crossings are dependent from a local law.
Here at Poland to have a marked crossing you need to have a sign on a pole, painted markings can’t be a marked crossing on their own.
If the road boundary kerb goes through a sidewalk without a crossing, then there is a possibility to say it’s actually an unmarked crossing and vehicles take a priority by going into that driveway, but it’s tricky and you cant be 100% certain about it at court.
Also, we are used that a crossing is tagged only for pedestrians or bikes, but it’s actually the vehicle street that crosses a sidewalk… we don’t even have tags for that.
We when a cyclewey crosses footway or a footway crosses cycleway, we have just one tag for that and it doesn’t specify which one is crossing the other.
Among things i have elaborated about it there on point 2.