[OSM-dev] Turning boundaries to linestrings

[Paul Norman]

On 12/13/2016 9:04 AM, Martin Koppenhoefer wrote:
> that's a nice hack which will generally work, but having overlapping 
> boundaries (different ways on the same position) is not a clear 
> "error" in OSM, so it is not 100% reliable.

No. I looked at the data visually with transparency to find overlaps, 
and they are exceedingly rare. As a data consumer, I have no hesitation 
in calling what you have described an error.