M3 (Istanbul Metro)

M3 Bakırköy Sahil – Kayaşehir Merkez
M3 Alstom Metropolis AM4 Train at Kayasehir Merkez Station
Overview
StatusOperating
OwnerIstanbul Metropolitan Municipality
Line numberM3
LocaleIstanbul, Turkey
Termini
Stations20[1]
WebsiteM3
Service
TypeRapid transit
SystemIstanbul Metro
Services1
Operator(s)Metro Istanbul A.Ş.
Depot(s)Olimpiyatköy
Rolling stock80 Alstom Metropolis[1]
4 carriages per trainset
History
Opened
  • 14 June 2013 (2013-06-14)
    Kirazlı - Başakşehir/MetroKent
  • 8 April 2023 (2023-04-08)
    Başakşehir/MetroKent - Kayaşehir Merkez
  • 10 March 2024 (2024-03-10)
    Kirazlı - Bakırköy Sahil, except Yıldıztepe
  • 8 October 2025 (2025-10-08)
    Yıldıztepe
Technical
Line length26.7 km (16.6 mi)
Number of tracks2
Track gauge1,435 mm (4 ft 8+1⁄2 in) standard gauge
Electrification1,500 V DC Overhead line
Operating speed80 km/h (50 mph)
Route map

 Kayaşehir Merkez M11 (Istanbul Metro)
Toplu Konutlar
Şehir Hastanesi
Menekşe Deresi
 Onurkent
MetroKent
Başak Konutları
Siteler
Turgut Özal
depot
connection to Line M9
 İkitelli Sanayi Line M9
İSTOÇ
O3-TR sign.svg O-3
 Mahmutbey Line M7
Yenimahalle
Line M1B
 Kirazlı Line M1
Line M1B
 Molla Gürani
Yıldıztepe
İlkyuva
Haznedar
D100-TR.svg D.100
 Bakırköy—İncirli Line M1 Line M2 İncirli (Metrobus)
Line M1A
to Halkalı
 Özgürlük Meydanı Bakırköy railway station
to Gebze
 Bakırköy Sahil İDO

The M3, officially referred to as the M3 Bakırköy Sahil–Kayaşehir Merkez Metro Line (Turkish: M3 Bakırköy Sahil-Kayaşehir Merkez Metro Hattı), is a 26.7-kilometre (16.6 mi), 20-station[1] rapid transit line of the Istanbul Metro system on the European part of Istanbul, Turkey. It operates between Bakırköy Sahil and Kayaşehir Merkez. The line is colored light blue on station signs, route signs and the official rapid transit network map.[1]

Construction

The construction of the line began in 2006 following the signing of the related contract in May of that year. By March 2009, the tunnels were completed.[1] The first train for the line was delivered on 29 October 2008,[2][3] and in December 2010, the first test run of the trains was accomplished.[1] The line's operation rights were transferred from the İETT bus authority to İstanbul Ulaşım (now Metro İstanbul) in June 2011.[1] After the line's signalization system was completely installed in March 2012, test runs began in June 2012.[1] The line started operating unofficially from Kirazlı to Metrokent on 10 September 2012,[4][5] and officially entered service on 14 June 2013.[6][7] The branch line to Olimpiyat later opened on 22 November 2013.[1] The Ikitelli-Olimpiyat branch was converted into the M9 in May 29, 2021.[8] The northern extension to Kayaşehir Merkez was opened on 8 April 2023,[9] while the southern section from Kirazlı to Bakırköy Sahil was inaugurated on 10 March 2024.[10] Yıldıztepe station, on the section between Kirazlı and Bakırköy Sahil, opened on 8 October 2025.[11]

Özgürlük Meydanı, Haznedar, İlkyuva, Onurkent, Toplu Konutlar and Kayaşehir Merkez stations are bored in situ without removing the ground above, while all other underground stations on the line are built by cut-and-cover method, constructed in a shallow trench and then covered over. The line's tunnels are twin tubes. The Kirazlı-Metrokent and Kirazlı-Bakırköy Sahil sections was constructed by tunnel boring machine (TBM).

