(rail transport) Arailway signal with a movingarm mounted on a signalpost organtry, the position of the arm indicating whether atrain should stop or proceed; they are now largely replaced bycolourlight signals.
The phased programme will run from 1 to 23 February, withsemaphore signals replaced with modern colour lights.
2020 December 2, Paul Bigland, “My weirdest and wackiest Rover yet”, inRail, page67:
After dropping off travellers at Foregate Street, my train terminates at Shrub Hill - a station which boasts one of the best selection [sic] ofsemaphore signals left in the country.
railway semaphore signal on Wikipedia.Wikipedia