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A square-ended arm that drops or rises to clear.
Also known as: Home signal arm, Square-ended semaphore, Stop arm
A British lower-quadrant or upper-quadrant semaphore whose square-ended arm, horizontal, requires a train to stop.
Requires a train to stop when the arm stands horizontal.
Contexts: Public information
Is distinguished from a distant signal by the square end of the arm, so the shape alone tells a driver whether the signal is an absolute stop or a warning.
Contexts: Public information
A long arm with a square-cut outer end, horizontal when showing stop and inclined away from horizontal when cleared.