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A blue disc carrying a struck-through turning arrow.
Also known as: No U-turn Japan
Prohibits a U-turn on a Japanese road.
Prohibits turning the vehicle to travel back the way it came.
Contexts: Road signage
Draws its hook turning to the right, because on a left-driving network a U-turn crosses the oncoming lane to the right; the same sign in a right-driving country is mirrored.
Contexts: Road signage
A disc containing an arrow that rises, doubles back on itself in a tight hook and points down, with a diagonal stroke ruled across it.