The Fatih Sultan Mehmet Bridge, also known as the Second Bosphorus Bridge, is a bridge in Istanbul, Turkey spanning the Bosphorus strait. When completed in 1988, it was the 5th-longest suspension bridge span in the world.
Otoyol 31, named the İzmir-Denizli Motorway and abbreviated as the O-31 is a 127.8 km (79.4 mi) long toll motorway in western Turkey. Beginning at an intersection with İzmir Beltway, the O-31 runs south from İzmir to Aydın and parallels the D550 for most of its route.
The Yavuz Sultan Selim Bridge, also known as the Third Bosphorus Bridge, is a vehicular bridge over the Bosphorus strait, to the north of Istanbul's two older suspension bridges, the 15 July Martyrs Bridge being the First Bosphorus Bridge and Fatih Sultan Mehmet Bridge the Second Bosphorus Bridge. The bridge is located near the entrance to the Black Sea from the Bosphorus strait, between Garipçe in Sarıyer on the European side and Poyrazköy in Beykoz on the Asian side.
Otoyol 1, abbreviated as O-1 and locally referred to as The First Beltway, is a controlled access highway in Istanbul, Turkey. The O-1 serves as the inner beltway and is one of three intercontinental motorways in the city, the others being the O-2, and O-7, as well as connecting the European and Asian parts of the city via the Bosphorus Bridge.
Otoyol 2, abbreviated as O-2, locally referred to as 2.Çevreyolu, is a motorway in Istanbul, Turkey that forms the outer ring road of the city connecting European and Asian parts via the Fatih Sultan Mehmet Bridge. It starts in Mahmutbey East intersection on the European part, where the Avrupa Otoyolu O-3 links, runs through the northern outskirts of the city passing over the Bosporus Strait, and terminates at the western end of the Anadolu Otoyolu O-4, before the toll plaza is situated. Otoyol 2 is toll-free, however A two-way toll collection practice has been implemented on the Fatih Sultan Mehmet Bridge. O-2 motorway: connects O-3 European motorway in the west with O-4 Anatolian motorway in the east
Otoyol 4, named Anatolian Motorway and abbreviated as O-4, is a toll motorway connecting the northwestern Marmara Region to the Central Anatolia Region in Turkey. It runs parallel to the D.100 for more than half of its length and then parallels the D750 for most of the eastern half. The O-4 is a major expressway in Turkey as it connects eastern Istanbul and the heavily urbanized northeastern shore of the Sea of Marmara to the nation's capital, Ankara. The O-4 also makes up part of the International E-road network E80 and E89 as well as the AH-1 of the Asian Highway Network.
Çukurova motorway is the unofficial name of the motorway of Çukurova in Turkey. It is actually composed of the motorways O-51, O-53 and a part of O-52.
Otoyol 51, abbreviated as O-51, aka Adana-Erdemli Otoyolu, is a toll motorway in the Mediterranean Region of Turkey, connecting the cities Adana and Mersin. The motorway is on its full length of 99 km (62 mi) part of international routes as of European routes E90 and E982 and Asian Highway 84.
Otoyol 52, abbreviated as O-52, a.k.a.Adana-Şanlıurfa Otoyolu, is a toll motorway in the regions of Mediterranean and Southeastern Anatolia in Turkey, connecting the cities Adana and Şanlıurfa. The motorway is part of European route E90 and Asian Highway 84. The O-52 starts from the eastern terminus of The O-51, runs eastward through Osmaniye, Gaziantep and terminates east of Şanlıurfa. The O-52 is currently the second longest Motorway in Turkey being only 5 km shorter than the O-4.
Otoyol 53, abbreviated as O-53, also known as Ceyhan-İskenderun Otoyolu, is a toll motorway in Mediterranean Region, Turkey, connecting the Adana-Şanlıurfa Motorway O-52 with İskenderun. The motorway is part of international routes as European route E91 and Asian Highway 84.
