WHAT DOES WAS SIND GEKLONTE KREDITKARTEN? MEAN?

Berlin's U-Bahn and S-Bahn bear the scars of a long time of partition and of article-reunification deficiency of funds. They originated like a hodgepodge of lines with distinctive loading gauges created by personal corporations and after that-unbiased cities. Routes are indicated by amount as well as the identify in their endpoint, so memorise them