Index: Riskeer/Integration/src/Riskeer.Integration.Forms/Views/AssessmentSectionReferenceLineView.cs
===================================================================
diff -u -rd04957276dbeb07bf0ab6189ad7d77385b8f20ca -r389bbd8afb76c14374cf23b2802e532ea6059a4e
--- Riskeer/Integration/src/Riskeer.Integration.Forms/Views/AssessmentSectionReferenceLineView.cs	(.../AssessmentSectionReferenceLineView.cs)	(revision d04957276dbeb07bf0ab6189ad7d77385b8f20ca)
+++ Riskeer/Integration/src/Riskeer.Integration.Forms/Views/AssessmentSectionReferenceLineView.cs	(.../AssessmentSectionReferenceLineView.cs)	(revision 389bbd8afb76c14374cf23b2802e532ea6059a4e)
@@ -24,18 +24,18 @@
 using Core.Common.Base;
 using Core.Components.Gis.Data;
 using Core.Components.Gis.Forms;
+using Riskeer.Common.Data.AssessmentSection;
 using Riskeer.Common.Forms.Factories;
-using Riskeer.Integration.Data;
 using Riskeer.Integration.Forms.Properties;
 
 namespace Riskeer.Integration.Forms.Views
 {
     /// <summary>
-    /// This class is a view showing map data for an assessment section.
+    /// This class is a view showing reference line map data for an assessment section.
     /// </summary>
     public partial class AssessmentSectionReferenceLineView : UserControl, IMapView
     {
-        private readonly AssessmentSection assessmentSection;
+        private readonly IAssessmentSection assessmentSection;
 
         private readonly MapLineData referenceLineMapData;
 
@@ -48,7 +48,7 @@
         /// <param name="assessmentSection">The assessment section to show the data for.</param>
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="assessmentSection"/>
         /// is <c>null</c>.</exception>
-        public AssessmentSectionReferenceLineView(AssessmentSection assessmentSection)
+        public AssessmentSectionReferenceLineView(IAssessmentSection assessmentSection)
         {
             if (assessmentSection == null)
             {
@@ -61,13 +61,13 @@
 
             CreateObservers();
 
-            var mapDataCollection = new MapDataCollection(Resources.AssessmentSectionMap_DisplayName);
+            MapDataCollection = new MapDataCollection(Resources.AssessmentSectionMap_DisplayName);
             referenceLineMapData = RiskeerMapDataFactory.CreateReferenceLineMapData();
 
-            mapDataCollection.Add(referenceLineMapData);
+            MapDataCollection.Add(referenceLineMapData);
 
             SetAllMapDataFeatures();
-            riskeerMapControl.SetAllData(mapDataCollection, assessmentSection.BackgroundData);
+            riskeerMapControl.SetAllData(MapDataCollection, assessmentSection.BackgroundData);
         }
 
         public object Data { get; set; }
@@ -80,6 +80,8 @@
             }
         }
 
+        protected MapDataCollection MapDataCollection { get; }
+
         protected override void Dispose(bool disposing)
         {
             assessmentSectionObserver.Dispose();
Index: Riskeer/Integration/src/Riskeer.Integration.Forms/Views/AssessmentSectionView.cs
===================================================================
diff -u -rc36b47c2e1e8cf948767cca33f80ad735f370ad0 -r389bbd8afb76c14374cf23b2802e532ea6059a4e
--- Riskeer/Integration/src/Riskeer.Integration.Forms/Views/AssessmentSectionView.cs	(.../AssessmentSectionView.cs)	(revision c36b47c2e1e8cf948767cca33f80ad735f370ad0)
+++ Riskeer/Integration/src/Riskeer.Integration.Forms/Views/AssessmentSectionView.cs	(.../AssessmentSectionView.cs)	(revision 389bbd8afb76c14374cf23b2802e532ea6059a4e)
@@ -28,22 +28,20 @@
 using Riskeer.Common.Data.Hydraulics;
 using Riskeer.Common.Forms.Factories;
 using Riskeer.Common.Forms.Helpers;
+using Riskeer.Integration.Data;
 using Riskeer.Integration.Forms.Properties;
 
 namespace Riskeer.Integration.Forms.Views
 {
     /// <summary>
     /// This class is a view showing map data for an assessment section.
     /// </summary>
-    public partial class AssessmentSectionView : UserControl, IMapView
+    public partial class AssessmentSectionView : AssessmentSectionReferenceLineView, IMapView
     {
         private readonly IAssessmentSection assessmentSection;
 
