banner repeater

English

A banner repeater at Bath Spa station, just before a curve.

Noun

banner repeater (plural banner repeaters)

1. (rail transport, UK) A type of railway signal which shows the aspect of a signal ahead of it, normally used in a situation where the main signal is hidden from view, for instance where there is a curve in the track.
   • 2020 December 30, David Allen, “Unusual signals...”, in Rail, page 64:

     Banner-Repeater signals tend to be provided in locations where drivers receive insufficient warning of the main signal, thereby effectively increasing the sighting distance for the main signal.

Further reading

Banner repeating signals on Wikipedia.Wikipedia