diff --git a/jsprit-core/src/main/java/com/graphhopper/jsprit/core/problem/constraint/VehicleDependentTimeWindowConstraints.java b/jsprit-core/src/main/java/com/graphhopper/jsprit/core/problem/constraint/VehicleDependentTimeWindowConstraints.java
index 4dd4709e..4574bfb6 100644
--- a/jsprit-core/src/main/java/com/graphhopper/jsprit/core/problem/constraint/VehicleDependentTimeWindowConstraints.java
+++ b/jsprit-core/src/main/java/com/graphhopper/jsprit/core/problem/constraint/VehicleDependentTimeWindowConstraints.java
@@ -108,7 +108,7 @@ public class VehicleDependentTimeWindowConstraints implements HardActivityConstr
             return ConstraintsStatus.NOT_FULFILLED;
         }
         //			log.info("check insertion of " + newAct + " between " + prevAct + " and " + nextAct + ". prevActDepTime=" + prevActDepTime);
-        double routingFromNewToNext = routingCosts.getBackwardTransportTime(newAct.getLocation(), nextActLocation, latestArrTimeAtNextAct, iFacts.getNewDriver(), iFacts.getNewVehicle());
+        double routingFromNewToNext = routingCosts.getTransportTime(newAct.getLocation(), nextActLocation, latestArrTimeAtNextAct, iFacts.getNewDriver(), iFacts.getNewVehicle());
         double arrTimeAtNewAct = prevActDepTime + routingCosts.getTransportTime(prevAct.getLocation(), newAct.getLocation(), prevActDepTime, iFacts.getNewDriver(), iFacts.getNewVehicle());
         double endTimeAtNewAct = Math.max(arrTimeAtNewAct, newAct.getTheoreticalEarliestOperationStartTime()) + activityCosts.getActivityDuration(prevAct, newAct, arrTimeAtNewAct,iFacts.getNewDriver(),iFacts.getNewVehicle());
         double savingsInNextActivityDuration =