What’s the proper way to tag mini-highs at train station platforms? It has been brought to my attention that it would be helpful to mark the location of these, since not every train door has one.
I had a look at the ramp tag, but it seems to be more that there is a ramp next to stairs (of which there are none).
platform_lift felt a bit closer in intent, but also not a perfect match, because it seems to be more for standalone moving lifts rather than elevated sections of the platform. That and the mini-highs do not themselves allow for boarding without a conductor putting down a bridge plate.
That was my thought as well. I have not seen one of those but it reminds me of the quite common bus platforms designed for wheelchair access which are tagged as
kerb=raised
kerb:approach_aid=yes
If there is no dedicated tag I would map the ramp as a separate way and the platform as raised=yes + wheelchair=designated. As the ramp is not a property of another highway object in the given case it would use highway=ramp for it.
As well as mapping the detail of how wheelchair access is implemented, you could add wheelchair=yes to the station and it’s platforms/passageways/entrances.