SN.D4: Difference between revisions
(Created page with "Back to Control Functions ==Origin== ... ==Removal of Auto Plate== The WON, in February 1987, claimed that SN.D4 had been converted to a controlled signal. [[File: 19...") |
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However, it is probable that the signal continued to be an automatic in terms of its technical operation, albeit fitted with an emergency replacement switch, and the removal of the auto-plate was simply for the benefit of drivers treating it as a controlled signal. (This possibly had something to do with [[Hullavington Ground Frame]] in the section ahead?) | However, it is probable that the signal continued to be an automatic in terms of its technical operation, albeit fitted with an emergency replacement switch, and the removal of the auto-plate was simply for the benefit of drivers treating it as a controlled signal. (This possibly had something to do with [[Hullavington Ground Frame]] in the section ahead?) | ||
In later years, despite the | |||
==Conversion back to automatic== | |||
The signal was shown as being converted from a semi-auto (which is more appropriate that the 'controlled' classification it was given, above, in connection with the closure of [[Hullavington Ground Frame]] in July 1993: | |||
[[File: 1993-05.png | border]] | |||
In later years, despite the auto-plate being re-applied to SN.D4, the box instructions at Swindon continued to claim it was plated as a controlled signal. | |||
Latest revision as of 22:46, 15 November 2014
Back to Control Functions
Origin
...
Removal of Auto Plate
The WON, in February 1987, claimed that SN.D4 had been converted to a controlled signal.
However, it is probable that the signal continued to be an automatic in terms of its technical operation, albeit fitted with an emergency replacement switch, and the removal of the auto-plate was simply for the benefit of drivers treating it as a controlled signal. (This possibly had something to do with Hullavington Ground Frame in the section ahead?)
Conversion back to automatic
The signal was shown as being converted from a semi-auto (which is more appropriate that the 'controlled' classification it was given, above, in connection with the closure of Hullavington Ground Frame in July 1993:
In later years, despite the auto-plate being re-applied to SN.D4, the box instructions at Swindon continued to claim it was plated as a controlled signal.