[OSM-talk] Planned revert of added surface and tracktype tags without local knowledge in various countries
Andy Townsend
ajt1047 at gmail.com
Sat Jul 18 20:40:30 UTC 2020
On 18/07/2020 20:51, Joseph Eisenberg wrote:
> It's perfectly reasonable to add surface=unpaved or similar based on
> aerial imagery alone, if you have some experience in distinguishing
> different surfaces of roads and tracks from aerial imagery.
I'd agree that most of the time telling "surface=unpaved" from a paved
road or track is certainly possible. However, beyond that might be tricky.
As an example, here's one that I updated in OSM this morning. Have a
look at https://www.openstreetmap.org/way/169902637 and follow that to
the southwest. The surface changes a few times before it meets the next
road. Do you believe that you would be able to infer those surface tags
from imagery? I haven't added a tracktype there yet (lots of stuff in
that area needs a resurvey!) and I'm sure you could say "it's definitely
not tracktype=4 or 5" but I'd be reluctant to "overclaim" based on
less-than-ideal sources.
Best Regards,
Andy
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