diff --git a/brouter-core/src/main/java/btools/router/OsmTrack.java b/brouter-core/src/main/java/btools/router/OsmTrack.java
index 0611abb..4b8ac23 100644
--- a/brouter-core/src/main/java/btools/router/OsmTrack.java
+++ b/brouter-core/src/main/java/btools/router/OsmTrack.java
@@ -563,6 +563,13 @@ public final class OsmTrack
     sb.append( "        \"total-time\": \"" ).append( getTotalSeconds() ).append( "\",\n" );
     sb.append( "        \"total-energy\": \"" ).append( energy ).append( "\",\n" );
     sb.append( "        \"cost\": \"" ).append( cost ).append( "\",\n" );
+    sb.append( "        \"voicehints\": [\n" );
+    for( VoiceHint hint: voiceHints.list )
+    {
+      sb.append( "          [" ).append( hint.indexInTrack ).append( ',' ).append( hint.getCommand() ).append( ',' ).append( hint.getExitNumber() ).append( "],\n" );
+    }
+    sb.deleteCharAt( sb.lastIndexOf( "," ) );
+    sb.append( "        ],\n" );
     sb.append( "        \"messages\": [\n" );
     sb.append( "          [\"" ).append( MESSAGES_HEADER.replaceAll( "\t", "\", \"" ) ).append( "\"],\n" );
     for ( String m : aggregateMessages() )
diff --git a/brouter-core/src/main/java/btools/router/VoiceHint.java b/brouter-core/src/main/java/btools/router/VoiceHint.java
index d6b112d..9634ee2 100644
--- a/brouter-core/src/main/java/btools/router/VoiceHint.java
+++ b/brouter-core/src/main/java/btools/router/VoiceHint.java
@@ -65,6 +65,16 @@ public class VoiceHint
     badWays.add( badWay );
   }
 
+  public int getCommand()
+  {
+    return cmd;
+  }
+
+  public int getExitNumber()
+  {
+    return roundaboutExit;
+  }
+
   public String getCommandString()
   {
     switch ( cmd )