Index: trunk/resources/styles/standard/elemstyles.mapcss
===================================================================
--- trunk/resources/styles/standard/elemstyles.mapcss	(revision 19575)
+++ trunk/resources/styles/standard/elemstyles.mapcss	(revision 19576)
@@ -5618,4 +5618,8 @@
     set icon_z17;
 }
+node[traffic_sign][maxspeed=implicit][!is_prop_set(icon-image)] {
+    icon-image: "presets/vehicle/restriction/maxspeed_none.svg";
+    set icon_z17;
+}
 node[traffic_sign][maxspeed=~/^[0-9]+$/][!is_prop_set(icon-image)] {
     maxspeedprop: tag(maxspeed);