[Tagging] Kerbs

Matej Lieskovský lieskovsky.matej at gmail.com
Sun Jan 7 19:23:01 UTC 2018


I'd say the first picture is a flush kerb followed by a ramp.

On 7 January 2018 at 20:12, Selfish Seahorse <selfishseahorse at gmail.com>
wrote:

> Not, it's not ideal, you are right. It's just an idea to create some
> order, because the current kerb scheme isn't ideal either. Even if
> only three out of four wheelchair users were satisfied with
> `mountable`, `semi-mountable` and `non-mountable` this would be a step
> forward, in my opinion. Besides, I didn't think of these values to be
> a replacement for kerb:shape, but an addition.
>
> However, if we want to make the current scheme more usable, it is
> necessary to also specify the angle of inclination for sloped kerbs
> (and maybe kerb ramps too). Compare the following two kerbs, which
> have the same shape, but a different level of accessibility:
>
> <https://wiki.openstreetmap.org/wiki/File:Sloped_kerb.jpg>
> <https://wiki.openstreetmap.org/wiki/File:Kerb-45deg.jpg>
>
> Regards
>
> On 7 January 2018 at 19:15, Nick Bolten <nbolten at gmail.com> wrote:
> >> * `mountable`: mountable for wheelchairs and vehicles (...)
> >
> > While this may seem easier to tag on a first pass, it's not ideal, as
> it's
> > making a broad-brush executive decision about accessibility on behalf of
> > others. I'm also not sure how it's different from wheelchair=yes/no
> combined
> > with access=* tags. Describing neutral on-the-ground conditions is
> better,
> > both for accessibility and general use by all mappers/data consumers.
> > Examples:
> >
> > - Athletic manual wheelchair users can mount moderate-height raised
> curbs.
> > - Adventurous manual wheelchair users may want to use driveways as well,
> > where it may not be intuitive to always map accessibility, but does make
> > sense for a curb interface.
> > - Most electric wheelchairs can't handle moderate-height raised curbs.
> > - Souped-up electric wheelchairs can handle even fairly high curbs.
> > - People with impaired stability may strongly prefer moderate-height
> curbs,
> > but don't care about the shape.
> > - A white cane user may want to know whether to expect a certain curb
> shape
> > for navigational purposes.
> > - What about `semi-mountable version 2`, curbs mountable by souped-up
> > electric wheelchairs but not other vehicles?
> >
> > These users can all be accommodated by curb shape and height tags, and
> most
> > can be mostly-accommodated just with curb shape. This is also one of the
> > reasons very few wheelchair maps exist: if you state 'here's the places
> all
> > wheelchairs can go' you'll get a lot of very different complaints, both
> > about not having enough possible routes ('I don't care about curb ramps,
> > just tell me where big displacements and driveways are') and also too
> many
> > ('I can't handle 8 cm displacements, and this rolled curb kept me from
> > making my trip').
> >
> > Best,
> >
> > Nick
> >
> > On Sun, Jan 7, 2018 at 9:15 AM Selfish Seahorse <
> selfishseahorse at gmail.com>
> > wrote:
> >>
> >> On 29 December 2017 at 01:41, Warin <61sundowner at gmail.com> wrote:
> >> > kerb:shape=* would be better as it suggests what is to be tagged.
> >>
> >> Thus, `kerb=*` values could be replaced with:
> >>
> >> * `mountable`: mountable for wheelchairs and vehicles
> >> * `semi-mountable`: not mountable for wheelchairs but mountable for
> >> vehicles
> >> * `non-mountable`: neither mountable for wheelchairs nor vehicles
> >>
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