diff --git a/src/DoubleDeckerBus/Generics/TheBusesGenericCollection.java b/src/DoubleDeckerBus/Generics/TheBusesGenericCollection.java
index 32f2b15..de2497c 100644
--- a/src/DoubleDeckerBus/Generics/TheBusesGenericCollection.java
+++ b/src/DoubleDeckerBus/Generics/TheBusesGenericCollection.java
@@ -66,12 +66,12 @@ public class TheBusesGenericCollection<T extends DrawningBus, U extends IMoveabl
     private void DrawBackground(Graphics g) {
         g.setColor(Color.BLACK);
         for (int i = 0; i < _pictureWidth / _placeSizeWidth; i++) {
-            for (int j = 0; j < _pictureHeight / _placeSizeHeight + 1; ++j) {
-                g.drawLine(i * _placeSizeWidth, j * _placeSizeHeight,
-                        i * _placeSizeWidth + _placeSizeWidth / 2, j * _placeSizeHeight);
+            for (int j = 0; j < _pictureHeight / (_placeSizeHeight * 2) + 1; ++j) {
+                g.drawLine(i * _placeSizeWidth, j * _placeSizeHeight * 2,
+                        i * _placeSizeWidth + _placeSizeWidth / 2, j * _placeSizeHeight * 2);
             }
             g.drawLine(i * _placeSizeWidth, 0, i * _placeSizeWidth,
-                    _pictureHeight / _placeSizeHeight * _placeSizeHeight);
+                    _pictureHeight / (_placeSizeHeight * 2) * _placeSizeHeight * 2);
         }
     }
 
@@ -80,7 +80,7 @@ public class TheBusesGenericCollection<T extends DrawningBus, U extends IMoveabl
             DrawningBus bus = _collection.Get(i);
             if (bus != null) {
                 int inRow = _pictureWidth / _placeSizeWidth;
-                bus.SetPosition((inRow - 1 - (i % inRow)) * _placeSizeWidth, i / inRow * _placeSizeHeight);
+                bus.SetPosition((inRow - 1 - (i % inRow)) * _placeSizeWidth, i / inRow * _placeSizeHeight * 2);
                 bus.DrawTransport((Graphics2D) g);
             }
         }