At State of the Map Africa conference earlier this month we had several discussions about road tagging.
The Africa Highway Tagging Guide <http://wiki.openstreetmap.org/wiki/Highway_Tag_Africa> has been updated to reflect those discussions. Personally I have found that thinking of the tagging hierarchy "upside down" makes more sense than starting with the "important" roads then proceeding down to roads of "lesser importance". Numbers-wise there are more paths and residential roads than any other. The most important transportation route for an individual is the one that leads from their home to the village or town. It could be a path or residential road which would lead to highway=unclassified or highway=tertiary. One question that is useful to ask about the function of the road is "does it provide a *collector *function?", does the road get used to help people from various nearby locations get to a single place such as a hamlet, village, or town? if the route provides access between settlements then the road is highway=unclassified or highway=tertiary +. One of the things that is confusing about the OSM tagging is that it is a mix of function and construction. A motorway and primary highway may have the same function, but different construction class. In the same way a path may be a significant transportation route for a village or small town but it cannot be highway=unclassified or highway=tertiary because of the construction class that limits vehicles. One of the things that was confusing for me when I started tagging OSM roads was the highway=track tag. A track as defined in OSM is not a construction class lower than unclassified or residential. It is a drive-able route used to access agriculture or forestry areas without a connection function between settlements. A track can also be found in a park or game preserve, but should not be used for a road with a through connection. My opinion on highway=service is the same as Blake's, a road inside a restricted access location (gated community or industrial facility) wouldn't have the same function as a road with similar construction but with public access. Regards, Emmor (Palolo) On Wed, Jul 26, 2017 at 6:30 AM, Blake Girardot <[email protected]> wrote: > On Wed, Jul 26, 2017 at 2:39 PM, Bjoern Hassler <[email protected]> > wrote: > > > I agree with your definition. Would you agree that it implies that > > 'residential' is used relatively sparsely, i.e. where a road leads to a > > group of houses, or where a road is located inside a "gated" are, like an > > institution, university, school or residential community? > > If the road is for access to housing and not much else (i.e., > connecting settlements or major roads inside of settlements) I use > residential. > > Roads in institutions or large commercial facilities I would probably > map as highway=service, but I am not sure that is a typical usage of > it, but to me they seem like basically private driveways, just really > long and complicated driveways. I would feel strange mapping them as > residential. > > Cheers > Blake > > _______________________________________________ > HOT mailing list > [email protected] > https://lists.openstreetmap.org/listinfo/hot >
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