UM.68

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Origin

UM.68 was a 3-aspect automatic signal commissioned at Swindon MAS Stage 1 on 14 November 1966[1]. At that stage it was supervised by Uffington SB.

Previous Signal Line Line Next Signal
UM.69 Up Main Up Main UF.22

Supervision passed to Swindon Panel under Swindon MAS Stage 5 on 3rd March 1968.

Previous Signal Line Line Next Signal
UM.69 Up Main Up Main SN.89

Alterations in connection with Reversible Signalling

From 19 June 1977 the signal was mounted on a right-hand cantilever, in readiness for the future installation of SN.693RR on the same structure.

1977-05.png

Conversion to four-aspect

When SN.93 was brought into use over the weekend of 22-24 October 1977, further in connection with the installation of reversible signalling, UM.68 was converted to a four-aspect, as there was the insufficient braking distance between SN.89 and SN.93.

1977-09.png

The reversible signalling was brought into use in 1981 [2].

References

  1. Signalling Notice S.2498
  2. Signalling Notice 31/W/2770