Index: trunk/data/validator/highway.mapcss
===================================================================
--- trunk/data/validator/highway.mapcss	(revision 7937)
+++ trunk/data/validator/highway.mapcss	(revision 7977)
@@ -38,5 +38,7 @@
 }
 
-way[highway=crossing], way[railway=crossing] {
+way[highway=crossing],
+way[railway=crossing],
+way[railway=level_crossing] {
   throwWarning: tr("wrong crossing tag on a way");
   assertMatch: "way highway=crossing";