diff --git a/apps/transport/lib/registry/model/data_source.ex b/apps/transport/lib/registry/model/data_source.ex
new file mode 100644
index 0000000000..d985325ce9
--- /dev/null
+++ b/apps/transport/lib/registry/model/data_source.ex
@@ -0,0 +1,23 @@
+defmodule Transport.Registry.Model.DataSource do
+  @moduledoc """
+  Common attributes describing a data source.
+  """
+
+  defstruct [
+    :id,
+    :checksum,
+    :last_updated_at,
+    :validity_period
+  ]
+
+  @type t :: %__MODULE__{
+          id: data_source_id(),
+          checksum: binary(),
+          last_updated_at: DateTime.t(),
+          validity_period: date_time_range()
+        }
+
+  @type data_source_id :: binary()
+
+  @type date_time_range :: binary()
+end
diff --git a/apps/transport/lib/registry/model/stop.ex b/apps/transport/lib/registry/model/stop.ex
new file mode 100644
index 0000000000..50c069818f
--- /dev/null
+++ b/apps/transport/lib/registry/model/stop.ex
@@ -0,0 +1,57 @@
+defmodule Transport.Registry.Model.StopIdentifier do
+  @moduledoc """
+  Representation of a Stop ID.
+  """
+
+  defstruct [
+    :id,
+    :type
+  ]
+
+  @type t :: %__MODULE__{
+          id: binary(),
+          type: identifier_type()
+        }
+
+  @type identifier_type :: :main | :private_code | :stop_code | :other
+end
+
+defmodule Transport.Registry.Model.Stop do
+  @moduledoc """
+  Common attributes describing a stop.
+  """
+  alias Transport.Registry.Model.DataSource
+  alias Transport.Registry.Model.StopIdentifier
+
+  defstruct [
+    :main_id,
+    :display_name,
+    :data_source_id,
+    :data_source_format,
+    :parent_id,
+    :latitude,
+    :longitude,
+    projection: :utm_wgs84,
+    stop_type: :stop,
+    secondary_ids: []
+  ]
+
+  @type t :: %__MODULE__{
+          main_id: StopIdentifier.t(),
+          display_name: binary(),
+          data_source_id: DataSource.data_source_id(),
+          data_source_format: data_source_format_type(),
+          parent_id: StopIdentifier.t() | nil,
+          latitude: float(),
+          longitude: float(),
+          projection: projection(),
+          stop_type: stop_type(),
+          secondary_ids: [StopIdentifier.t()]
+        }
+
+  @type data_source_format_type :: :gtfs | :netex
+
+  @type stop_type :: :stop | :quay | :other
+
+  @type projection :: :utm_wgs84 | :lambert93_rgf93
+end