Talk:Australian railway signalling

message: 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)
thread_title:  No fishtail UQ 

message: 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)
thread_title:  Queensland Signalling 

message: 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)
thread_title:  Split into separate articles for each State? 

message: 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)
thread_title:  Terminology 

message: 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)
thread_title:  Splitting Queensland into new section 

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thread_title:  External links modified 

message: 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)
thread_title:  NSW signals 

message: 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)
thread_title:  NSW Signalling indications 

message: Can anyone source the Green/Yellow signal being the  Increase to Normal Speed signal? ARTC and Vicsig says otherwise.
Well, I’ve actually got a very good answer for this: With the Green/Yellow signal aspect in Victoria, Australia, it really should have the name “Increase to Normal Speed”. So let me explain:
You know that the Yellow/Green aspect is called “Reduce to Medium Speed”, right? So when you pass through a “Reduce to Medium Speed” (Yellow/Green) aspect, you may proceed through the signal at normal speed, but you must reduce to medium speed before the next signal as it will be showing a Medium Speed indication.
But if the Yellow and the Green lights are on opposite sides (From Yellow/Green to Green/Yellow) in the aspect of the signal, then that would (or should) be called “Increase to Normal Speed”.
But unlike the Yellow/Green “Reduce to Medium Speed” aspect, the Green/Yellow “Increase to Normal Speed” aspect means that you may pass through the signal at Medium Speed, but you need to increase to Normal Speed before the next signal as it will be showing a Normal Speed indication.
Yellow/Green = REDUCE TO MEDIUM SPEED: Proceed through the signal at Normal Speed, but you must reduce to Medium Speed before the next signal as it will be displaying a Medium Speed aspect
Green/Yellow = INCREASE TO NORMAL SPEED: Proceed through the signal at Medium Speed, but you must increase to Normal Speed before the next signal as it will be displaying a Normal Speed aspect  — Preceding unsigned comment added by 2001:8000:1589:4600:69D8:788:9F9D:B58E (talk) 05:12, 3 August 2020 (UTC)
replies: text: Now I’ve just removed your question about the Green/Yellow “INCREASE TO NORMAL SPEED” name.I don’t like the question you asked me. I already have the answer above this sentence, mate. So please read it again so you can actually understand.  — Preceding unsigned comment added by  2001:8000:1589:4600:6039:61C9:CF4B:3ECF (talk) 12:44, 5 August 2020 (UTC)
replies: text: Don't remove other people's comments. It annoys people and makes them less likely to cooperate.  Techie3 (talk) 14:31, 7 August 2020 (UTC)

text: Apart from the weak consistency argument, I don't see any attempt to answer my question. Why do you need a signal warning you of a speed increase? Can you explain why this new signal is not in the ARTC manual or VICSIG? Techie3 (talk) 14:43, 7 August 2020 (UTC)
thread_title:  Green/Yellow signal in Victoria. Proceed, or Increase to Normal Speed 

message: I've rewritten the introduction as it didn't represent the history of Australian signalling practice correctly. When signalling was introduced in the Australian colonies/states, they all followed British practice and the different railway systems were no more divergent than the UK railway companies. The divergence happened in the 20th Century when the systems introduced power signalling, with each state using international 'best' practice when they started to install this type of signalling extensively. Signalling now looks very divergent because mechanical signalling has vanished, and the power signalling has met up. MAndrewWaugh (talk) 23:40, 29 March 2023 (UTC)
thread_title:  Causes of the divergence of Australian signalling practice