diff --git a/doc-templates/VehicleParking.md b/doc-templates/VehicleParking.md
index 5d149e40f9a..507894b97e8 100644
--- a/doc-templates/VehicleParking.md
+++ b/doc-templates/VehicleParking.md
@@ -48,6 +48,15 @@ All updaters have the following parameters in common:
 
 <!-- INSERT: bikeep -->
 
+## SIRI-FM
+
+The SIRI-FM updaters works slighly differently from the other in that it only updates the availability
+of parking but does not create new lots in realtime.
+
+The data source must conform to the [Italian SIRI-FM](https://github.com/noi-techpark/sta-nap-export/files/15302688/240502_SpecificaSIRI_v.1.0.3.pdf) profile.
+
+<!-- INSERT: siri-fm -->
+
 ## Changelog
 
 - Create initial sandbox implementation (January 2022, [#3796](https://github.com/opentripplanner/OpenTripPlanner/pull/3796))
diff --git a/docs/RouterConfiguration.md b/docs/RouterConfiguration.md
index a3042e7b91f..0f91875e542 100644
--- a/docs/RouterConfiguration.md
+++ b/docs/RouterConfiguration.md
@@ -875,6 +875,12 @@ Used to group requests when monitoring OTP.
       "feedId" : "bikeep",
       "sourceType" : "bikeep",
       "url" : "https://services.bikeep.com/location/v1/public-areas/no-baia-mobility/locations"
+    },
+    {
+      "type" : "vehicle-parking",
+      "feedId" : "parking",
+      "sourceType" : "siri-fm",
+      "url" : "https://transmodel.api.opendatahub.com/siri-lite/fm/parking"
     }
   ],
   "rideHailingServices" : [
diff --git a/docs/sandbox/VehicleParking.md b/docs/sandbox/VehicleParking.md
index ae83dba2b41..06f520b0972 100644
--- a/docs/sandbox/VehicleParking.md
+++ b/docs/sandbox/VehicleParking.md
@@ -55,7 +55,7 @@ All updaters have the following parameters in common:
 
 The id of the data source, which will be the prefix of the parking lot's id.
 
-This will end up in the API responses as the feed id of of the parking lot.
+This will end up in the API responses as the feed id of the parking lot.
 
 <h4 id="u__2__sourceType">sourceType</h4>
 
@@ -125,7 +125,7 @@ Used for converting abstract opening hours into concrete points in time.
 
 The id of the data source, which will be the prefix of the parking lot's id.
 
-This will end up in the API responses as the feed id of of the parking lot.
+This will end up in the API responses as the feed id of the parking lot.
 
 <h4 id="u__3__sourceType">sourceType</h4>
 
@@ -210,7 +210,7 @@ Tags to add to the parking lots.
 
 The id of the data source, which will be the prefix of the parking lot's id.
 
-This will end up in the API responses as the feed id of of the parking lot.
+This will end up in the API responses as the feed id of the parking lot.
 
 <h4 id="u__4__sourceType">sourceType</h4>
 
@@ -275,7 +275,7 @@ HTTP headers to add to the request. Any header key, value can be inserted.
 
 The id of the data source, which will be the prefix of the parking lot's id.
 
-This will end up in the API responses as the feed id of of the parking lot.
+This will end up in the API responses as the feed id of the parking lot.
 
 <h4 id="u__5__sourceType">sourceType</h4>
 
@@ -336,7 +336,7 @@ HTTP headers to add to the request. Any header key, value can be inserted.
 
 The id of the data source, which will be the prefix of the parking lot's id.
 
-This will end up in the API responses as the feed id of of the parking lot.
+This will end up in the API responses as the feed id of the parking lot.
 
 <h4 id="u__14__sourceType">sourceType</h4>
 
@@ -373,6 +373,85 @@ HTTP headers to add to the request. Any header key, value can be inserted.
 
