Index: trunk/src/org/openstreetmap/josm/data/validation/tests/LongSegment.java
===================================================================
--- trunk/src/org/openstreetmap/josm/data/validation/tests/LongSegment.java	(revision 10079)
+++ trunk/src/org/openstreetmap/josm/data/validation/tests/LongSegment.java	(revision 10080)
@@ -34,4 +34,7 @@
     @Override
     public void visit(Way w) {
+        if ("ferry".equals(w.get("route"))) {
+            return;
+        }
         Double length = w.getLongestSegmentLength();
         if (length > maxlength) {