> > The principal should also be extended to tunnels. > > eg tunnel:structure, using values like - "excavated" (shallow cut and > cover tunnels), "bored" (deeper tunnels), and "covered" (ground-level > tunnels enclosed by a building/structure). >
I don't think this withion the scope of general OSMapping. A laymen can often not distinguish how a tunnel was originally constructed. And it does not matter for the en-user of the maps produced from OSM data. I could only find a reason to separate out the cover by a building. Volker
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