Index: trunk/data/validator/deprecated.mapcss
===================================================================
--- trunk/data/validator/deprecated.mapcss	(revision 13566)
+++ trunk/data/validator/deprecated.mapcss	(revision 13576)
@@ -1223,2 +1223,10 @@
   fixAdd: "amenity=toilets";
 }
+
+way[power=busbar] {
+  throwWarning: tr("{0} is deprecated", "{0.tag}");
+  suggestAlternative: "power=line + line=busbar";
+  group: tr("deprecated tagging");
+  fixAdd: "power=line";
+  fixAdd: "line=busbar";
+}