semaphore signal

Noun

semaphore signal (plural semaphore signals)

1. Any signal sent by semaphore.
2. A railway signal with a moving arm mounted on a signal post or gantry, the position of the arm indicating whether a train should stop or proceed; they are now largely replaced by colour light signals.
   • The phased programme will run from 1 to 23 February, with semaphore signals replaced with modern colour lights.2019 October, “February completion for Wherry lines resignalling”, in Modern Railways, page 22
   • After dropping off travellers at Foregate Street, my train terminates at Shrub Hill - a station which boasts one of the best selection [sic] of semaphore signals left in the country.2020 December 2, Paul Bigland, “My weirdest and wackiest Rover yet”, in Rail, page 67