[Tagging] Help with new tags about wheelchair

[Sebastian Felix Zappe]

Hi Robin,

Sebastian from Wheelmap here. :)

You're right, wheelchair=* is not enough, and what "accessible" means is 
different for everyone. It's cool you want to tag more things about 
PoIs! Wheelmap is going to display many more tags soon, as well. If we 
keep this organized, we can ensure both OnWheels, Wheelmap, and all the 
other clients stay interoperable.

Have you had a look at the existing accessibility tags in OSM already? 
 From what I see, many of your proposed tags exist already:

- entrances: https://wiki.openstreetmap.org/wiki/Key:entrance
- doors: https://wiki.openstreetmap.org/wiki/Key:door
- parking: https://wiki.openstreetmap.org/wiki/Parking
- toilets: https://wiki.openstreetmap.org/wiki/Tag:amenity%3Dtoilets
- elevators: https://wiki.openstreetmap.org/wiki/Tag:highway%3Delevator
- dimensions: https://wiki.openstreetmap.org/wiki/Key:width
- indoor: https://wiki.openstreetmap.org/wiki/Simple_Indoor_Tagging

I think the most important thing is: Ensure that the tags you mentioned 
are not added to *place-of-interest* nodes directly, but to their 
correct "fine-granular" entities in OSM. For example, a door width or 
step count should be tagged on the node that represents the entrance 
door, not the café PoI node inside the building (or worse, the building 
polygon).

Maybe it's best to keep discussions/proposals in the wiki (each 
discussion/proposal near the tag it belongs to) and leave a ping here 
whenever a new discussion happens. From what I see, big proposals with 
many tags at once tend to fail (see 
https://wiki.openstreetmap.org/wiki/Proposal:Healthcare_2.0), small 
proposals seem to work better.

You might also want to have a look at 
https://sozialhelden.github.io/a11yjson/describing-objects/interfaces/ 
from A11yJSON, which is our 'other' data format about physical 
accessibility. It might be a good inspiration source :)

All the best,
Sebastian Felix Zappe


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