Index: trunk/data/validator/combinations.mapcss
===================================================================
--- trunk/data/validator/combinations.mapcss	(revision 15193)
+++ trunk/data/validator/combinations.mapcss	(revision 15194)
@@ -379,5 +379,5 @@
 *[psv     ][!highway][!railway][!waterway][barrier!=bollard][amenity !~ /^parking.*/],
 *[width   ][!highway][!railway][!waterway][!aeroway][!cycleway][!footway][!barrier][!man_made][!entrance][natural!=stone][leisure!=track],
-*[maxspeed][!highway][!railway][traffic_sign !~ /^((.*;)?maxspeed(;.*)?|[A-Z][A-Z]:.+)$/][type != enforcement][waterway !~ /^(river|canal|lock)$/][!traffic_calming][aerialway!=zip_line] {
+*[maxspeed][!highway][!railway][traffic_sign !~ /^((.*;)?maxspeed(;.*)?|[A-Z][A-Z]:.+)$/][traffic_sign:forward !~ /^((.*;)?maxspeed(;.*)?|[A-Z][A-Z]:.+)$/][traffic_sign:backward !~ /^((.*;)?maxspeed(;.*)?|[A-Z][A-Z]:.+)$/][type != enforcement][waterway !~ /^(river|canal|lock)$/][!traffic_calming][aerialway!=zip_line] {
   throwWarning: tr("{0} on suspicious object", "{0.key}");
   group: tr("suspicious tag combination");