diff --git a/common/transformations/model.py b/common/transformations/model.py
index 1215909fc4..5d6458fad3 100644
--- a/common/transformations/model.py
+++ b/common/transformations/model.py
@@ -84,6 +84,12 @@ bigmodel_frame_from_road_frame = np.dot(bigmodel_intrinsics,
 bigmodel_frame_from_calib_frame = np.dot(bigmodel_intrinsics,
   get_view_frame_from_calib_frame(0, 0, 0, 0))
 
+sbigmodel_frame_from_road_frame = np.dot(sbigmodel_intrinsics,
+  get_view_frame_from_road_frame(0, 0, 0, model_height))
+
+sbigmodel_frame_from_calib_frame = np.dot(sbigmodel_intrinsics,
+  get_view_frame_from_calib_frame(0, 0, 0, 0))
+
 medmodel_frame_from_road_frame = np.dot(medmodel_intrinsics,
   get_view_frame_from_road_frame(0, 0, 0, model_height))