* U-Bahn, for the subways (underground & aerial)
* S-Bahn, for sub-urban lines (mostly aerial)
* Traway in est-Berlin
A map, live or not need at least to combine the U-Bahn and the S-Bahn, (and if possible the tramway too), because you generally need to use both networks (with the same ticket) to travel. Staying in only one of the network is just not practical.