diff --git a/brouter-core/src/main/java/btools/router/OsmTrack.java b/brouter-core/src/main/java/btools/router/OsmTrack.java
index 7f57a0c..5c69443 100644
--- a/brouter-core/src/main/java/btools/router/OsmTrack.java
+++ b/brouter-core/src/main/java/btools/router/OsmTrack.java
@@ -1000,7 +1000,7 @@ public final class OsmTrack {
       for (VoiceHint hint : voiceHints.list) {
         sb.append("          [");
         sb.append(hint.indexInTrack);
-        sb.append(',').append(hint.getCommand());
+        sb.append(',').append(hint.getJsonCommandIndex());
         sb.append(',').append(hint.getExitNumber());
         sb.append(',').append(hint.distanceToNext);
         sb.append(',').append((int) hint.angle);
diff --git a/brouter-core/src/main/java/btools/router/VoiceHint.java b/brouter-core/src/main/java/btools/router/VoiceHint.java
index 5fea2d7..2f858be 100644
--- a/brouter-core/src/main/java/btools/router/VoiceHint.java
+++ b/brouter-core/src/main/java/btools/router/VoiceHint.java
@@ -20,11 +20,11 @@ public class VoiceHint {
   static final int KL = 8; // keep left
   static final int KR = 9; // keep right
   static final int TLU = 10; // U-turn
-  static final int TU = 11; // 180 degree u-turn
-  static final int TRU = 12; // Right U-turn
-  static final int OFFR = 13; // Off route
-  static final int RNDB = 14; // Roundabout
-  static final int RNLB = 15; // Roundabout left
+  static final int TRU = 11; // Right U-turn
+  static final int OFFR = 12; // Off route
+  static final int RNDB = 13; // Roundabout
+  static final int RNLB = 14; // Roundabout left
+  static final int TU = 15; // 180 degree u-turn
   static final int BL = 16; // Beeline routing
 
   int ilon;
@@ -61,8 +61,43 @@ public class VoiceHint {
     badWays.add(badWay);
   }
 
-  public int getCommand() {
-    return cmd;
+  public int getJsonCommandIndex() {
+    switch (cmd) {
+      case TLU:
+        return 10;
+      case TU:
+        return 15;
+      case TSHL:
+        return 4;
+      case TL:
+        return 2;
+      case TSLL:
+        return 3;
+      case KL:
+        return 8;
+      case C:
+        return 1;
+      case KR:
+        return 9;
+      case TSLR:
+        return 6;
+      case TR:
+        return 5;
+      case TSHR:
+        return 7;
+      case TRU:
+        return 11;
+      case RNDB:
+        return 13;
+      case RNLB:
+        return 14;
+      case BL:
+        return 16;
+      case OFFR:
+        return 12;
+      default:
+        throw new IllegalArgumentException("unknown command: " + cmd);
+    }
   }
 
   public int getExitNumber() {