As I get going with editing, a question arises.

A landuse area (such as residential or industrial) is often naturally bounded by (for example)a road. It seems logical to me that the nodes which define the landuse boundary ought to be IDENTICAL with the nodes on the relevant road. The should perhaps be THE SAME nodes, so that if the road position is corrected, the land use boundary is also simultaneously corrected.

However, I wonder if such a situation would lead to problems with editing (selecting whether you want the landuse boundary or the road for example) and so I ask if it is recommended to leave them separate. If so, what spacing between road and boundary should one aim for?