In the Southeast Region of the country, the highway is a
dual carriageway for 850 km between Curitiba in the south and Guapimirim in the north. This dual carriageway begins south of São Paulo and ends north of Rio de Janeiro thus connecting the two largest cities in Brazil. Between Curitiba and São Paulo its official name is
Rodovia Régis Bittencourt. Between São Paulo and Rio de Janeiro its official name is
Rodovia Presidente Dutra. The highway is a dual carriageway for the 70 km between Guaíba and Novo Hamburgo. In November 2022, 148 km of the planned 211 km between Guaíba and Pelotas had been converted to a dual carriageway, with work continuing on the remaining portion. Between Curitiba and Mandirituba, in the state of Santa Catarina, it is a dual carriageway. In the Northeast Region of the country, the highway is a dual carriageway for the 76 km between
Feira de Santana and Argoim. There is some dual carriageway near
Fortaleza,
Ceará. ==Privatization==