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A disc carrying a single character.
Also known as: Whistle board Japan
Instructs a Japanese train driver to sound the whistle at this point on the line.
Instructs the driver to sound the whistle at this point.
Contexts: Public information
Carries a single character where a British whistle board carries a W and a European one a symbol, and it is placed at level crossings, tunnel mouths and blind curves — the same three situations everywhere, marked with a national letterform.
Contexts: Public information
A disc on a short post beside the track carrying one written character across its middle.