diff --git a/jsprit-core/src/main/java/jsprit/core/problem/vehicle/VehicleImpl.java b/jsprit-core/src/main/java/jsprit/core/problem/vehicle/VehicleImpl.java
index f7c6f9c8..e1fe8aba 100644
--- a/jsprit-core/src/main/java/jsprit/core/problem/vehicle/VehicleImpl.java
+++ b/jsprit-core/src/main/java/jsprit/core/problem/vehicle/VehicleImpl.java
@@ -330,5 +330,45 @@ public class VehicleImpl implements Vehicle {
 	public Coordinate getEndLocationCoordinate() {
 		return this.endLocationCoord;
 	}
+
+	/* (non-Javadoc)
+	 * @see java.lang.Object#hashCode()
+	 */
+	@Override
+	public int hashCode() {
+		final int prime = 31;
+		int result = 1;
+		result = prime * result + ((id == null) ? 0 : id.hashCode());
+		result = prime * result + ((type == null) ? 0 : type.hashCode());
+		return result;
+	}
+
+	/**
+	 * Two vehicles are equal if they have the same id and if their types are equal.
+	 */
+	@Override
+	public boolean equals(Object obj) {
+		if (this == obj)
+			return true;
+		if (obj == null)
+			return false;
+		if (getClass() != obj.getClass())
+			return false;
+		VehicleImpl other = (VehicleImpl) obj;
+		if (id == null) {
+			if (other.id != null)
+				return false;
+		} else if (!id.equals(other.id))
+			return false;
+		if (type == null) {
+			if (other.type != null)
+				return false;
+		} else if (!type.equals(other.type))
+			return false;
+		return true;
+	}
+
+	
+	
 	
 }
diff --git a/jsprit-core/src/test/java/jsprit/core/problem/vehicle/VehicleImplTest.java b/jsprit-core/src/test/java/jsprit/core/problem/vehicle/VehicleImplTest.java
index 7c81529d..98c05fd3 100644
--- a/jsprit-core/src/test/java/jsprit/core/problem/vehicle/VehicleImplTest.java
+++ b/jsprit-core/src/test/java/jsprit/core/problem/vehicle/VehicleImplTest.java
@@ -171,5 +171,21 @@ public class VehicleImplTest {
 		assertTrue(true);
 	}
 
-
+	@Test
+	public void whenTwoVehiclesHaveTheSameId_theyShouldBeEqual(){
+		Vehicle v = VehicleImpl.Builder.newInstance("v").setStartLocationId("start").setEndLocationId("start").setReturnToDepot(false).build();
+		Vehicle v2 = VehicleImpl.Builder.newInstance("v").setStartLocationId("start").setEndLocationId("start").setReturnToDepot(false).build();
+		assertTrue(v.equals(v2));
+	}
+	
+	@Test
+	public void whenTwoVehiclesHaveTheSameIdButDiffType_theyShouldNotBeEqual(){
+		VehicleTypeImpl type1 = VehicleTypeImpl.Builder.newInstance("type").build();
+		Vehicle v = VehicleImpl.Builder.newInstance("v").setStartLocationId("start").setType(type1).setEndLocationId("start").setReturnToDepot(false).build();
+		PenaltyVehicleType penType = new PenaltyVehicleType(type1);
+		Vehicle v2 = VehicleImpl.Builder.newInstance("v").setType(penType).setStartLocationId("start").setEndLocationId("start").setReturnToDepot(false).build();
+		assertTrue(!v.equals(v2));
+	}
+	
+	
 }
diff --git a/jsprit-core/src/test/java/jsprit/core/problem/vehicle/VehicleTypeImplTest.java b/jsprit-core/src/test/java/jsprit/core/problem/vehicle/VehicleTypeImplTest.java
index 7eef6669..25b8bcc1 100644
--- a/jsprit-core/src/test/java/jsprit/core/problem/vehicle/VehicleTypeImplTest.java
+++ b/jsprit-core/src/test/java/jsprit/core/problem/vehicle/VehicleTypeImplTest.java
@@ -115,9 +115,25 @@ public class VehicleTypeImplTest {
 		VehicleTypeImpl type = VehicleTypeImpl.Builder.newInstance("type").setCostPerTime(-10).build();
 	}
 	
+	@Test
 	public void whenSettingPerTimeCosts_itShouldBeSetCorrectly(){
 		VehicleTypeImpl type = VehicleTypeImpl.Builder.newInstance("type").setCostPerTime(10).build();
-		assertEquals(10.0, type.getVehicleCostParams().perDistanceUnit,0.0);
+		assertEquals(10.0, type.getVehicleCostParams().perTimeUnit,0.0);
+	}
+	
+	@Test
+	public void whenHavingTwoTypesWithTheSameId_theyShouldBeEqual(){
+		VehicleTypeImpl type = VehicleTypeImpl.Builder.newInstance("type").setCostPerTime(10).build();
+		VehicleTypeImpl type2 = VehicleTypeImpl.Builder.newInstance("type").setCostPerTime(10).build();
+		assertTrue(type.equals(type2));
+	}
+	
+	@Test
+	public void whenHavingTwoTypesWithTheSameIdButDiffClass_theyShouldNotBeEqual(){
+		VehicleTypeImpl type = VehicleTypeImpl.Builder.newInstance("type").setCostPerTime(10).build();
+		VehicleTypeImpl type2 = VehicleTypeImpl.Builder.newInstance("type").setCostPerTime(10).build();
+		PenaltyVehicleType penType = new PenaltyVehicleType(type2);
+		assertTrue(!type.equals(penType));
 	}