31/08/2026
The image shows a multi-arm British railway semaphore signal post.
•Top Arm: A red semaphore stop signal with a white vertical stripe, indicating "stop" when horizontal.
•Middle Arm: A yellow fish-tail distant signal with a black chevron, used to warn drivers of the status of the next signal ahead.
•Bottom Arm: A smaller subsidiary or lower red stop/calling-on arm, used for controlled permissive moves or shunt operations.