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A red-ringed disc carrying a speed figure.
Also known as: Speed limit Japan
Sets the maximum speed on a Japanese road in kilometres per hour.
Sets the maximum permitted speed in kilometres per hour.
Contexts: Road signage
Carries no unit on the sign, as almost every national speed sign does not; the figure is read as kilometres per hour because the network is metric throughout, which is a convention rather than something the sign states.
Contexts: Road signage
A disc with a thick contrasting ring around a pale field carrying two or three numerals across its centre.
The floor to this sign's ceiling.