semaphore signal

plural semaphore signals

1. Any signal sent by semaphore.
2. rail transportA 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

   1 more example

   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