M2 Yenikapı - Hacıosman Metro Line

The M2 line, located on the European side of Istanbul, is a metro line extending from Yenikapı to Hacıosman. Thanks to its high capacity, it plays a significant role in urban transportation, serving an average of 500,000 passengers daily.

Construction of the line began in 1992, with its opening carried out in stages. The first phase opened on 16 September 2000 between Taksim and Levent. Immediately following this, the Levent–4. Levent section was activated on 31 October 2000. As part of the second phase, the Taksim–Şişhane and 4. Levent–Atatürk Oto Sanayi sections opened on 30 January 2009. The northern extension was completed with the addition of Darüşşafaka station on 2 September 2010, Seyrantepe station on 11 November 2010, and the final station, Hacıosman, on 9 July 2011. The southern extension reached its final form with the opening of Yenikapı station on 15 February 2014 and the Vezneciler–İstanbul Üniversitesi station on 16 March 2014.^【1】 

The M2 line is 23.49 kilometres long and has 16 stations. The one-way journey takes approximately 32 minutes. Operating hours are set between 06.00 in the morning and 00.00 at night. The line operates with a fleet of 192 vehicles, and on the main route between Yenikapı and Hacıosman, trains run at intervals of approximately 3 minutes and 55 seconds. Additionally, transfers are available at Sanayi Mahallesi station to the Seyrantepe Mekik service, with trains on this segment running at intervals of approximately 8.5 minutes. Most stations are constructed underground in tunnel form, with the exception of Haliç station, which is built on a viaduct over the Haliç Metro Bridge.^【2】 

Passenger safety and operational security are top priorities on the M2 line. Scenarios for potential adverse situations have been developed and regularly tested through simulations. All stations are under continuous surveillance via camera systems and security personnel. The line is equipped with state-of-the-art fire detection and suppression systems. All materials used in construction were selected for their resistance to high temperatures and their ability to avoid emitting toxic gases during combustion. In the event of an emergency, a tested and proven smoke control and evacuation system ensures safe passenger evacuation. The line’s signalling, switch, and vehicle systems operate fully automatically but can be manually operated when necessary. Power is supplied from two separate sources; if both are interrupted, generators activate within 15 seconds to ensure trains reach the nearest station. In the rare event that the generators also fail, lighting and electronic control systems continue to operate uninterrupted for three hours via uninterruptible power supplies (UPS).

^{M2 Yenikapı - Hacıosman Metro Hattı (}Metro İstanbul⁾

At Yenikapı station, the starting point of the line, transfers are available to the M1A Atatürk Airport and M1B Yenikapı-Kirazlı metro lines, the T6 Sirkeci-Kazlıçeşme tramway line, and the Marmaray system. At Vezneciler–İstanbul Üniversitesi station in the Historic Peninsula, transfers are possible to the T1 Kabataş-Bağcılar tramway line. At Haliç station, connections are provided to the T5 Eminönü-Alibeyköy tramway line. In the Beyoğlu district, Şişhane station is linked to the T2 İstiklal Caddesi tramway line and the F2 Karaköy-Beyoğlu Historic Tunnel line. Similarly, Taksim station in the city centre is integrated with the T2 İstiklal Caddesi tramway line and the F1 Taksim-Kabataş funicular. At Şişli-Mecidiyeköy station, located in a major commercial area, transfers are available to the M7 Yıldız-Mahmutbey metro line and the Metrobüs system; this Metrobüs connection continues at Gayrettepe station, which also provides access to the M11 Gayrettepe–İstanbul Airport metro line. Additionally, transfers to the M6 Levent–Boğaziçi Ü./Hisarüstü metro line are available at Levent station. Finally, at Sanayi Mahallesi station, passengers can transfer to the Seyrantepe Mekik service by moving to a separate platform area without changing systems.^【3】 

^{M2 Metro Durakları Aktarma Noktaları (}Marmaray İstanbul⁾