Locally known as the 2. Çevreyolu or the TEM (Trans-European Motorway), this highway forms Istanbul's second beltway . It crosses the Bosphorus via the Fatih Sultan Mehmet Bridge and serves as the primary route for long-distance transit and heavy commercial traffic .
The primary connection occurs at the Ataşehir/Ümraniye junction, allowing travelers to move from the outer ring road back into the heart of the Anatolian side . Comparison of the Two Routes Otoyol 2 (O-2 / TEM) E5 (D-100) Primary Use High-speed transit, heavy trucks Local commuting, Metrobus Bridge Connection Fatih Sultan Mehmet Bridge 15 July Martyrs Bridge Environment Northern outskirts, industrial Central urban residential/commercial Toll Status Toll-free (except for the bridge) Generally toll-free If you need a more formal technical paper, Otoban 2 A E5 Otoban 2
The roads typically intersect near Mahmutbey , a major junction where the O-2 meets the O-3 and links back toward the E5 . Locally known as the 2
This is the city's inner "stroad" that carries the Metrobus system . While originally a highway, it now functions as a central urban artery passing through densely populated residential and business districts like Kadıköy and Beyoğlu . Key Connection Points While originally a highway, it now functions as