diff --git a/pyrmv/methods/board_arrival.py b/pyrmv/methods/board_arrival.py
index 72db566..0d49a8c 100644
--- a/pyrmv/methods/board_arrival.py
+++ b/pyrmv/methods/board_arrival.py
@@ -49,6 +49,9 @@ def board_arrival(
         * BoardArrival: Instance of BoardArrival object.
     """
 
+    if (isinstance(direction, Stop) or isinstance(direction, StopTrip)):
+        direction = direction.id
+
     board_raw = raw_board_arrival(
         accessId=access_id,
         id=id,
diff --git a/pyrmv/methods/board_departure.py b/pyrmv/methods/board_departure.py
index a8e4bf7..da7bb90 100644
--- a/pyrmv/methods/board_departure.py
+++ b/pyrmv/methods/board_departure.py
@@ -49,6 +49,9 @@ def board_departure(
         * BoardDeparture: Instance of BoardDeparture object.
     """
 
+    if (isinstance(direction, Stop) or isinstance(direction, StopTrip)):
+        direction = direction.id
+
     board_raw = raw_board_departure(
         accessId=access_id,
         id=id,