Can anyone tell me when the changeover was from Semaphore to the modern
light type signals ??
I've seen Steam era layouts with light type signals but is this correct ?
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In message , Keith
Lanham may have written...
There's never really been a changeover as many semaphores are still in
use today, and probably won't be replaced for some time.
Colour light signals came into use in the 1930s, so seeing them on a
steam age layout is correct.
Over a very long period time. Decades.
The earliest colour light signals were direct replacements for the
equivalent semaphore: 2-aspect red/greed and yellow/green. Also
searchlight signals which were single aspect with a apectacle plate
between the light and the lens.
Colour light signals are easier to model but semaphores have more
At one time it was felt that colour light signals were a safety
alternative to AWS. It too the Harrow and Wealdstone tragedy in 1952
when an up steam-hauled express from Scotland ran the colour light
signals to plough into the back of a packed commuter train, to show
that both were needed.
Even modern ones.
Not many years ago an American friend who had just come back from a
company trip to Scotland, told me that he had spent several hours just
sitting on the station watching trains, especially the semaphore
signals. I forget where though.
As others have said, colour light signals have been used since the wide
spread use of electricity.
IIRC the first 'mail line' implementation of colour light signals in the UK
was the Brighton line in the mid 1930's, when the it also became the first
electrified 'main line'.
The Southern Railway started making extensive use of colour light
signals in the 1920's with electrification of the South Eastern section
lines albeit with lever frame interlocking. They were also the first to
introduce 4 aspect signaling at the same time to allow electric suburban
and steam expresses to be more easily regulated.
For steam age layouts the Eckon signals are probably the best match as
they look as if they are modeled on 1950 era signal heads.
And if you go to China you can still see mainline steam action, although
a little off topic.
The 'changeover' as you call it has been going since the Blackfriars scheme
in 1926. There were isolated Multiple Aspect Schemes (MAS) since the 1930s
(York-Darlington). Many large stations had various forms of colour light
signalling. Paddington had a very simple form. Waterloo had a very
comprehensive scheme. The Coulsdon North-Brighton scheme can be considered
as the very first main line scheme in 1932. Although the passenger service
was mainly electric, there would have been steam freight and some passenger
services. Today, there are still isolated pockets of semaphore signaling.
Hope this helps,
Havant was colour light signalled from the 1930s electrification. From the
east, IIRC, from the Warblington Starter, and from the Direct Line from
somewhere North of Butser (sp), right at the tunnel entrance (?) and from
the Portsmouth Direction from the Eastern end of the triangle's Home signals
(Can't recall the actual junction name) through to Bedhampton and Havant.
In Havant, the Hayling Island bay Starter, Advanced Starter, Distant and
Home splitting signals were all semaphores.
Home of the Great Eastern Railway
In message ,
That threat only applied to the main line, where said stock would
operate at high speed. The preserved stuff was safe.
It did happen, sort of, then got put back a bit, I think the final
hurrah may be Jan next year. But in any event Mark 1 stock will remain
on the main line as Notwork Fail has granted derogation to the few
charter sets about. One proviso being that the carriage at each end of
the consist can't be passenger carrying.
Exemptions have been given by HSE to Southern, South West Trains,
South Eastern Trains and Network Rail to continue to run Mk1 stock
without central door locking to 30/11/05.
Make friends in the hobby.
Garratt photos for the big steam lovers.