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A blue hexagon carrying a route number.
Also known as: Prefectural route Japan, Hexagon route sign Japan
Identifies a Japanese prefectural road by number, distinguished from a national route by outline.
Identifies a prefectural road by its number.
Contexts: Road signage
Names the prefecture as well as the number, because prefectural numbering restarts in each prefecture and a bare number would identify several different roads at once.
Contexts: Road signage
A six-sided outline taller than it is wide, carrying a numeral across its middle with the prefecture named above.
The national tier of the same numbering system.