Technical features

The M3 line is 26.7 kilometres (16.6 mi) long, serving 20 stations in total. The operation control center of the M3-line is situated in MetroKent. The rolling stock and maintenance depots are located in Olimpiyatköy beyond Olimpiyat Parkı Terminal, stretching over an area of (70,000 m2 (750,000 sq ft)). The rolling stock depot is capable of holding 180 cars. The maintenance workshop occupies a covered area of 10,000 m2 (110,000 sq ft).[1]

The rolling stock was delivered by the French company Alstom. The fully air-conditioned cars, costing each €1.149 million, feature seats covered with antibacterial textile material. It is possible to pass from one car to another in a train to enable a homogeneous distribution of the passenger crowd.[12]

A total of 80 cars, 20 sets of four-car trains, are able to transport up to 70,000 passenger per hour per direction between the operating hours from 6:00 h in the early morning to 0:00 h in the midnight. The ride between the terminals Bakırköy Sahil and Kayaşehir Merkez takes 39 minutes. The trains run every five minutes during rush hours.[1]

Safety

All the stations are equipped with closed-circuit video system for continuous monitoring of the platforms. High-level fire safety systems, which include automatic fire extinguishers and fire exits, are installed in the metro line, where non-flammable and fireproofing materials were used.[1]

Power supply of the line is provided at two different points. In case of power cut at both supply points, an emergency power system that becomes operational within 15 seconds, ensures running of the trains until the next station. If the backup generator system fails, an uninterruptible power source (UPS) supplies energy for emergency lighting and the electronic devices at the operations control center up to three hours. The signalization of the metro line as well as at the depots and railroad switches, also the vehicle drive-control systems are fully automated. However, they can be handled manually when needed.[1]

Stations

All stations are underground.

No Station District Transfer Notes
1 Bakırköy Sahil Bakırköy Ferries in Istanbul (Bakırköy Terminal) Rauf Orbay St・Ataköy Marina・Galleria・Kennedy St
2 Özgürlük Meydanı Marmaray・High Speed Train (YHT) (Bakırköy Train Station)
İETT Bus: 50B, 71T, 72T, 94A 73B, 76, 76B, 76C, 76V, 76Y, 79B, 89YB, 98, 98A, 98AB, 98B, 98D, 98E, 98G, 98H, 98K, 98M, 98MB, 98S, 98T, 98TB, 98Y, 146, E-57 		Bakırköy Özgürlük Square・İncirli St・Yusuf Köksal Park・Bakırköy Anadolu imam hatip high school
3 İncirli Line M1・Line M2 (planned)・Metrobus (Istanbul)
İETT Bus: 31, 31E, 50B, 71T, 72T, 73, 73F, 76D, 78ZB, 79G, 79Ş, 82, 89, 89A, 89B, 89K, 89M, 89S, 92, 94Y, 97, 97A, 97BT, 97E, 97KZ, 97T, H-9, HT13, MK97 		Hatice Küçük Park・Bakırköy Adalet Sarayı・İsmail Erak Boulevard・Botanik Park
4 Haznedar Güngören İETT Bus: 36CY, 92, 97T, 98D, 98G, 98Y, MK97 Güngören Park・Naci Kazım St・Naci Kazım Park
5 İlkyuva Bahçelievler İETT Bus: 36CY, 92, 98D, 98Y Bağcılar Street・Bahçelievler İSKİ Build
6 Yıldıztepe Bağcılar İETT Bus: 36CY, 92, 98D, 98S, 98Y Bağcılar St・Kıbrıs St・Bağcılar Anadolu High School・Bağcılar Yıldıztepe Primary School・Hoca Ahmet Yesevi Middle School
7 Molla Gürani İETT Bus: 98K, HT10, HT11 Molla Gürani Park・Mehmet Akif Boulevard・Yıldıztepe Park
8 Kirazlı Line M1・HızRay (planned)
İETT Bus: 92K, 98K, HT10, MK42
9 Yenimahalle İETT Bus: 92, 92B, 92K, 92Ş, 97G, 98D, 98K, HT13 15 Temmuz Şehit Ramazan Sarıkaya Park・Dökumcüler Street
10 Mahmutbey Line M7
İETT Bus: 141K, 141M, 144M, 89C, 89T, 91E, 97E, 97GE, 97M, 98A, 98M, H-1, HT10 		Maslak Street・İnönü Street・Bosna Street
11 İSTOÇ İETT Bus: 143, 146B, 146K, 146M, 31Y, 76O, 78, 89F, 98M İSTOÇ
12 İkitelli Sanayi Başakşehir Line M9
İETT Bus: 31Y, 82S MK31 		Line M9 free transfer
13 Turgut Özal İETT Bus: 31Y, 78B, 78Ş, 82S, 98KM, 146K, 146M, MK31 Evren Sanayi Site・Süleyman Demirel Boulevard
14 Siteler İETT Bus: 143, 146B, 146K, 146M, 78C, 79E, 82S, 98KM Atatürk Bulvarı
15 Başak Konutları İETT Bus: 78ZB, 89C, 98, 98KM, 143 Prof.Dr Necmettin Erbakan Street・Başakşehir 1.Etap Yürüyüş Yolu Park
16 MetroKent Havaist Bus Transfer
İETT Bus: 78, 78BE, 78F, 89C, 98H, 98KM, 146B, MK1, MK22 		Metrokent Residences
17 Onurkent Başakşehir İETT Bus: 78E, 78F, 78ZB, 89C, 98, 146B, 146K Onurkent Park・Mimar Kemalettin Street・Akif İnan Anadolu İmam Hatip Lİsesi
18 Şehir Hastanesi İETT Bus: 36F, 78E, 78F, 78Ş, 79B, 79E, 79F, 79FY, 79GE, 79KM, 79KT, 79T, 146BA, 146F, HS1, HS2, MK1, MK2, MK22, MR50 Başakşehir Çam and Sakura City Hospital
19 Toplu Konutlar İETT Bus: 36AS, 78E,78G, 78Ş, 79B, 79C, 79E, 79F, 79G, 79K, 79KM, 79KT, 79T, 79Y, MK11 Kayaşehir Boulevard・Kayaşehir Millet Bahçesi
20 Kayaşehir Merkez M11 (Istanbul Metro) (under construction)
İETT Bus: 36F, 78F, 79F, 79FY, 79GE, 79KM, 79KT, MK22 		Kayaşehir Boulevard・Başakşehir Millet Bahçesi

