diff --git a/osi_object.proto b/osi_object.proto
index fc73e5941..0025054ae 100644
--- a/osi_object.proto
+++ b/osi_object.proto
@@ -216,6 +216,21 @@ message StationaryObject
             // in the environment, like street lights.
             //
             TYPE_EMITTING_STRUCTURE = 18;
+
+            // Landmarks corresponding to barrel in the
+            // in the environment.
+            //
+            TYPE_ BARREL = 19;
+
+            // Landmarks corresponding to guide post in the
+            // in the environment.
+            //
+            TYPE_ GUIDE_POST = 20;
+
+            // Landmarks corresponding to tunnel in the
+            // in the environment.
+            //
+            TYPE_ TUNNEL = 21;
         }
 
         // Definition of material types.