RE: Re: More and more snaps from World War II.
  Bob Pearce

True, but were the lines bi-directional? That is, trains could run in both directions between Flinders St and Spencer St on all four lines?
I think not, at least not until the third viaduct was commissioned and colour light and auto signalling was completed between the two stations.

There was some auto semaphore sigs in place at the time for the times mentioned below, but these were converted to colour light searchlight signals about the time of the third viaduct as well I suspect.
My copious notes (to turn a phrase used by another on this august site) shows that in 1984 the signalling was altered to suit the third viaduct and the underground loops, at which time the viaducts became bi-directional running (on each line).

From:tramsdownunder@... tramsdownunder@...> On Behalf Of espee8800
Sent: Saturday, 16 October 2021 10:09 PM
To: tramsdownunder tramsdownunder@...>
Subject: Re: [TramsDownUnder] Re: More and more snaps from World War II.

Hal, the discs were set back discs from the down viaduct lines back into Flinders Street, the arms were from the up viaduct lines. So signals on the bridge applied from all four lines.

On Sat, 16 Oct 2021, 23:02 Hal Cain, hegcain@... mailto:hegcain@gmail.com > wrote:
Oh my! Apart from the tram shots, that signal gantry on the viaduct: 22 home signals, plus 10 disc signals -- for just two of the four tracks? (Were any of those four tracks bidirectional?) . And the spark or loco driver had to know what each one meant for him.

Am I right in thinking that the Tait set is travelling west, to Spencer St and North Melbourne stations, and probably bound for the Coburg or Essendon lines?

Hal Cain (who saw the viaduct a few times before the extra 2 tracks were added for the City Loop development)



On Sat, Oct 16, 2021 at 5:22 PM Andrew Cook D3619@... mailto:D3619@hotmail.com.au > wrote:
That's it, but very interesting.

Enjoy,

Cheers,
Andrew Cook (amazed at what you get typing in 'St. Kilda railway' on the State Library website).