 In August 2006 , the MTA revealed that all future subway stations , including ones built for the Second Avenue subway , the 7 Subway Extension , and the new South Ferry station will be outfitted with air @-@ cooling systems to reduce the temperature along platforms by as much as 10 ° F ( 6 ° C ) . The Second Avenue Subway was also to have platform screen doors to assist with air @-@ cooling and ventilation , but this plan was scrapped in 2012 as cost @-@ prohibitive . 
