Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Otoyol 52, abbreviated as O-52, aka Adana- anl urfa Otoyolu, is a toll motorway in the regions of Mediterranean and Southeastern Anatolia in Turkey, connecting the cities Adana and anl urfa. The motorway is part of international routes as of European E90 and Asian AH84. The O-52 starts from the eastern terminus of Adana Beltway O-50, runs eastward through Osmaniye, Gaziantep and terminates north of anl urfa. The section between Nizip, Gaziantep and Y lmaz, anl urfa is still under construction.