The São Paulo Metro has been at the technological forefront not only in Latin America but also worldwide, since the conception of its first line in the 1960s. In 1971, the São Paulo Metro selected the American company Westinghouse Electric Corporation (WELCO) to install the
ATO (Automatic Train Operation) system, which provides fully automated train signaling and control. This system was also used by the San Francisco
BART, which at the time was considered the most modern metro system in the world. The ATO system implemented by the São Paulo Metro since its first line allowed for the fully automatic operation of trains, including the safety of train movement and the activation of doors. The train operator was only responsible for acting in case of abnormalities, announcing the next station via the public address system, and monitoring operations at stations to prevent accidents with users. In 2008, the São Paulo Metro selected Alstom Brazil to install the modern
CBTC system on all operating lines. The first to have this system working was
Line 2 - Green, which was not only the first metro line in São Paulo to operate with such a system but also the first in all of Latin America. When Sacomã station was inaugurated in 2010, this line was considered the most modern in all of the
Americas, being the first to feature
platform screen doors. Shortly after, the São Paulo Metro inaugurated
Line 4 - Yellow, the first line to operate with driverless trains, once again renewing its title as the most modern metro in Latin America. In 2022, trains operate on Line 3 with ATO signaling, however, this branch is already being modernized to
CBTC, while Lines 1, 2, 4, 5 and 15 already operate with this system, with lines 4 and 15 being driverless (UTO). ==Bus terminals==