Otoyol 33, O-33 or North Aegean Motorway and abbreviated as the O-33 is a 55.2 km (34.3 mi) long toll motorway in western Turkey.Beginning at an intersection with İzmir Beltway, the O-33 runs north from Çiğli to Bergama and parallels the D550 for most of its route.
Otoyol 21, abbreviated as O-21, a.k.a. Ankara-Tarsus Otoyolu, is a completed toll motorway in the Central Anatolia and Mediterranean regions in Turkey. Currently, it connects Otoyol 20 from Gölbaşı, Ankara with the Adana-Mersin Motorway O-51 at Tarsus in Mersin Province. On its full length, it is part of the European E90. The last part of the highway opened on 16 December 2020. With a length of 432 kilometres, the O-21 is the longest motorway in Turkey.
İzmir is a transportation hub for western Anatolia. İzmir has an extensive bus system, a developing metro, commuter rail system and a large urban ferry network. The city has highways connecting it to Çeşme, Menemen, Istanbul, Bursa, Aydın and Denizli as well as a beltway. Mass transportation is operated by four separate public agencies all owned by the İzmir Municipality.
The Aslanlı Tunnel, is a motorway tunnel constructed on the Adana–Şanlıurfa motorway O-52 E90 AH84 in Gaziantep Province, southern Turkey.
D.110 is a 172 km (107 mi) long east-west state road in Turkey running from the border with Greece, near İpsala, to the junction with the D.100 in Kınalı. The road is the main route into Greece and one of only two roads that cross the Greek border from Turkey. The entire route is a four-lane highway, except for the two-lane bridge crossing the Maritsa river. The D.110 is a part of the European route E84 for its entire length and part of the E90 from the Greek border to Keşan.
Otoyol 5, named the Kocaeli Gebze-Bursa-İzmir Motorway and abbreviated as O-5, is a toll motorway in Turkey. Since being completed in 2019, it connects the Istanbul and Kocaeli metropolitan areas with İzmir, via Bursa and Balıkesir. The O-5 runs parallel to the D575 and the D565 for most of its length and is a major motorway in Turkey as it provides a direct connection between Kocaeli and its surrounding metropolis to the country's 3rd largest (İzmir) and 4th largest (Bursa) cities, bypassing the Gulf of İzmit via the Osman Gazi Bridge. The O-5 also makes up part of the International E-road network E881 thus making it one of the most extensive and expensive transport megaprojects.
The Ayran Tunnel, is a motorway tunnel constructed on the Adana–Şanlıurfa motorway O-52 E90 AH84 in Osmaniye Province, southern Turkey.
The Otoyol is the national network of controlled-access highways in Turkey. The term Otoyol translates to motorway while the literal meaning is auto-route. The Otoyol was first opened in 1973.
The Otoyol 7, or Northen Marmara Motorway(Turkish: Kuzey Marmara Otoyolu), is a toll motorway in Turkey that bypasses Istanbul to the north. The motorway is 248 km in length between the Kınalı junction and the Akyazı junction, and is 8 lanes wide .Within the scope of the Build-Operate-Transfer Model Construction, Operation and Transfer of Kınalı-Odayeri Section and Kurtköy-Akyazı Section of the Northern Marmara Motorway Project, it is composed of two separate authorized companies, namely "AVRUPA OTOYOLU YATIRIM VE İŞLETME AŞ". on the European Side and "KMO ANADOLU OTOYOLU İŞLETME AŞ". on the Asian Side.
E80 
AH1 and 
AH5 
D.100 west Edirne 
O-7 in Kınalı K10, Silivri 
O-2 in Mahmutbey Doğu K20 Bağcılar, Istanbul 
O-3 
D.535 connector Lalapaşa junctionn
D.020 connector Havsa junction
D.555 connector 
D.565 connector Lüleburgaz junction
D.567 connector Çerkezköy junction
E84 
D.110 
D.569 — Çatalca junction
P.34-84 — Hadımköy junction
