A check-point some hundreds of meters from Pai Mathias station towards Mayrink/Evangelista de Souza. The locomotive engineer must receive authorization from the Operational Control Center in Campinas through a satellite link in order to continue its trip from this point on. Note the automatic switching device ahead; at the right, above the hopper cars, one can see the panel of photoelectric cells that generates energy for such device, as this place is far away of public electricity supply services. Photo shot in October 19, 2002 by Antonio Augusto Gorni, from São Vicente SP.