The Ruhr-University Bochum is well connected by public transport. From Bochum Hbf (main station) take line U35 in direction of Hustadt and alight at Ruhr-Universität.
If you come by car, take highway A43 and exit Bo- Querenburg (exit 19). A location map with details about the designated parking area P9 can be found here [1].
The main train station of Bochum is well connected by long distance trains. For planing your journey you may use the webpages [2] of the German national railway company.