SN.22

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Origin

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Alterations in connection with Reversible Signalling

From 6 March 1977 the signal was mounted on a right-hand cantilever, in readiness for the future installation of SN.624R.

1977-03.png

The reversible signalling was brought into use in 1981 [1].

References

  1. ↑ Signalling Notice 31/2766
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