Hi! > >We are proposing to import open municipal sidewalk data from the city of > >Seattle as described in this proposal: > >http://wiki.openstreetmap.org/wiki/Seattle,_Washington/Sidewalk_Import. > > > >Imports will be tagged according to the sidewalk schema that we propose > >here: > >http://wiki.openstreetmap.org/wiki/Proposed_features/sidewalk_schema. The > >schema is a proposal for standardization of conventions, rather than > >changing or adding tags, and it is particularly concerned with features of > >sidewalks that may aid or impede travel for people with limited mobility. > > From reading that a number of potential issues occur to me - one of which is > that it does appear to be a change to the way that crossings are mapped. > Your page says "recommend crossings be mapped as ways". > http://wiki.openstreetmap.org/wiki/Tag:highway%3Dcrossing currently suggests > nodes only (and there are people out there avidly changing crossings mapped > as ways to crossings mapped as nodes). Whilst this may just be a > clarification issue, at the very least you'd want to liaise with them so > that you get their input. Perhaps some examples (on the dev server) would > help? > > Whilst I can understand why you'd want to map e.g. drop kerbs for wheelchair > use, I think you need to remember that most of the world is not like > Seattle. In most places in the world jaywalking isn't even a concept and > you can cross a road anywhere that you like. How are you going to model > this?
Dunno. Most of the Europe has crossings. in Czech republic, you are supposed to use them when they are "near". New crossings are often (always?) designed for wheelchairs. > Also on http://wiki.openstreetmap.org/wiki/Proposed_features/sidewalk_schema > you've said " According to Routing/online_routers, routing options for > pedestrians, wheelchair users, and blind persons significantly more limited > than other routing use cases.". This simply isn't the case for pedestrians > - I'm not aware of a mainstream handheld router using OSM data that > _doesn't_ support pedestrian routing. My experience is that handheld > routers often get confused when sidewalks are mapped separately, not because > it's inherantly a bad idea, but because people tend to make a mess of it. > Mapping sidewalks as a separate way is (in both volume and connection terms) > harder than mapping as left/right/both; there's more for mappers, especially > new mappers, to get wrong. Well.. Mapping sideways as left/right/both only looks easy on surface. Right now I'm on highway=primary, surface=asphalt. sidewalk on the right is just next to road, surface=stones, sidewalk on the left is separated by about .5 m of grass from road, surface=stones. What exact attributes would you use to map it? Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html _______________________________________________ Imports mailing list [email protected] https://lists.openstreetmap.org/listinfo/imports
