Mar 3, 2019, 10:30 PM by nbol...@gmail.com: > > Also for me - in my opinion it is not a hack, it is a well working solution. > > I want to use this exact info to figure out which areas need more mapping of > sidewalks - and I plan to do so eventually. But it's not easy! > > Here's a friendly and annoying challenge: tell me which sidewalks need to be > mapped (because they are separate geometries, I mean highway=footway, > footway=sidewalk) in Graz, Austria. We will ignore thinking about stale road > way information. Use any tools you'd like! Graz is very well-mapped and was > chosen to be, theoretically, one of the easier places from which to ask this > question. > I agree that it is harder than it should be - in my city I started also adding sidewalk=separate on roads where sidewalk are mapped as separate highway=footway.
As for going from ready data - it is possible to take all roads, exclude ones with sidewalk tag, exclude ones with footway=sidewalk within N meters but no matter chosen N there will be some false positives and/or false negatives. Tagging sidewalk tag on all city roads (sidewalk=separate, sidewalk=none) is required to solve that, though it will still not catch simply outdated info.
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