Index: /trunk/data/validator/combinations.mapcss
===================================================================
--- /trunk/data/validator/combinations.mapcss	(revision 8116)
+++ /trunk/data/validator/combinations.mapcss	(revision 8117)
@@ -169,4 +169,9 @@
 }
 
+/* {0.tag} together with {1.tag}, see #10186 */
+*[highway=footway][bicycle=designated] {
+  throwWarning: tr("{0} together with {1}", "{0.tag}", "{1.tag}");
+}
+
 /*see #11127*/
 way[waterway][bridge=yes] {