Yeah that’s a question on whether =street_lamp is functional or physical. It isn’t “street light pole” or “street light fixture”, so disused:highway=street_lamp refers to the lamp.
Others can easily have man_made=utility_pole + disused:*= (+ disused=yes )
I don’t agree with many overextended utility=
They are stil street lamps so I do not believe the lifecycle prefix is correct.
How about using light:lit=off. light:litdoes not have it’s own wiki article but it is mentioned in the attributes table for highway=street_lamp. As opening_hours syntax is allowed off on its own simply means always off. According to TagInfo it is already used almost 400 times.
disused:*= is the existing status. It’s independent of whether something is “preserved”. historic= features can be actively used. This alone doesn’t answer what to do with the highway=street_lamp yet.
Thinking about quantities, I’ve not seen or mapped many disused street lamps. That said, I should map the one at the end of map street. :) There is a park in the city centre that uses various designs of old lighting columns as ornamentation.
that I would expect to mean nonexisting and gone street lamp, what was at a given location, temporarily kept into OSM as it is visible on high quality aerial