SNCF Logistics entire Paris-Rouen-Le Havre railway line. In 1925 the company incorporates, becoming the Société des Transports Rapides Calberson. In 1932 France Domicile Transport (FTD) acquires a majority share in the company, and it becomes Société Nouvelle des Transports Rapides Calberson (SNTR). In 1955 it is acquired by the SNCF road transport subsidiary Sceta. With state backing the company expanded, acquiring Schenker France in 1966, and beginning overseas operations. In 1984 the company, as Compagnie Générale Calberson (CGC) had its shares publicly offered on the Paris stock exchange. In 1995 Calberson, along with its overseas operations, as well as the company Bourgey-Montreuil,
SNCF Class BB 12000 engines can support a very large overload current of 1800 amps, well over the 1000 amp design. They suffered very little wheel slip; they could pull 1756 tonnes trains on a 10 ‰ grade and 2885 tonnes trains on a 5 ‰ grade. The locomotives had few flaws, none of which related to the electrical components. They had cramped cabins, poor braking and couldn't work as multiple-unit sets. SNCF Class BB 12000 The SNCF Class BB 12000 were electric locomotives operated by SNCF. The first examples arrived on the railway in 1953, operating on the 25 kV 50 Hz line