The Southern Line (Turkish: Güney hattı) is an electrified commuter rail line running south from Alsancak Terminal in Izmir to Torbalı operated by İZBAN, using trackage owned by the Turkish State Railways. The route services the densely populated areas of western Buca and central Gaziemir as well as Adnan Menderes International Airport via the rebuilt airport station. Between 2010 and 2016 the southern terminus of the line was Cumaovası near Menderes. On 6 February 2016, the line was extended about 30 km (19 mi) south to Tepeköy in Torbalı and on 9 September 2017 extended further south to Selçuk.