The Brazilian Highway System (Portuguese: Sistema Nacional de Rodovias) is a network of trunk roads administrated by the Ministry of Infrastructure of Brazil (MINFRA). It is constructed, managed and maintained by the National Department of Transport Infrastructure (DNIT), federal agency linked to the Ministry of Infrastructure, and the public works departments of state governments. The National Travel System (Portuguese: Sistema Nacional de Viação – SNV) comprises the road infrastructure and the operational structure of the different means of transporting people and goods. As for jurisdiction, the national road system is composed of the Federal Road Traffic System (Portuguese: Sistema Federal de Viação – SFV) and the road systems of the States, the Federal District and the Municipalities. The Investment Partnership Program (PPI) is a major effort to expand and upgrade the network of highways aside with the Federal Highway Concessions Program (PROCROFE). The Ministry of Infrastructure often uses a public–private partnership model for highway maintenance, and toll-collection. Currently, the longest National Highway in Brazil is BR-116 with . Characteristics , the system consists of of roads, of which approximately are paved (12.4%), and about are divided highways. The total of paved roads increased from 35,496 km (22,056 mi) in 1967 to 215,000 km (133,595 mi) in 2018, with an expansion of 0.5% between 2009 and 2019. In 2009, Brazil had of paved road and of unpaved road per inhabitant. In 2019, the Federal Highway System had , of which approximately were paved (86.3%), and was under federal concession (PROCROFE). The most important federal highways in the country are BR-101 and BR-116. Although Brazil has the largest duplicated road network in Latin America, it's considered insufficient for the country's needs: in 2021, it was calculated that the ideal amount of duplicated roads would be something around from to . The main road axes also have problems because they often have inadequate geometry and constructive characteristics that don't allow quality long-distance flow (non-interference from local traffic and high speed). The Brazilian Federal Government has never implemented a National Highway Plan at the same level as developed countries such as the USA, Japan or European countries, which specifically aimed at inter-regional travel, and which should preferably be served by highways. The Brazilian State, despite some planning efforts, has been guided by a reactive action to the increase in demand (only duplicating some roads with old and inadequate layout) and not by a purposeful