reassurance

A reassurance marker or confirming marker is a type of traffic sign that confirms the identity of the route being traveled on. It does not provide information found on other types of road signs, such as distances traveled, distances to other locations or upcoming intersections, as is done by highway location markers.
It is a highway shield, usually with a cardinal direction sign, that repeats the name or number of the current route. They are typically posted at intervals alongside a numbered highway.

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