Baloo Uriza
> So OSM should not reflect the legal status of a roadway within the state, instead going off personal opinion?

Correct.  It's not even possible in the US, since the highway=* classification is explicitly British and the only place that it's orthagonal.

> The interchange at 112th is a full-service interchange with ramps in all directions. It's not a "minor junction", whatever that means. Don't make up terms to make a point.

Expressways can have ramps, can be single or multiple carriageways, but the two defining features are that they are limited access and have surface intersections.  A good place to change classifications is at the last major junction, which given the low traffic counts for the Gher Road/112th Avenue ramps, isn't that one.  The traffic lights at 4th Plain definitely make motorway an inappropriate classification.