diff --git a/shortbread-website/content/schema/1.1.md b/shortbread-website/content/schema/1.1.md
index 8635d84..4ccce93 100644
--- a/shortbread-website/content/schema/1.1.md
+++ b/shortbread-website/content/schema/1.1.md
@@ -378,6 +378,30 @@ If a feature is available in the _pois_ layer, it will not be duplicated in the
 | `housename`   | string | {{< tag "addr:housename" >}}   |
 | `housenumber` | string | {{< tag "addr:housenumber" >}} |
 
+### Layer "barrier_lines"
+
+Linear features designed to block or impede movement.
+
+#### Properties
+
+None
+
+#### Features
+
+| Type of feature | OSM tag                            | Geometry | Zoom |
+| --------------- | :--------------------------------- | :------- | :--- |
+| Walls           | {{< tag barrier wall >}}           | line     | 14+  |
+| Hedges          | {{< tag barrier hedge >}}          | line     | 14+  |
+| Retaining walls | {{< tag barrier retaining_wall >}} | line     | 14+  |
+| City walls      | {{< tag barrier city_wall >}}      | line     | 14+  |
+| Fences          | {{< tag barrier fence >}}          | line     | 14+  |
+| Guard rails     | {{< tag barrier guard_rail >}}     | line     | 14+  |
+| Jersey barriers | {{< tag barrier jersey_barrier >}} | line     | 14+  |
+| Handrail        | {{< tag barrier handrail >}}       | line     | 14+  |
+| Chains          | {{< tag barrier chain >}}          | line     | 14+  |
+| Ropes           | {{< tag barrier rope >}}           | line     | 14+  |
+| Cable barriers  | {{< tag barrier cable_barrier >}}  | line     | 14+  |
+
 ## Streets and Transport
 
 ### Layer "streets"