What type of gate is this? (Ask for gate:type for all barrier=gate)

[mcliquid]

General

Affected tag(s) to be modified/added: gate:type
Question asked: What type of gate is this?

Checklist

Checklist for quest suggestions (see guidelines):

• 🚧 To be added tag is established and has a useful purpose
  There are three different tagging styles available but I would say "gate:type" has been established with 16k uses compared to 2k and 0,5k uses for gate and gate_type
• 🤔 Any answer the user can give must have an equivalent tagging (Quest should not reappear to other users when solved by one)
  When it is a barrier=gate, then one of the answers should match. Otherwise it's not a barrier=gate or leave a note.
• 🐿️ Easily answerable by any pedestrian from the outside but a survey is necessary
  I want to leave this open yet, as I suspect it's like the shelter_type quest: too many possible answers and probably too difficult to distinguish them. (shelter_type quest #4428)
• 💤 Not an overwhelming percentage of quests have the same answer (No spam)
  The answer will definitely come very often, as the tag is not very common yet, but there shouldn't be a barrier=gate on every corner either.
• 🕓 Applies to a reasonable number of map data (Worth the effort)
  There are more then 4 million barrier=gate out there, but only ~ 20k have a specific "type of gate" tag.

Ideas for implementation

Element selection:
nodes with barrier=gate and (!gate:type or !gate_type or !gate) )

Proposed UI:
Same UI as in stile quest #3372

[legofahrrad]

I like detailed OSM data and love to collect these specific information, but what is actually the useful purpose of the gate:type?

[mcliquid]

@legofahrrad If it is tagged correctly, a router should be able to better decide which mode of transport the gate is suitable for. In addition, this quest should also be able to improve tagging.
If currently barrier=gate is tagged and the user would choose sliding_gate in the selection, then not gate_type=sliding_gate but barrier=sliding_gate would be set.

[westnordost]

I don't see a useful purpose for that either. To check if current data is correct is a weak argument.

[mnalis]

Also, linked wiki stating:

The keys gate=* or gate:type=* are in use to specify more details for the gate type. Have a look at Taginfo (gate:type=) and Taginfo (gate=) until some definitions get agreed on and documented here.

is not too reassuring (at the moment)...