UM.79: Difference between revisions
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The signal was given the capability to flash double yellow in May 1988, when the next signal, [[SN.53]], was showing a flashing single yellow, and the following signal [[SN.59]], was cleared towards platform 3 or platform 1. | The signal was given the capability to flash double yellow in May 1988, when the next signal, [[SN.53]], was showing a flashing single yellow, and the following signal [[SN.59]], was cleared towards platform 3 or platform 1. | ||
[[File: 1988- | [[File: 1988-02.png|border]] | ||
==References== | ==References== | ||
<references/> | <references/> | ||
Latest revision as of 21:42, 15 November 2014
Back to Control Functions
Origin
...
Alterations in connection with Reversible Signalling
From 6 November 1977 the signal was mounted on a new gantry, in readiness for the future installation of SN.653R and DM.79 on the same structure.
The reversible signalling was brought into use in 1980 [1].
Capability to flash double yellow
The signal was given the capability to flash double yellow in May 1988, when the next signal, SN.53, was showing a flashing single yellow, and the following signal SN.59, was cleared towards platform 3 or platform 1.
