In Serbia , less than 800 km of the total length of roads is class-IA state roads .
Total length of roads is 45,419 km of which 891 km are `` class-IA state roads '' ( i.e . motorways ) ; 4,481 km are `` class-IB state roads '' ( national roads ) ; 10,941 km are `` class-II state roads '' ( regional roads ) and 23,780 km are `` municipal roads '' .
Serbia