I often see major highways created with many sections, sometimes with identical tags, sometimes differing, which is totally understandable.
But often there has been a relation also created for the entire road length, usually named the same as the Hwy Ref.
Over time, with people adding additional info (such as bridges & making dual carriageways), these relations become incomplete.
Where do these “Hwy number” relations get used, and how important is the rectification of the split/missing ones ?
I am guessing a good part of them were made by me. This is a habit I brought with me from the Danish community.
I honestly don’t know how many applications out there rely on it or what they use it for.
Personally I use it as an easy way to load and verify an entire route by simply loading the relation. I don’t know of a simple way to load routes based on the ref, especially when multiple refs share the same piece of road.
So I don’t really know how important they are, but I personally find them useful.