The "MetroNetz"
A tram and bus-based core city network not to be confused with the underground system
To supplement the underground and urban rail systems, a tram and bus-based core city network was expanded and renamed the "MetroNetz" in 2004.
This expansion transport network shortens travel times for passengers.
The lines run at least 20 hours a day at 10-minute intervals, often at even shorter intervals. The "MetroNetz" system consists of trams, which are called "MetroTrams", and buses, which are called "MetroBuses". This core city network also includes twelve "ExpressBus" lines.