Index: /applications/editors/josm/plugins/validator/tagchecker.cfg
===================================================================
--- /applications/editors/josm/plugins/validator/tagchecker.cfg	(revision 12907)
+++ /applications/editors/josm/plugins/validator/tagchecker.cfg	(revision 12908)
@@ -45,4 +45,5 @@
 way  : I : highway == secondary && ref != *                    # highway without a reference
 way  : I : highway == tertiary && ref != *                     # highway without a reference
+way  : I : highway == motorway && nat_ref != *                 # highway without a reference
 *    : W : highway == road                                     # temporary highway type
 *    : W : / *name */i == * && name != *                       # misspelled key name
@@ -62,2 +63,10 @@
 *    : I : name == /.*Strasse.*/i                              # street name contains ss
 *    : W : name == /.*Str\.?/i                                 # abbreviated street name
+
+relation : E : type != *                                       # relation without type
+
+node : I : amenity == /restaurant|cafe|fast_food/ && name != * # Restaurant without name
+way  : I : highway != * && railway != * && waterway != * && name == * # unusual named way type
+*    : W : natural == water && waterway == *                   # unusual tag combination
+*    : W : highway == * && waterway == *                       # unusual tag combination
+*    : W : highway == * && natural == *                        # unusual tag combination