diff --git a/osi_object.proto b/osi_object.proto
index 1578f7bf3..5a430e092 100644
--- a/osi_object.proto
+++ b/osi_object.proto
@@ -173,6 +173,10 @@ message StationaryObject
             // environment, like beacons.
             //
             TYPE_CONSTRUCTION_SITE_ELEMENT = 16;
+
+            // Object is a speed bump.
+            //
+            TYPE_SPEED_BUMP = 17;
         }
 
         // Definition of material types.