Coming from the direction of Stuttgart on Autobahn A81:
At Kreuz Hegau, go towards Schaffhausen (CH). Get off the highway at exit Hilzingen, and turn left. Go straight and at the traffic light towards Singen/Industriegebiet. You'll pass through another tunnel. Stay on the road until you get to the traffic light, go straight onto Georg-Fischer-Strasse. Straight ahead you'll see the Supermarket on your left side. Turn right into Bohlingerstrasse. After approx. 70m you'll see the BREYER main entrance to your left.