Buenos Aires Underground 300 Series
The 300 Series are a set of underground cars manufactured by Alstom in Brazil for use on the Buenos Aires Underground. They are used on Line H of the network, and more have been introduced on Line D where they operate alongside the similar 100 Series. History The 300 Series cars were initially ordered for Line H in 2012 with an initial order of 120 cars at a cost of US$ 216 million. These were to be delivered in 2015 and produced solely in Alstom's plant in São Paulo, unlike the 100 Series which also had components produced in Argentina. These were to be put into service once the Córdoba, Santa Fe and Las Heras stations were opened. On Line H, the cars replaced the Siemens-Schuckert Orenstein & Koppel cars which had served on every line of the system, with the exception of Line B, at different times since 1934. When Line H was originally opened, it was not deemed necessary to purchase new stock until it had been extended enough and passenger numbers were at a level where new rolling stock was warranted. Thus the Siemens O&K cars were brought out of retirement temporarily. In July 2016, 36 of