their mind" in design stage to put in a 'low speed' in lieu of a 'close
up'. I'd say it was probably the cheaper option (to put the low speed
in a separate box) for the contractor when they did that area.


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