Typically state DOT functional classification freeway and expressway both imply limited, but not necessarily fully controlled, access, so trunk is a good first approximation. However, the DOT classification diverges enough from OSM tagging standards/consensus (such as it is in the US, anyway) that using it as anything more than a basic reference where decent satellite imagery and ground truth observations are unavailable is a bad idea.
It's better than nothing when looking at unreviewed stuff from the TIGER import, for sure, but that's about it. -Nathan On March 6, 2017 11:13:28 AM EST, Paul Johnson <ba...@ursamundi.org> wrote: >On Mar 5, 2017 13:35, "OSM Volunteer stevea" ><stevea...@softworkers.com> >wrote: > > >I would say "almost, but not quite." Interstate and Freeway, both >highway=motorway. Expressway, highway=trunk. > > >If it's semi limited access (few to no driveways, a mix of at grade and >grade separated junctions), I would call that a trunk. Just a highway >that >isn't limited access? Not a motorway or trunk.
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