 The advantage of this system is the fact that the physician is available for other emergencies, while the ambulance crew can handle minor cases on their own.In this system, the physician on duty will actually staff the ambulance, which is now called a "Notarztwagen", will be deployed to any serious medical case.The advantage with this approach lies in the ability to perform more difficult tasks without delay, however, on most calls the presence of the physician is not actually required.