Abstract
A customer-oriented and easy-to-use traveler information service as well as a reliable cross-operating service is one important base for the attractiveness of public transport. Especially in larger areas like in the German Federal States of Berlin and Brandenburg, some disturbances in public transport will occur. Since public transport operators use ICTS-systems, real time information for trains, trams, and busses, is continuously increasingly available. VBB, the public transport authority of Germany's capital region of Berlin-Brandenburg, provides real time information on the Internet and via mobile devices, and a cross-operating connection management fromaround 13 different ICTS systems covering 25 operators.