Some U- and S-Bahn lines fell entirely into one half of the city or the other; other lines were divided between the two jurisdictions, with trains running only to the border and then turning back.
Niektoré U- and S-Bahn linky spadali celé do jednej alebo druhej polovice mesta; iné linky boli rozdelené medzi tieto dva obvody, s vlakmi ktoré premávali iba po hranicu a potom sa vracali naspäť.