-        private readonly MapLineData referenceLineMapData;
         private readonly MapPointData hydraulicBoundaryLocationsMapData;
 
-        private Observer assessmentSectionObserver;
-        private Observer referenceLineObserver;
         private Observer hydraulicBoundaryLocationsObserver;
         private RecursiveObserver<IObservableEnumerable<HydraulicBoundaryLocationCalculation>, HydraulicBoundaryLocationCalculation> waterLevelCalculationsForFactorizedSignalingNormObserver;
         private RecursiveObserver<IObservableEnumerable<HydraulicBoundaryLocationCalculation>, HydraulicBoundaryLocationCalculation> waterLevelCalculationsForSignalingNormObserver;
@@ -60,7 +58,7 @@
         /// <param name="assessmentSection">The assessment section to show the data for.</param>
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="assessmentSection"/>
         /// is <c>null</c>.</exception>
-        public AssessmentSectionView(IAssessmentSection assessmentSection)
+        public AssessmentSectionView(IAssessmentSection assessmentSection) : base(assessmentSection)
         {
             if (assessmentSection == null)
             {
@@ -73,31 +71,16 @@
 
             CreateObservers();
 
-            var mapDataCollection = new MapDataCollection(Resources.AssessmentSectionMap_DisplayName);
-            referenceLineMapData = RiskeerMapDataFactory.CreateReferenceLineMapData();
             hydraulicBoundaryLocationsMapData = RiskeerMapDataFactory.CreateHydraulicBoundaryLocationsMapData();
 
-            mapDataCollection.Add(referenceLineMapData);
-            mapDataCollection.Add(hydraulicBoundaryLocationsMapData);
+            MapDataCollection.Add(hydraulicBoundaryLocationsMapData);
 
             SetAllMapDataFeatures();
-            riskeerMapControl.SetAllData(mapDataCollection, assessmentSection.BackgroundData);
+            riskeerMapControl.SetAllData(MapDataCollection, assessmentSection.BackgroundData);
         }
 
-        public object Data { get; set; }
-
-        public IMapControl Map
-        {
-            get
-            {
-                return riskeerMapControl.MapControl;
-            }
-        }
-
         protected override void Dispose(bool disposing)
         {
-            assessmentSectionObserver.Dispose();
-            referenceLineObserver.Dispose();
             waterLevelCalculationsForFactorizedSignalingNormObserver.Dispose();
             waterLevelCalculationsForSignalingNormObserver.Dispose();
             waterLevelCalculationsForLowerLimitNormObserver.Dispose();
@@ -118,16 +101,6 @@
 
         private void CreateObservers()
         {
-            assessmentSectionObserver = new Observer(UpdateReferenceLineMapData)
-            {
-                Observable = assessmentSection
-            };
-
-            referenceLineObserver = new Observer(UpdateReferenceLineMapData)
-            {
-                Observable = assessmentSection.ReferenceLine
-            };
-
             waterLevelCalculationsForFactorizedSignalingNormObserver = ObserverHelper.CreateHydraulicBoundaryLocationCalculationsObserver(
                 assessmentSection.WaterLevelCalculationsForFactorizedSignalingNorm, UpdateHydraulicBoundaryLocationsMapData);
             waterLevelCalculationsForSignalingNormObserver = ObserverHelper.CreateHydraulicBoundaryLocationCalculationsObserver(
@@ -153,25 +126,9 @@
 
         private void SetAllMapDataFeatures()
         {
-            SetReferenceLineMapData();
             SetHydraulicBoundaryLocationsMapData();
         }
 
-        #region ReferenceLine MapData
-
-        private void UpdateReferenceLineMapData()
-        {
-            SetReferenceLineMapData();
-            referenceLineMapData.NotifyObservers();
-        }
-
-        private void SetReferenceLineMapData()
-        {
-            referenceLineMapData.Features = RiskeerMapDataFeaturesFactory.CreateReferenceLineFeatures(assessmentSection.ReferenceLine, assessmentSection.Id, assessmentSection.Name);
-        }
-
-        #endregion
-
         #region HydraulicBoundaryLocations MapData
 
         private void UpdateHydraulicBoundaryLocationsMapData()