diff --git a/tmp/lanelet2_extension/docs/intersection_area.drawio.svg b/tmp/lanelet2_extension/docs/intersection_area.drawio.svg
index f383a09e..39e179f4 100644
--- a/tmp/lanelet2_extension/docs/intersection_area.drawio.svg
+++ b/tmp/lanelet2_extension/docs/intersection_area.drawio.svg
@@ -1,4 +1,241 @@
-
\ No newline at end of file
+
diff --git a/tmp/lanelet2_extension/docs/lanelet2_format_extension.md b/tmp/lanelet2_extension/docs/lanelet2_format_extension.md
index 3dbef9a1..8ca1b4d3 100644
--- a/tmp/lanelet2_extension/docs/lanelet2_format_extension.md
+++ b/tmp/lanelet2_extension/docs/lanelet2_format_extension.md
@@ -373,6 +373,7 @@ For more details about the `no_drivable_lane` concept and design, please refer t
### Intersection area
The polygon of type `intersection_area` can be used for
+
1. extra collision checking inside the intersection
2. ensuring sufficient _drivable area_ in addition to the intersection lane on the route when the ego-vehicle needs to avoid parked vehicles just before the intersection.