Document DoesPlayerVehHaveRadio, IsVehicleSirenAudioOn

AUDIO/DoesPlayerVehHaveRadio.md

@@ -9,4 +9,8 @@ aliases: ["0x109697E2FFBAC8A1"]
 BOOL DOES_PLAYER_VEH_HAVE_RADIO();
 ```
 
+Checks if the vehicle the local player is currently in has a radio.
+
 ## Return value
+
+Returns `true` if the player's current vehicle has a radio. Returns `false` if it does not, or if the player is not in any vehicle.

VEHICLE/IsVehicleSirenAudioOn.md

@@ -9,8 +9,32 @@ aliases: ["0xB5CC40FBCB586380","_IS_VEHICLE_SIREN_SOUND_ON"]
 BOOL IS_VEHICLE_SIREN_AUDIO_ON(Vehicle vehicle);
 ```
 
+Checks if the siren audio is currently playing on the given vehicle.
+
+This only checks the sound not the lights. A vehicle can have its siren lights active while the audio is silent, for example when [`SET_VEHICLE_HAS_MUTED_SIRENS`](#_0xD8050E0EB60CF274) has been used to suppress the sound.
 
 ## Parameters
-* **vehicle**: 
+
+* **vehicle**: The vehicle to check.
 
 ## Return value
+
+Returns `true` if the siren audio is currently playing, `false` if it is silent or the vehicle does not have a siren.
+
+## Examples
+
+```lua
+local vehicle = GetVehiclePedIsIn(PlayerPedId(), false)
+
+if IsVehicleSirenAudioOn(vehicle) then
+    print("Siren is audible")
+end
+```
+
+```js
+const vehicle = GetVehiclePedIsIn(PlayerPedId(), false);
+
+if (IsVehicleSirenAudioOn(vehicle)) {
+    console.log("Siren is audible");
+}
+```