KVB operationalises third phase of Nord-Süd Stadtbahn project in Köln, Germany December 14, 2015 | Europe News Kölner Verkehrs-Betriebe (KVB) has operationalised the third phase of the Nord-Süd Stadtbahn project in Köln, Germany. The third phase comprises a 2.4-km section that branches off from ... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password