I don’t believe there is any documentation available for what exactly this property means.
Does anybody know?
OSM has extra highway types for links: https://wiki.openstreetmap.org/wiki/Key:highway#Link_roads
GraphHopper only uses the base types and carries the link information as an extra field.
Oh, I see. So the road_class_link is just indicating whether it is a “link” of the corresponding road_class.
Good to know, I wasn’t able to find that info documented anywhere. Hopefully this will be useful for others in the future.
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