diff --git a/examples/siri_exm_SX/exm_situationExchange_responsewithaudio.xml b/examples/siri_exm_SX/exm_situationExchange_responsewithaudio.xml
new file mode 100644
index 00000000..9d48bb41
--- /dev/null
+++ b/examples/siri_exm_SX/exm_situationExchange_responsewithaudio.xml
@@ -0,0 +1,125 @@
+
+
+
+
+
+ 2026-05-17T16:00:26+01:00
+ GT7
+ true
+ false
+
+
+ 2026-05-17T16:00:26+01:00
+
+
+ 2026-05-17T16:00:00.0Z
+ fr
+ GT7
+ 123456
+ 0
+
+
+ 2026-05-17T16:00:00
+ fr
+ GT7
+ 123456
+ 0
+
+
+
+ fr
+ directReport
+ 987654
+ 2026-05-17T15:55:00.0Z
+
+ verified
+
+ certain
+
+ 2026-05-17T16:00:00.0Z
+ 2026-05-17T17:30:00.0Z
+
+ unattendedBag
+ slight
+ 5
+ public
+ point
+ Bagage oublié à la station Rome
+ Bagage oublié à la station Rome. Service temporairement interrompu.
+
+
+
+
+
+
+ ROM123SSP
+ Rome
+
+
+
+
+ ROM123SP
+ Rome
+ metroStation
+
+
+
+
+
+
+ 2026-05-17T16:00:00.0Z
+ 2026-05-17T17:30:00.0Z
+
+ disruption
+ slight
+
+ true
+ true
+
+
+ noAlighting
+ noBoarding
+
+
+
+
+
+
+ ShortText
+ Babage oublié à Rome. Service interrompu jusqu'à 17h30.
+ Unattended bag at Rome station. Disruption of service until 17:30.
+
+ true
+ true
+ false
+
+
+
+ ShortText
+ Babage oublié à Rome. Service interrompu jusqu'à 17h30.
+ Unattended bag at Rome station. Disruption of service until 17:30.
+
+ true
+ false
+
+
+
+ ShortText
+ Babage oublié à Rome. Service interrompu jusqu'à 17h30.
+ Unattended bag at Rome station. Disruption of service until 17:30.
+
+ true
+
+
+
+ RecordedMessage
+
+ http://mediabank.aom.fr/audio/unattended_bag_fr.mp3
+ http://mediabank.aom.fr/audio/unattended_bag_en.mp3
+
+
+
+
+
+
+
diff --git a/xsd/siri_model/siri_situationActions.xsd b/xsd/siri_model/siri_situationActions.xsd
index 9a3c06df..b763eec3 100644
--- a/xsd/siri_model/siri_situationActions.xsd
+++ b/xsd/siri_model/siri_situationActions.xsd
@@ -252,6 +252,7 @@ Rail transport, Roads and road transport
+
@@ -399,6 +400,27 @@ Rail transport, Roads and road transport
+
+
+ Action: Publish SITUATION via Audio messages.
+
+
+
+
+ Type for Action Publish SITUATION via Audio messages.
+
+
+
+
+
+
+ Url for the pre-recorded message. If there is no language attribute specified, there is the assumption that the language is multilingual. Producers must change the URL whenever they want a different message to be broadcasted (i.e., situation has changed).
+
+
+
+
+
+
diff --git a/xsd/siri_utility/siri_types.xsd b/xsd/siri_utility/siri_types.xsd
index 4dfd2199..9d2fcc5b 100644
--- a/xsd/siri_utility/siri_types.xsd
+++ b/xsd/siri_utility/siri_types.xsd
@@ -166,4 +166,23 @@ The value range is normally 0-100, but could in some circumstances go beyond 100
+
+
+ Allow the addition of attributes in an URL to add further details about the pre-recorded audio messages that the link points to.
+
+
+
+
+
+ Specifies the MIME media type of the file carrying the pre-recorded message, optionally including a codecs parameter.
+
+
+
+
+ If the pre-recorded message is in a single language, specifies which one.
+
+
+
+
+