The Schengen Agreement is regarded as a milestone of European integration. It allows travel across participating EU member states without border checks. Vehicles and trains also enjoy free movement across borders. But due to the ongoing influx of refugees, some EU states have suspended the agreement.
More from this edition of Made in Germany: http://www.dw.com/en/made-in-germany-the-business-magazine-2016-02-09/e-18991235-9798