Measuring width of stairs with a ramp

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1

Hi,
I am just referring a question from an open note. The user is likely referring to the StreetComplete measurement, which tags the “width” tag on roads if I’m correct.

Note: 5092366 | OpenStreetMap (German, translated:)
Question about width: Does one measure the whole width of the stairs or only the part with the steps? In the middle between steps and ramp there is a handrail. Width steps: 1m, width ramp: also 1m.

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What I know:

  • Tagging the ramp with its intended usage probably gives enough information already, i.e. ramp:stroller=yesimplying bike and stroller, but not wheelchair.
    But this does nothing about the width question.
  • Only related thread I found seems to be one from 2014 (also German), where in the end ramp:width was used: Treppe mit Rampe, wie mappe ich das? - #7 by Hakuch - but that property is still only used 67 times and I wonder if it even makes sense to apply to a split ramp like in the picture.
  • maxwidth:physical is an alternative used on barriers, for the maximum passable width, which would be limited by the handrail. Could it apply here?
2

You could map this as (a) ramp (b) handrail and (c) steps.

I am thinking width=1. If you think of the use cases for width, if you are escorting a 2 year old child, then 1 metre might be enough, but it won’t be enough for you with your grandmother. No matter what configuration the users are in, width>1 isn’t available to anyone, unless they are driving a tank.

3

Width is generally tagged as the strictest restriction along the way for the primary mode of transport. I would tag it as the width of the walking section.

4

Thank you both for confirming that width should be the maximum usable width.
Since StreetComplete uses this, the stairs is what should be measured in this case.

Interesting, I was unaware that one could map these features separately.
However, since that’s not a ramp that can be used with wheelchairs, I don’t think the suggested method on the ramp wiki page makes sense, i.e. mapping it as a footway.

I think I am going to just add (someone alread has) the established ramp:stroller=yes, and add ramp:width in case it ever becomes popular.