In this and the next photo are examples of the damage that these warning flags serve to mark. If they are on just one side of the road you may escape the worst of the rough surface by switching to the other lane - but do so only if it is safe!
An example of shoulder damage, typical in the spring when the shoulders have been weakened by thawing and melting snow. If the flags are placed on both sides of the road, use caution as the damage may stretch all the way across the highway.
This is an example of the numerous pavement breaks that are a constant hazard between the bottom of Beaver Slide and the Arctic Circle wayside. Beyond the wayside, they occur as deeper potholes, and the damage continues for many miles farther north.