diff --git a/jsprit-core/src/main/java/jsprit/core/algorithm/state/StateManager.java b/jsprit-core/src/main/java/jsprit/core/algorithm/state/StateManager.java
index c3e70287..7ea2fce1 100644
--- a/jsprit-core/src/main/java/jsprit/core/algorithm/state/StateManager.java
+++ b/jsprit-core/src/main/java/jsprit/core/algorithm/state/StateManager.java
@@ -122,6 +122,8 @@ public class StateManager implements RouteAndActivityStateGetter, IterationStart
 
     private VehicleRoutingProblem vrp;
 
+    int getMaxIndexOfVehicleTypeIdentifiers(){ return nuVehicleTypeKeys; }
+
     public StateId createStateId(String name){
         if(createdStateIds.containsKey(name)) return createdStateIds.get(name);
         if(stateIndexCounter>=activity_states[0].length){
diff --git a/jsprit-core/src/main/java/jsprit/core/algorithm/state/UpdateVehicleDependentPracticalTimeWindows.java b/jsprit-core/src/main/java/jsprit/core/algorithm/state/UpdateVehicleDependentPracticalTimeWindows.java
index d1d8d0b0..13fdbbab 100644
--- a/jsprit-core/src/main/java/jsprit/core/algorithm/state/UpdateVehicleDependentPracticalTimeWindows.java
+++ b/jsprit-core/src/main/java/jsprit/core/algorithm/state/UpdateVehicleDependentPracticalTimeWindows.java
@@ -36,13 +36,8 @@ public class UpdateVehicleDependentPracticalTimeWindows implements ReverseActivi
         this.transportCosts = tpCosts;
         this.fleetManager = fleetManager;
         this.vehicleSwitchAllowed=isVehicleSwitchAllowed;
-        int maxVehicleTypeIndex = getMaxTypeIndex(fleetManager);
-        latest_arrTimes_at_prevAct = new double[maxVehicleTypeIndex];
-        location_of_prevAct = new String[maxVehicleTypeIndex];
-    }
-
-    private int getMaxTypeIndex(VehicleFleetManager fleetManager) {
-        return 0;
+        latest_arrTimes_at_prevAct = new double[stateManager.getMaxIndexOfVehicleTypeIdentifiers() + 1];
+        location_of_prevAct = new String[stateManager.getMaxIndexOfVehicleTypeIdentifiers() + 1];
     }
 
     @Override