The Chinese company CRRC Changchun Railway Vehicles Co. Ltd has been awarded a US$301.5 million contract by the Buenos Aires City government to completely renovate the fleet of Line B of the underground metro system. This line is the most heavily used, serving approximately 180,000 daily users.
Used underground trains purchased from Spain for Buenos Aires' B Line in 2011 are now to be scrapped after finding they were made of an alloy containing carcigenous asbestos.