From August 30 onwards certain metro lines and bus routes in Istanbul will be operational for 24 hours on Fridays and Saturdays, Ekrem Imamoğlu, mayor of the Istanbul Metropolitan Municipality (IBB), announced Thursday.

The mayor said select public transportation routes will offer 24-hour weekend services, making Istanbul the 8th city to offer metro services at night. The trains will reportedly serve on 20-minute intervals.

The metro lines that will operate for 24 hours are:
M1A Yenikapı-Atatürk Airport
M1B Yenikapı-Kirazlı
M2 Yenikapı-Hacıosman
M4 Kadıköy-Tavşantepe
M5 Üsküdar-Çekmeköy
M6 Levent-Boğaziçi University / Hisarüstü

However, Imamoğlu said that commuters will be charged a separate night fare — double the price of a single token/ticket — from 12:30 a.m. to 5:30 a.m. under the new scheme. All municipal transportation services will be free of charge throughout the day during national and religious holidays, including the Aug. 30 Victory Day.

The city's Bus Rapid Transit (BTS) system the Metrobus currently operates all night everyday on a 50-kilometer line from the Asian district of Kadıköy to the European district of Beylikdüzü. [SO1] In addition to the metro and metrobus, 23 bus lines will also offer "owl services" throughout the week.

The mayor said new lines could also be added if there is demand, adding that the travel scheme will continue on national and public holidays.

"We are always striving to do better... We are choosing times during which the most people commute," he said.

The change has so far generated positive responses from commuters and tourists alike.