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Author Topic: IETs to Bedwyn initially delayed - now running from May 2019  (Read 8083 times)
stuving
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« Reply #105 on: May 30, 2019, 12:51:15 pm »

Sorry for the five day delay II. I was referring to the directional signal beneath the main signal. My memories are they were angled to indicate the direction the train was authorised for which is not the case here.

That was a very old 1950/1960s standard.  All signals are installed at 90 to the track they apply to unless a curve is involved, in which case they will be angled so that they are focussed approximately (but not always) to the signals AWS (Automatic Warning System) magnet which is generally positioned 183m on the approach to the signal.

I suspect jdw.wor was referring to another angle - whether the upper light is to the left or right of the lower. I think in the past the two lights of some of these mini-signals (associated, position-light, or whatever) were thought of as miniature route indicators. But that too went out long ago, and now the direction of any points is indicted by a tiny arrow or (as in this case) be a "theatre-type" indicator. In this case its "S" is presumably for siding - there's only one so there is no need to say which side.

It's all in the current version of the official signals picture-book: RSSB Handbook 521 "Signals, Handsignals, Indicators
and Signs" Issue 5
(beware - several old issues are also Googlefindable).
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SandTEngineer
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« Reply #106 on: May 30, 2019, 02:35:12 pm »

Sorry for the five day delay II. I was referring to the directional signal beneath the main signal. My memories are they were angled to indicate the direction the train was authorised for which is not the case here.

That was a very old 1950/1960s standard.  All signals are installed at 90 to the track they apply to unless a curve is involved, in which case they will be angled so that they are focussed approximately (but not always) to the signals AWS (Automatic Warning System) magnet which is generally positioned 183m on the approach to the signal.

I suspect jdw.wor was referring to another angle - whether the upper light is to the left or right of the lower. I think in the past the two lights of some of these mini-signals (associated, position-light, or whatever) were thought of as miniature route indicators. But that too went out long ago, and now the direction of any points is indicted by a tiny arrow or (as in this case) be a "theatre-type" indicator. In this case its "S" is presumably for siding - there's only one so there is no need to say which side.

It's all in the current version of the official signals picture-book: RSSB Handbook 521 "Signals, Handsignals, Indicators
and Signs" Issue 5
(beware - several old issues are also Googlefindable).

Stuving, I think you need to try to explain that to me again as you have totally confused me...... Roll Eyes
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