diff --git a/brouter-core/src/main/java/btools/router/KinematicModel.java b/brouter-core/src/main/java/btools/router/KinematicModel.java
index cf34abd..7c89c59 100644
--- a/brouter-core/src/main/java/btools/router/KinematicModel.java
+++ b/brouter-core/src/main/java/btools/router/KinematicModel.java
@@ -11,7 +11,7 @@ import btools.expressions.BExpressionContextNode;
 import btools.expressions.BExpressionContextWay;
 
 
-class KinematicModel extends OsmPathModel
+final class KinematicModel extends OsmPathModel
 {
   public OsmPrePath createPrePath()
   {
@@ -119,7 +119,11 @@ class KinematicModel extends OsmPathModel
   */
   public double getEffectiveSpeedLimit( )
   {
-    return Math.min( getWayMaxspeed(), Math.max( getWayMinspeed(), vmax ) );
+    // performance related inline coding
+    double minspeed = getWayMinspeed();
+    double espeed = minspeed > vmax ? minspeed : vmax;
+    double maxspeed = getWayMaxspeed();
+    return maxspeed < espeed ? maxspeed : espeed;
   }
 
  /**
diff --git a/brouter-core/src/main/java/btools/router/KinematicModelDummy.java b/brouter-core/src/main/java/btools/router/KinematicModelDummy.java
deleted file mode 100644
index af4c2b4..0000000
--- a/brouter-core/src/main/java/btools/router/KinematicModelDummy.java
+++ /dev/null
@@ -1,64 +0,0 @@
-/**
- * Container for link between two Osm nodes
- *
- * @author ab
- */
-package btools.router;
-
-import java.util.Map;
-
-import btools.expressions.BExpressionContextNode;
-import btools.expressions.BExpressionContextWay;
-
-
-final class KinematicModelDummy extends KinematicModel
-{
-  public OsmPrePath createPrePath()
-  {
-    return null;
-  }
-
-  public OsmPath createPath()
-  {
-    return null;
-  }
-
-  public KinematicModelDummy()
-  {
-   turnAngleDecayLength = 50.;
-   f_roll = 232.;
-   f_air = 0.4;
-   f_recup = 600.;
-   p_standby = 250.;
-   recup_efficiency = 0.7;
-   totalweight = 1640.;
-   vmax = 60./ 3.6;
-   leftWaySpeed = 12.f / 3.6;
-   rightWaySpeed = 12.f / 3.6;
-  }
-  public boolean useNewtonApprox;
-
-  // derived values
-  public double  xweight = 1./( 2. * f_air * vmax * vmax * vmax - p_standby );
-  public double  timecost0 = 1./vmax + xweight*(f_roll + f_air*vmax*vmax + p_standby/vmax );
-  
-  @Override
-  public void init( BExpressionContextWay expctxWay, BExpressionContextNode expctxNode, Map<String,String> extraParams )
-  {
-  }
-  
-  public float getWayMaxspeed()
-  {
-    return 100.f;
-  }
-
-  public float getWayMinspeed()
-  {
-    return 0.f;
-  }
-
-  public float getNodeMaxspeed()
-  {
-    return 999.f;
-  }
-}