The São Paulo Metropolitan Ferroanel (also known as Ferroanel) is a Railway Connection Project between the main railways that cross metropolitan region in São Paulo. The project is complementary to Rodoanel and will use part of its geometric design to soften the environment interventions. Ferroanel will have 2 lines: North line (Eng. Manoel Feio station — Campo Limpo Paulista station) with an extension of 66km and south line (Evangelista de Souza station — Rio Grande da Serra station) with an extension of 55,3 km.

CJC works in the development of the functional design in Ferroanel north tunnels.

 Source: https://pt.wikipedia.org/wiki/Ferroanel_Metropolitano_de_S%C3%A3o_Paulo