[OSM-talk] An example of the complications inherent in determining tainted ways

[Nathan Edgars II]

I will look at a single suburban roadway: Westwood Boulevard in the 
International Drive tourist area south of Orlando.
This started out as a TIGER way: 
http://www.openstreetmap.org/browse/way/11197961/history
80n (orange) and kyrbyboy (red) have made some improvements to 
alignment, but have apparently not changed the tags on the ways. More 
recently, JuxTPosition (green) created a dual carriageway, including the 
moving of at least some of the older nodes, and I split the ways to add 
sidewalk tags and bus route relations.

What this means is that, as far as I know, the tags on the ways were all 
added by green users. Some of the nodes have been created by orange or 
red users, but most were later moved by green users.

Because of the splitting, out of the 28 ways that comprise Westwood, 
only http://www.openstreetmap.org/browse/way/23166942 has tainted 
history, even though all have orange or red users in their complete 
history (going back to the ways they were split from). 55 of the 189 
nodes are also tainted, although only one - 
http://www.openstreetmap.org/browse/node/250413743 - is still in the 
position an orange or red user placed it in.

So what here will be reverted by the OSMF? Obviously node 250413743 
needs to be replaced by another node in the same general location. But 
other than that, is everything tainted because it was split from a 
tainted way? Or is nothing else tainted because no data from the orange 
or red users remains? If the latter, do I need to do anything special to 
ensure that the OSMF does not delete it? If the former, exactly what 
needs to be remapped to prevent deletion?