 <!-- bikeep END -->
 
+## SIRI-FM
+
+The SIRI-FM updaters works slighly differently from the other in that it only updates the availability
+of parking but does not create new lots in realtime.
+
+The data source must conform to the [Italian SIRI-FM](https://github.com/noi-techpark/sta-nap-export/files/15302688/240502_SpecificaSIRI_v.1.0.3.pdf) profile.
+
+<!-- siri-fm BEGIN -->
+<!-- NOTE! This section is auto-generated. Do not change, change doc in code instead. -->
+
+| Config Parameter                 |       Type      | Summary                                                                      |  Req./Opt. | Default Value | Since |
+|----------------------------------|:---------------:|------------------------------------------------------------------------------|:----------:|---------------|:-----:|
+| type = "vehicle-parking"         |      `enum`     | The type of the updater.                                                     | *Required* |               |  1.5  |
+| [feedId](#u__15__feedId)         |     `string`    | The id of the data source, which will be the prefix of the parking lot's id. | *Required* |               |  2.2  |
+| frequency                        |    `duration`   | How often to update the source.                                              | *Optional* | `"PT1M"`      |  2.6  |
+| [sourceType](#u__15__sourceType) |      `enum`     | The source of the vehicle updates.                                           | *Required* |               |  2.2  |
+| [url](#u__15__url)               |      `uri`      | URL of the SIRI-FM Light endpoint.                                           | *Required* |               |  2.6  |
+| [headers](#u__15__headers)       | `map of string` | HTTP headers to add to the request. Any header key, value can be inserted.   | *Optional* |               |  2.6  |
+
+
+#### Details
+
+<h4 id="u__15__feedId">feedId</h4>
+
+**Since version:** `2.2` ∙ **Type:** `string` ∙ **Cardinality:** `Required`   
+**Path:** /updaters/[15] 
+
+The id of the data source, which will be the prefix of the parking lot's id.
+
+This will end up in the API responses as the feed id of the parking lot.
+
+<h4 id="u__15__sourceType">sourceType</h4>
+
+**Since version:** `2.2` ∙ **Type:** `enum` ∙ **Cardinality:** `Required`   
+**Path:** /updaters/[15]   
+**Enum values:** `park-api` | `bicycle-park-api` | `hsl-park` | `bikely` | `noi-open-data-hub` | `bikeep` | `siri-fm`
+
+The source of the vehicle updates.
+
+<h4 id="u__15__url">url</h4>
+
+**Since version:** `2.6` ∙ **Type:** `uri` ∙ **Cardinality:** `Required`   
+**Path:** /updaters/[15] 
+
+URL of the SIRI-FM Light endpoint.
+
+SIRI Light means that it must be available as a HTTP GET request rather than the usual
+SIRI request mechanism of HTTP POST.
+
+The contents must also conform to the [Italian SIRI profile](https://github.com/noi-techpark/sta-nap-export/files/15302688/240502_SpecificaSIRI_v.1.0.3.pdf).
+
+
+<h4 id="u__15__headers">headers</h4>
+
+**Since version:** `2.6` ∙ **Type:** `map of string` ∙ **Cardinality:** `Optional`   
+**Path:** /updaters/[15] 
+
+HTTP headers to add to the request. Any header key, value can be inserted.
+
+
+
+##### Example configuration
+
+```JSON
+// router-config.json
+{
+  "updaters" : [
+    {
+      "type" : "vehicle-parking",
+      "feedId" : "parking",
+      "sourceType" : "siri-fm",
+      "url" : "https://transmodel.api.opendatahub.com/siri-lite/fm/parking"
+    }
+  ]
+}
+```
+
+<!-- siri-fm END -->
+
 ## Changelog
 
 - Create initial sandbox implementation (January 2022, [#3796](https://github.com/opentripplanner/OpenTripPlanner/pull/3796))
diff --git a/src/main/java/org/opentripplanner/standalone/config/routerconfig/updaters/VehicleParkingUpdaterConfig.java b/src/main/java/org/opentripplanner/standalone/config/routerconfig/updaters/VehicleParkingUpdaterConfig.java
index 6ef8c465bc3..60f794f2f2a 100644
--- a/src/main/java/org/opentripplanner/standalone/config/routerconfig/updaters/VehicleParkingUpdaterConfig.java
+++ b/src/main/java/org/opentripplanner/standalone/config/routerconfig/updaters/VehicleParkingUpdaterConfig.java
@@ -30,7 +30,7 @@ public static VehicleParkingUpdaterParameters create(String updaterRef, NodeAdap
       .of("feedId")
       .since(V2_2)
       .summary("The id of the data source, which will be the prefix of the parking lot's id.")
-      .description("This will end up in the API responses as the feed id of of the parking lot.")
+      .description("This will end up in the API responses as the feed id of the parking lot.")
       .asString();
     return switch (sourceType) {
       case HSL_PARK -> new HslParkUpdaterParameters(
@@ -103,7 +103,19 @@ public static VehicleParkingUpdaterParameters create(String updaterRef, NodeAdap
       );
       case SIRI_FM -> new SiriFmUpdaterParameters(
         updaterRef,
-        c.of("url").since(V2_6).summary("URL of the SIRI-FM Light endpoint.").asUri(),
+        c
+          .of("url")
+          .since(V2_6)
+          .summary("URL of the SIRI-FM Light endpoint.")
+          .description(
+            """
+          SIRI Light means that it must be available as a HTTP GET request rather than the usual
+          SIRI request mechanism of HTTP POST.
+          
+          The contents must also conform to the [Italian SIRI profile](https://github.com/noi-techpark/sta-nap-export/files/15302688/240502_SpecificaSIRI_v.1.0.3.pdf).
+          """
+          )
+          .asUri(),
         feedId,
         c
           .of("frequency")
diff --git a/src/test/java/org/opentripplanner/updater/vehicle_parking/VehicleParkingAvailabilityUpdaterTest.java b/src/test/java/org/opentripplanner/updater/vehicle_parking/VehicleParkingAvailabilityUpdaterTest.java
index 713b6d01664..0af58378f90 100644
--- a/src/test/java/org/opentripplanner/updater/vehicle_parking/VehicleParkingAvailabilityUpdaterTest.java
+++ b/src/test/java/org/opentripplanner/updater/vehicle_parking/VehicleParkingAvailabilityUpdaterTest.java
@@ -81,6 +81,7 @@ void updateBicycleAvailability() {
     assertEquals(8, updated.getAvailability().getBicycleSpaces());
     assertNull(updated.getAvailability().getCarSpaces());
   }
+
   @Test
   void notFound() {
     var service = buildParkingService(VehicleParkingSpaces.builder().bicycleSpaces(15).build());
diff --git a/src/test/resources/standalone/config/router-config.json b/src/test/resources/standalone/config/router-config.json
index 3a3ef9b4cf0..c526de423c1 100644
--- a/src/test/resources/standalone/config/router-config.json
+++ b/src/test/resources/standalone/config/router-config.json
@@ -438,6 +438,13 @@
       "feedId": "bikeep",
       "sourceType": "bikeep",
       "url": "https://services.bikeep.com/location/v1/public-areas/no-baia-mobility/locations"
+    },
+    // SIRI-FM vehicle parking updater
+    {
+      "type": "vehicle-parking",
+      "feedId": "parking",
+      "sourceType": "siri-fm",
+      "url": "https://transmodel.api.opendatahub.com/siri-lite/fm/parking"
     }
   ],
   "rideHailingServices": [