Index: trunk/data/validator/geometry.mapcss
===================================================================
--- trunk/data/validator/geometry.mapcss	(revision 6613)
+++ trunk/data/validator/geometry.mapcss	(revision 6614)
@@ -29,2 +29,7 @@
   throwOther: tr("Overlapping Areas");
 }
+
+/* see ticket #9311 */
+node[amenity=parking] ∈ *[amenity=parking] {
+  throwWarning: tr("{0} inside {1}", "amenity=parking", "amenity=parking");
+}