Izban opens Southern Line extension, Turkey February 9, 2016 | Europe News İZBAN A.Ş. has opened an extension of the Southern Line, which spans 27 km from Cumaovasi to Tepeköy, covering six stations. The service frequency is 27 minutes. Izban is a commuter rail system se... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password