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This paper seeks to analyze some of the legal and economic aspects of Uber's service in the Brazilian market. For that, we explore efficiency and welfare issues, going through the question of urban mobility and introducing the controversial legal concept of public service. By deconstructing the idea that individual passenger transportation by taxi is included in the broad spectrum of activities that are encompassed by the definition of public service and establishing that, at least in principle, said venture should be subject to the constitutional rule of free enterprise, 1 Mestre em Direito. 2 Doutorando em Economia pela Universidade de Brasília. 3 Doutoranda em Economia pela Universidade de São Paulo. 4 Doutor em História. Artigo original Hegemonia – Revista Eletrônica do Programa de Mestrado em Direitos Humanos, Cidadania e Violência/Ciência Política do Centro Universitário Unieuro ISSN: 1809-1261 UNIEURO, Brasília, número 23, Janeiro a Junho de 2018, pp. 160-177. we demonstrate, mathematically, drawing from social choice theory, that the aggregate benefits deriving from Uber's legalization exceeds its related costs. Considering Brazilian's institutional environment, we conclude that Uber's presence in the country is legal. Accordingly, our underlying economic assumptions allow us to conclude that Uber's service adds to welfare.

UBER: Aspectos legais e econômicos na prestabilidade do serviço no mercado brasileiro