OpenStreetMap
The best way I can find in Potlatch (where they are called out with a pulsing red circle) is to delete the upper node, split the overlying way(s), extend them to the exposed lower node and rejoin them to it. Is there a better way or reason not to do so where/when I find them?
Discussion
Comment from Richard on 3 September 2010 at 22:41
If you want to join two nodes at the same place, select one and press J for join.
Comment from EdLoach on 4 September 2010 at 11:13
And if I recall correctly, if you have a lot of pulsing circles on a single way, select the way and press J to join them all. It's been a while since I was deduplicating though.
Comment from Dion Dock on 9 September 2010 at 16:07
The only nodes I join are highway= nodes that are supposed to intersect (see http://keepright.ipax.at).
I really don't like having area nodes (like city limits) joined to other nodes (like highways). It's really hard to make a change to one without affecting the other. For example, the city limit follows a freeway that is later split into two one way tracks. Now moving either half of the freeway moves the city limit.
-Dion