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A blue plate carrying an arrow curving around an obstruction.
Also known as: Detour Japan, Diversion Japan
Directs Japanese traffic along a signed detour around a closure.
Directs traffic along a detour around a closed road.
Contexts: Road signage
Draws the whole detour rather than only its first turn, so a driver can see that the route rejoins the road it left; a bare directional arrow makes no such promise, and Japanese practice treats that reassurance as part of the sign's job.
Contexts: Road signage
A wide rectangle in a solid tone carrying an arrow that leaves a straight road, swings out around a blocked stretch and rejoins it.