Coming on the A8 from Karlsruhe or Munich or from Heilbronn on the A81, drive until the Stuttgart interchange. Follow the A81 towards Böblingen-Singen until the "Böblingen/Sindelfingen" exit. Leave the autobahn in this exit and turn right towards Böblingen. Follow the street until the railroad underpass. After passing it, turn right towards Calw. Follow the street and pass the railroad station on your right. After about 700 m (0.4 miles), turn left into Calwer Straße at the intersection with the traffic light. After about 50 m (164 ft.), you will see the RONDA Building on the right.