Danny: Created page with "Back to Control Functions ==Origin== The signal was brought into use over the weekend 3-5 May 1977, replacing ground position light signal SN.209 as part of the prep..."

2014-11-15T14:06:21Z

Created page with "Back to Control Functions ==Origin== The signal was brought into use over the weekend 3-5 May 1977, replacing ground position light signal SN.209 as part of the prep..."

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Back to [[Control Functions]]

==Origin==

The signal was brought into use over the weekend 3-5 May 1977, replacing ground position light signal [[SN.209]] as part of the preparation for the commissioning of reversible signalling.

SN.653 was fixed at red initially.

[[File: 1977-11.png|border]]

The reversible signalling was brought into use in 1980 <ref>Signalling Notice [[31/2767]]</ref>.

==References==

<references/>

SN.653 - Revision history

Danny: Created page with "Back to Control Functions ==Origin== The signal was brought into use over the weekend 3-5 May 1977, replacing ground position light signal SN.209 as part of the prep..."