Index: trunk/resources/data/validator/unnecessary.mapcss
===================================================================
--- trunk/resources/data/validator/unnecessary.mapcss	(revision 19028)
+++ trunk/resources/data/validator/unnecessary.mapcss	(revision 19169)
@@ -68,5 +68,6 @@
 
 /* see ticket #7639 -- Warn when a node has the same tags as its parent way. */
-way >:sameTags node:tagged {
+/* But don't warn on barrier tags -- a common mapping method will have a barrier on the routable way and then the micromapped barrier */
+way[!barrier] >:sameTags node:tagged {
   throwWarning: tr("Nodes duplicating parent way tags");
 }