Provincial road 34-12 (Turkey)
 |
| İl yolu 34-12 | |
|---|---|
| O1-O2 bağlantısı | |
| Route information | |
Part of    E80 / E89 / AH1 | |
| Length | 6.9 km (4.3 mi) |
| Existed | 1991–present |
| Major junctions | |
| West end |  O-1 in Üsküdar, Istanbul |
| East end |   O-2 / O-4 in Ataşehir, Istanbul |
| Location | |
| Country | Turkey |
| Regions | Marmara |
| Provinces | Istanbul |
| Major cities | Istanbul |
| Highway system | |
Provincial road 34-12 (Turkish: İl yolu 34-12), named the O1-O2 connector (Turkish: O1-O2 bağlantısı) is a 6.9 km (4.3 mi) long motorway in Istanbul, Turkey. The motorway is a connector route linking the motorway O-1 (Istanbul Inner Beltway) to the motorway O-2 (Istanbul Outer Beltway), where it becomes the O-4 (Anatolian Motorway). The route is one of two motorways linking the two beltways on the Asian side of the city, the other being the Şile Motorway.
The O1-O2 connector was opened in 1991.
Route description[edit]
The O1-O2 connector begins at Anadolu Interchange in Üsküdar, where it diverges from the O-1. The two-lane motorway heads east right on the border of the Ataşehir/Üsküdar and later the Ataşehir/Ümraniye district line.