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Railway semaphore signal
/ɹˈeɪlweɪ sˈɛmɐfˌɔː sˈɪɡnəl/
/ɹˈeɪlweɪ sˈɛmɐfˌoːɹ sˈɪɡnəl/Railway semaphore signal
01
a visual signaling device that uses a moving arm to show train drivers if they should stop or proceed
Example
Engineers regularly inspect railway semaphore signals to ensure they are functioning correctly.
Railway semaphore signals are commonly seen alongside tracks, helping to control train traffic.
As the train approached the station, the railway semaphore signal changed, allowing the train to enter safely.
The train slowed down as the railway semaphore signal showed a red arm, indicating a stop.
When the railway semaphore signal moved its arm to the horizontal position, the train driver knew it was safe to go.
