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, used on Line H and also on Line D, where they operate alongside the similar 100 Series. The cars were initially ordered for Line H in 2012, an initial order of 120 cars at a cost of 216 million US dollars, 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. In July 2016, 36 of the cars were put into service on Line H, leading to the withdrawal of the Siemens cars, and the rest were put into service gradually until 2017. In late 2014 the order was expanded by 50 percent to add 60 cars for Line D to replace the ageing Fiat-Materfer cars built in the early 1980s. The cars are designed to work with communications-based train control, and have security cameras, audio warnings for approaching stations, air conditioning, an anti-climbing system and black boxes in the conductor's cabins.