Bus shuttle Opera(Kolpinghaus)-Campus - a big bus will come that cannot enter Silberstrasse
The bus will depart from Opera near Kolpinghaus on Thursday at 7:45 a.m.
The bus will depart from Campus on Thursday at 4:15 p.m.
The bus will depart from Opera near Kolpinghaus on Friday at 8:00 a.m. - no shuttle back because city tour starts from campus
The bus will depart from Opera Kolpinghaus on Saturday at 8:15 a.m. - no shuttle back
Train - S-Bahn - Dortmund Central Station - Dortmund University 
The train goes at x:14 , x:34 , x:54 (every 20 minutes) from Dortmund central station - normally from railtrack 7. You leave the train at the 3rd station (Dortmund Universität) after 6 minutes. The train station on campus is more or less under the conference venue.
Late arrival at Kolpinghaus
The door at Kolpinghaus will be locked at 10 p.m. But you can arrive whenever you want. If you are late, please ring the bell.