Talk:Australian railway signalling

No fishtail UQ

There have never been fishtail UQ distant signals. (pointing inwards).

There have been pointed automatic signals between Hexham and Metford (pointing outwards). These signals showed stop, caution and clear.

Tabletop 02:03, 5 February 2006 (UTC) I know that there have not been fishtail UQ signals. I don't know why I wrote it and I couldn't believe I wrote it, but whenI saw it I corrected it. I suppose we can all make mistakes.

Queensland Signalling

QLD signalling (aka QR) is not 100% as per UK practice. There are some notable differences. One of them is the Flashing Yellow. In UK it's to advise the driver that the next signal is set for the junction. In QR, it is used as a Warner and advises the driver that the route is clear to the next signal with little or no overlap. The Double Flashing Yellow is not used in QR. However in QR, a Dynamic Speed Indicator (DSI) has been created, which is placed on the signal behind the junction signal, to advise the driver what speed to do through the junction. Signal engineer (talk) 03:45, 29 November 2007 (UTC)

Split into separate articles for each State?

Each state used signalling that, whilst originally based on British practices, diverged quite considerably from it and each other, especially as the systems evolved. I propose that we create separate articles for NSW and Victoria (to begin with) as these states have the most published sources on their history, and populate the articles with not just a history of the development of the systems, but diagrams of the signals of similar quality to those on the Swedish railway signalling article. I can draw the images necessary for this and have a number of books on the subject(s) that would be excellent sources. What to other people think of this proposal? GorfGnome (talk) 02:31, 21 March 2010 (UTC)

Terminology

As it should be for 'Rollingstock' (see this-named subject in Wikipedia), 'Signalbox' should be one word. Together, the two words 'signal box' convey potentially any number of alternative things. The reason the two words are so widely used instead of the one is the same as for the mistaken use of 'rolling stock'... the matter is little considered and even less understood.Throttleer (talk) 04:54, 22 July 2013 (UTC)

Splitting Queensland into new section

The Queensland section was poorly written and contained repeated phrasing. Also contained several incorrect assumptions and had invalid information. The Queensland section will be re-written into a new section with the correct information. — Preceding unsigned comment added by DrFreeman2012 (talk • contribs) 12:09, 12 October 2014 (UTC)

External links modified

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NSW signals

Ok so the Medium signals for Sydney’s signalling system were changed so that they no longer reference “medium turnout” as a possible following signal. I am sure that a Medium Turnout signal is always preceded by a Medium signal, so unless anyone has reason otherwise I will be changing the page to add it back GuideRail (talk) 09:46, 2 February 2020 (UTC)

NSW signal Names

There are two names that the Green / Yellow signal in NSW has been given in this article, Medium, and Preliminary Caution. Which name shall we choose?TheTrainNoch (talk) 14:58, 14 May 2020 (UTC)

In order to answer your question: With the Green / Yellow NSW signal, I think the more accurate name would be "Preliminary Caution", not "Medium". Because the name "Preliminary Caution" is more precise than "Medium", it means that the next signal is showing a "Caution" aspect (or Green / Red) as both the "Preliminary Caution", and "Caution" signals in NSW actually have the word "Caution" in their aspect names! So please DO NOT use the word "Medium" for the Green / Yellow signal, only just "Preliminary Caution"! And please do not make any further edits to the signal aspect name. I've already changed the name back to "Preliminary Caution" and it MUST stay that way! Please do NOT revert the name back to "Medium", only use "Preliminary Caution"!

NSW Signalling indications

I have modified the NSW Signalling indications in the "Contradictory Meanings" section to clarify some indications used better.

I have extensive experience with signalling systems in the Sydney metropolitan network (Sydney Trains) which is the basis for my contribution. If you feel I need to add citations, please message me or annotate it as such in the article body to remind me to add a citation.

In NSW, there is no such indication as a Preliminary Caution: it is called a Medium.

I do agree with an earlier topic suggesting the states/territories be split into the separate articles. Furthermore, there should also be a comparison page for readers who are interested in the differences and merits of the signalling systems in use across Australia.

Referring to GuideRail's comment, a Medium indication can be seen before a Medium Turnout indication, but it is an older practice. Today, Turnout Repeaters are fitted above the signal heads and display a white band of light pointing in the direction of the turnout ahead to give the driver advance warning. I believe Turnout Repeaters were fitted after a derailment, where a driver was signalled through a siding for a rail clean one morning, but was used to being issued the usual mainline indication on their regular runs through the section. As such, the train was going too fast for the sudden turnout indication. I was not around then, so I cannot absolutely confirm, but that's what I've been told by those who taught me - the usual rail folklore. — Preceding unsigned comment added by Bryce bubbles (talk • contribs) 08:36, 25 May 2020 (UTC)