diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -12,6 +12,7 @@ projects.
 * **[ISP:](./isp)** A simple example of an ISP.
 * **[Royals and Loyals:](./royals_and_loyals)** The famous royals-and-loyals example.
 * **[Stack:](./stack)** A simple stack.
+* **[Vehicles:](./vehicles)** A simple modle of vehicles and driver's licenses.
 
 ## Team
 * [Achim D. Brucker](http://www.brucker.ch/)
diff --git a/vehicles/README.md b/vehicles/README.md
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+++ b/vehicles/README.md
@@ -0,0 +1,9 @@
+# Vehicles
+A simple modle of vehicles and driver's licenses.
+
+## Data Sheet
+* Format:               ArgoUML 0.26
+* Language:             UML/OCL
+
+For further information (license, citation, etc.), please look at the [README.md](../)
+of the main directory. 
diff --git a/vehicles/vehicles.ocl b/vehicles/vehicles.ocl
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+++ b/vehicles/vehicles.ocl
@@ -0,0 +1,76 @@
+-- Copyright (c) 2003-2007 ETH Zurich, Switzerland
+--                    2016 The University of Sheffield, UK
+-- 
+-- All rights reserved.
+-- 
+-- Redistribution and use in source and binary forms, with or without
+-- modification, are permitted provided that the following conditions are met:
+-- 
+-- * Redistributions of source code must retain the above copyright notice, this
+--   list of conditions and the following disclaimer.
+-- 
+-- * Redistributions in binary form must reproduce the above copyright notice,
+--   this list of conditions and the following disclaimer in the documentation
+--   and/or other materials provided with the distribution.
+-- 
+-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+-- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+-- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+-- DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+-- FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+-- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+-- SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+-- CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+-- OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+-- OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package Vehicles
+
+  context Person
+    inv AtLeastOneTruckPerPerson: self.truck->notEmpty()
+    inv NumberOfDrivenTrucksNotZero: self.truck->size() <> 0
+    inv AllPersonsWithDriversLicenseAdult:
+        self.driversLicense->notEmpty() implies self.age > 17
+  inv AllDriversAllowedToDriveTheirTrucks :
+      self.truck->forAll( t:Truck | self.isAllowedToDriveTruck( 
+           self.driversLicense.licenseClass, t.oclAsType(Vehicles.Vehicle).tons))
+
+-- context Person
+--  inv FeatureOfLicenseClassCE:
+--    Truck::allInstances()->forAll( t : Truck |
+--      self.isAllowedToDriveTruck( 'CE', t.tons ) )
+
+-- context Person
+--  inv NoPersonMoreThan18Points:
+--    self.ticket->iterate( t : Ticket ; sum : Integer = 0 |
+--      sum + t.points ) <= 18
+
+  context 
+   Person::isAllowedToDriveTruck(licenseClass:String, tons:Real):Boolean
+   post: result = if licenseClass='CE' or licenseClass='C' 
+                  then true
+                  else if licenseClass='C1' or licenseClass='C1E' 
+                       then tons<=7.5 
+                       else false 
+                       endif 
+                  endif
+
+  context DriversLicense
+    inv AllLicenseOwnersAdult: person.age > 17
+
+  context Truck
+    inv MinimumDimension:
+        self.lengthLoadingSpace > 5.0 and self.widthLoadingSpace > 1.0 and
+        self.heightLoadingSpace > 2.0
+    inv MinimumCapacity: self.capacityLoadingSpace() > 10.0
+
+  context Truck::capacityLoadingSpace():Real
+    post: result = lengthLoadingSpace * widthLoadingSpace 
+                   * heightLoadingSpace
+
+  context Ticket
+    inv PointsNotNegative: self.points >= 0
+    inv NoTicketMoreThan18Points: self.points <= 18
+    inv NoTicketWithoutTruck: self.person.truck->notEmpty()
+
+endpackage
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