Line 8 (Diamond) (), formerly Line B (Gray), is one of the thirteen lines that make up the
São Paulo Metro Rail Transport Network in
Brazil
Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is the world's List of countries and dependencies by area, fifth-largest country by area and the List of countries and dependencies by population ...
and one of the three lines operated by
ViaMobilidade
ViaMobilidade is a company in Brazil belonging to CCR S.A., Companhia de Concessões Rodoviárias, being responsible for the operation, maintenance and investments in Line 5 (São Paulo Metro), Line 5–Lilac, Line 8 (CPTM), Line 8–Diamond and L ...
.
The line was previously operated by
Fepasa, and subsequently by
CPTM
The Companhia Paulista de Trens Metropolitanos (CPTM) () is one of the rapid transit companies serving the city of São Paulo, alongside the São Paulo Metro, Via Quatro and Via Mobilidade, all four forming the largest metropolitan rail transpo ...
. Since 27 January 2022,
ViaMobilidade
ViaMobilidade is a company in Brazil belonging to CCR S.A., Companhia de Concessões Rodoviárias, being responsible for the operation, maintenance and investments in Line 5 (São Paulo Metro), Line 5–Lilac, Line 8 (CPTM), Line 8–Diamond and L ...
has been operating it under a contract for 30 years, along with
Line 9-Emerald.
Stations
Amador Bueno Extension
Mairinque Extension

Since the establishment of suburban trains in the late 1920s, their services have connected São Paulo to the city of Mairinque. With the creation of
Fepasa in 1971, the suburban section was transferred to the Regional Suburbs Unit. This regional unit was expanded in the 1970s and transformed into a Metropolitan Regional Division (DRM).
In the 1980s, the service underwent some renovations, with the introduction of the
Toshiba trains renovated in
Rio Claro and the construction or renovation of the existing stops between Mairinque and Amador Bueno, equipped only with shelters and "humps" for easy boarding of passengers. The service was officially known as "Trem de Mairinque" and nicknamed "Mairinquinho". In 1987, the city of São Roque even considered an agreement with Fepasa for the integration of trains with the bus network of the then public company SanTC (São-Roquense de Transportes Colectivos), but the proposal did not move forward.
See also
São Paulo Metropolitan Trains
The São Paulo Metropolitan Train is a public transit rail system implanted in Greater São Paulo, serving 23 of its 39 municipalities. It has of length, 7 lines and 96 stations, transporting approximately 3 million passengers per day. Currently, ...
References
External links
Official page of the CPTMSecretaria dos Transportes Metropolitanos
{{Authority control
Companhia Paulista de Trens Metropolitanos
CPTM 08