Motorways in Serbia are called autoput (Serbian Cyrillic: аутопут), a name which simply means auto road.
The system has inherited much from the former Yugoslavia. Pay-tolls (putarine) remain in place and the speed limit is 120 km/h (75 mph).
The highways were originally marked with yellow-colour hard shoulder lines and some of these remain in place, they are, however, slowly being phased out and replaced with white. The motorway roadsigns maintain their green colour background, a feature shared with Switzerland, Italy, Denmark, Sweden, Greece, Lithuania, the Czech Republic, Slovakia and the United States as well as the other former Yugoslav republics. The roads are on the whole straight with good surfacing, and better maintained than the national roads.
Roads that are motorways or will be replaced with motorways in future are categorized as state highways, class Ia and are marked with one-digit numbers. As of 2017, there are 717.86 km of motorways (Serbian: аутопут / autoput) in total. Motorways in Serbia have three lanes (including emergency lane) in each direction, signs are white-on-green, and the normal speed limit is 120 km/h.
As the Serbian word for motorway is "autoput", the "A1", "A2", "A3", "A4" or "A5" road designations are used since 2013.
The A1 motorway runs from the Horgoš border crossing with Hungary (for Röszke), passing Belgrade (A3 and A2 junction), Kruševac (A5 junction), Niš (A4 junction), and continues to the main border crossing with the Republic of Macedonia, Preševo-Tabanovce near Bujanovac.