Rolling stock

This line is operated by Alstom trains which are visually similar to the AM5-M2 and AM4-M4 trains also built by Alstom that operate on the Budapest Metro. The main difference is that the Istanbul units are equipped with pantographs for overhead line operation only while the Budapest units are equipped with shoegear for third rail operation only.[1]

  • M3 Metro Train
    M3 Metro Train
  • M3 Mahmutbey Metro Station
    M3 Mahmutbey Metro Station
  • M3 Mahmutbey Metro Station
    M3 Mahmutbey Metro Station

See also

References

  1. ^ a b c d e f g h i j k l m n "M3 Başakşehir Metro Hattı" (in Turkish). İstanbul Ulaşım. Archived from the original on 5 October 2015. Retrieved 2015-12-11.
  2. ^ "The Municipality of Istanbul exhibits the new metro delivered by Alstom". Alstom. Retrieved 2026-01-12.
  3. ^ International, Railway Gazette. "Istanbul metro expands". Railway Gazette International. Retrieved 2026-01-12.
  4. ^ "Başakşehir-Kirazlı Metrosu Açıldı". Duble Yol (in Turkish). 2012-09-11. Archived from the original on 14 September 2012. Retrieved 2013-11-15.
  5. ^ International, Railway Gazette (14 September 2012). "Istanbul opens line M3". Railway Gazette International. Retrieved 2026-01-12.
  6. ^ "İstanbul'a yeni metro". Sabah (in Turkish). 2013-06-14. Retrieved 2013-11-15.
  7. ^ "İstanbullular yeni metro hattına kavuşuyor..." (in Turkish). İstanbul Büyükşehir Belediyesi. 2013-06-13. Retrieved 2013-11-15.
  8. ^ International, Metro Report. "Istanbul opens metro Line M9". Railway Gazette International. Retrieved 2026-01-12.
  9. ^ International, Metro Report. "President opens Istanbul metro M3 extension". Railway Gazette International. Retrieved 2026-01-12.
  10. ^ "Bakırköy-Kayaşehir Metro Hattı". metro.istanbul (in Turkish). Archived from the original on 2025-12-16. Retrieved 2026-01-12.
  11. ^ "Yıldıztepe İstasyonu Hizmete Açılıyor". metro.istanbul (in Turkish). Archived from the original on 2025-11-16. Retrieved 2026-01-12.
  12. ^ "İstanbul'a 68 tane hijyenik metro aracı" (in Turkish). İstanbul Büyükşehir Belediyesi. 2007-10-02. Retrieved 2013-11-15. |
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