Index: trunk/resources/data/validator/highway.mapcss
===================================================================
--- trunk/resources/data/validator/highway.mapcss	(revision 17935)
+++ trunk/resources/data/validator/highway.mapcss	(revision 17937)
@@ -167,12 +167,16 @@
 
 /* #20987 */
-way[turn                ][turn                 !~ /^((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through|none|;)+$/],
-way[turn:forward        ][turn:forward         !~ /^((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through|none|;)+$/],
-way[turn:backward       ][turn:backward        !~ /^((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through|none|;)+$/],
-way[turn:both_ways      ][turn:both_ways       !~ /^((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through|none|;)+$/],
-way[turn:lanes          ][turn:lanes           !~ /^((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through|none|;|\|)+$/],
-way[turn:lanes:forward  ][turn:lanes:forward   !~ /^((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through|none|;|\|)+$/],
-way[turn:lanes:backward ][turn:lanes:backward  !~ /^((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through|none|;|\|)+$/],
-way[turn:lanes:both_ways][turn:lanes:both_ways !~ /^((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through|none|;|\|)+$/] {
+way[turn                         ][turn                          !~ /^(none|((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through)(;((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through))*)$/],
+way[turn:forward                 ][turn:forward                  !~ /^(none|((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through)(;((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through))*)$/],
+way[turn:backward                ][turn:backward                 !~ /^(none|((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through)(;((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through))*)$/],
+way[turn:both_ways               ][turn:both_ways                !~ /^(none|((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through)(;((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through))*)$/],
+way[turn:both_ways:forward       ][turn:both_ways:forward        !~ /^(none|((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through)(;((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through))*)$/],
+way[turn:both_ways:backward      ][turn:both_ways:backward       !~ /^(none|((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through)(;((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through))*)$/],
+way[turn:lanes                   ][turn:lanes                    !~ /^(none|((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through)(;((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through))*)(\|(none|((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through)(;((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through))*))*$/],
+way[turn:lanes:forward           ][turn:lanes:forward            !~ /^(none|((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through)(;((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through))*)(\|(none|((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through)(;((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through))*))*$/],
+way[turn:lanes:backward          ][turn:lanes:backward           !~ /^(none|((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through)(;((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through))*)(\|(none|((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through)(;((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through))*))*$/],
+way[turn:lanes:both_ways         ][turn:lanes:both_ways          !~ /^(none|((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through)(;((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through))*)(\|(none|((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through)(;((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through))*))*$/], 
+way[turn:lanes:both_ways:forward ][turn:lanes:both_ways:forward  !~ /^(none|((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through)(;((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through))*)(\|(none|((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through)(;((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through))*))*$/],
+way[turn:lanes:both_ways:backward][turn:lanes:both_ways:backward !~ /^(none|((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through)(;((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through))*)(\|(none|((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through)(;((sharp_|slight_|merge_to_|slide_)?(left|right)|reverse|through))*))*$/] {
   throwWarning: tr("unusual value of {0}", "{0.key}");
   assertMatch: "way turn=straight"; /* through would be correct */
@@ -182,4 +186,5 @@
   assertMatch: "way turn:lanes:forward=straight|right"; /* through would be correct */
   assertMatch: "way turn:lanes:forward=slight_reverse|right"; /* wrong value */
+  assertMatch: "way turn:lanes=left;none|right"; /* "none" needs to be a solo value */
   assertNoMatch: "way turn:lanes:forward=sharp_left;left|left;through;slight_right|slight_right;right";
 }