State Road 22, commonly known as Ibar Highway (Serbian: Ибарска магистрала, Ibarska magistrala), is an IB-class road, connecting Belgrade with Šumadija and Western Serbia and finally with Montenegro at Špiljani border crossing.

In order to provide the safer and faster traffic link of Belgrade with Western Serbia and Montenegrin coast, and to alleviate the dangers of the Ibar Highway, the new A2 motorway is under construction from Čačak to border with Montenegro.

[4] In three-year span from 2017 to 2019, a total of 1,736 traffic accidents happened on its route, with 86 deaths and 1,619 injured people.

[3] Before the completion of motorway on section from Belgrade to Čačak, with more than 18,000 vehicles passing the highway daily (as of 2016), it was one of the most frequent roads in Serbia.

[5] Often called the "black highway", it is considered the most dangerous road in Serbia, averaging several hundreds traffic accidents annually.