UM.79: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
No edit summary |
||
| Line 12: | Line 12: | ||
The reversible signalling was brought into use in 1980 <ref>Signalling Notice [[31/2767]]</ref>. | The reversible signalling was brought into use in 1980 <ref>Signalling Notice [[31/2767]]</ref>. | ||
==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. | |||
[[File: 1988-01.png|border]] | |||
==References== | ==References== | ||
<references/> | <references/> | ||
Revision as of 21:41, 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.
