Benches with partial backrests

[peternewman]

The bench type quest that was added after #484 , doesn't have the ability to mark a bench with partial backrest, such as most of these:
https://www.furnitubes.com/street-furniture/railroad-delta-straight-curved-seating

I realise this is probably mostly an OSM question. There are currently 20 "partial" values, miniscule compared to yes and no, but the highest value that isn't just a variant of yes/no.

How to Reproduce
Try and answer the quest for a bench with partial backrest.

Versions affected
15.0-beta1, Android 9

I guess this could technically be an enhancement too...

CC @rugk

[rugk]

Uhm interesting observation (and thanks for pining me).

Yeah, the real world is not as binary as we sometimes think (:wink:), but unfortunately OSM currently specifies it like that:
https://wiki.openstreetmap.org/wiki/Key:backrest -> yes/no

So:

1. should not we start with the OSM "spec"/wiki first to make this a "valid" tagging value?
2. or what else is your proposed solution here?

[peternewman]

Yeah, the real world is not as binary as we sometimes think (wink), but unfortunately OSM currently specifies it like that:
https://wiki.openstreetmap.org/wiki/Key:backrest -> yes/no

True, although TagInfo shows some people already using partial:
https://taginfo.openstreetmap.org/keys/?key=backrest#values

Although a few more who can't use the same capitalisation on yes or who go for Y...

So:

1. should not we start with the OSM "spec"/wiki first to make this a "valid" tagging value?

Probably, I don't really know how that whole process works. Certainly there are some quests that can't be correctly answered currently.

2. or what else is your proposed solution here?

It varies along the way? 😆

[matkoniecz]

This key is used in combination with amenity=bench to signify whether the bench has a backrest to lean against or not.

https://wiki.openstreetmap.org/wiki/Key:backrest

I would say that bench that has backrest in at least part of it has backrest, so it would be backrest=yes

But it may be worth discussing at tagging mailing list.

[HolgerJeromin]

I would say that bench that has backrest in at least part of it has backrest, so it would be backrest=yes

Correct. If you need a backrest hopefully you will be allowed to use this part of the bench.

Perhaps tune the text a bit?
Otherwise we still have the "leave note" option.

[peternewman]

Correct. If you need a backrest hopefully you will be allowed to use this part of the bench.

It just seems a shame if we're going to the effort of collecting the info not to collect the most accurate info we can, given the changes to StreetComplete would be fairly trivial.

[westnordost]

The changes to StreetComplete would be trivial, but please post on the tagging mailing list first whether there should be a backrest=partial or not, then it can be added to the wiki and finally to this app.

[westnordost]

Closing for no feedback and this is not the place to establish new tags.

[peternewman]

Okay @westnordost I'll try and take it up with the tagging team first.