 Last section was opened in 1985 and it was last 21 km between Ćuprija and Pojate.Motorway goes through hilly terrain southern of Belgrade and then, near Smederevo enters the valley of Great Morava and later South Morava, passes by Jagodina, Ćuprija, Paraćin and Aleksinac and enters a basin near of Niš.Few km southwards Trupale interchange with A4 motorway which goes north of Niš, then passes Pirot, and goes to border with Bulgaria, while A1 motorway goes south by Južna Morava river.