Core Points - The Buenos Aires city government has awarded the subway B line renewal project to CRRC Changchun Railway Vehicles Co., Ltd [1] - The project involves the provision of 174 new air-conditioned train cars to replace aging vehicles that have been in service for decades [1] - The total investment for the project is approximately $302 million [1] Infrastructure Improvements - The project will also include infrastructure upgrades such as increasing power supply voltage and updating tracks and switch equipment to accommodate the new trains [1] - These improvements aim to enhance train frequency and passenger comfort [1] Impact on Passengers - The project is expected to benefit at least 180,000 daily passengers [1] - Buenos Aires Mayor Jorge Macri described the initiative as a historic step to improve the safety, comfort, and modernity of train travel for citizens and tourists [1]