I’ve been pondering a similar question, again for the UK. But what I am trying to determine is how to differentiate between a footpath that is an extension of the pavement (sidewalk) but does not run parallel to the road and a footpath that is merely a right of way across a field.

To be more specific I have come across a new estate where all the roads are cul-de-sacs (dead ends) which are linked by paved footpaths. Outside of this area there is a network of public footpaths which are unpaved tracks across or around fields. While both are footpaths they are obviously quite different and I would push a pram along one but not the other.

Is there any difference in the required tagging?

Andrew