In Baltimore, I've refrained from tracing too many sidewalks, except when the sidewalk is part of one the the signed city paths. I have noticed that routing that uses OSM (like Strava) tends to choke if all the ways are not there, and also if there are overlapping segments without a node.
I like the, *if it is separate* philosophy. On Wed, Apr 30, 2014 at 2:27 PM, Kai Krueger <kakrue...@gmail.com> wrote: > Toby Murray-2 wrote > > Wait, what is the consensus method for tagging sidewalks? I haven't done > a > > lot of them but I know I've added a few as footways myself. > > I have struggled with how best to map sidewalks in the US as well. In > european cities my impression is that sidewalks are generally directly > attached as part of the road, and they are typically just another (special) > "lane". So there you typically don't map the sidewalks as separate. > Footways > in those settings generally are real footways and thus deserve the > prominence the style sheet gives them. But in the US (at least in > suburbia), > the sidewalks are often much more detached from the road with wide grass > strips between them. They also sometimes aren't entirely parallel to the > road. So there it makes more sense to map them as separate OSM ways rather > than to use a sidewalk key on the main road. > > However, the separate ways also can have disadvantages for pedestrian > routing. As a pedestrian, I would typically just cross a (non busy) road > where ever I need to. If the sidewalks and roads are mapped separately, the > router can't just tell you to cross the road though, but needs to route you > to the next mapped intersection. One also needs to add a number of > connection ways between roads and sidewalks which in that form doesn't > really exist in reality, making the maps look even more messy. > > Not sure there is an ideal solution for this and we will likely see both > explicit footway mapping and mapping as part of the road. It would still be > good to come to somewhat more of a consensus on the topic though. > > Kai > > > > -- > View this message in context: > http://gis.19327.n5.nabble.com/Sidewalks-as-footpaths-tp5804729p5804760.html > Sent from the USA mailing list archive at Nabble.com. > > _______________________________________________ > Talk-us mailing list > Talk-us@openstreetmap.org > https://lists.openstreetmap.org/listinfo/talk-us > -- Elliott Plack http://about.me/elliottp
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