The chip in the card also allows you to tap automated kiosks for subway and train tickets, which is a time-saver if there are long lines at the ticket counter.

你可以用卡内的芯片在地铁和火车站的自动售票亭购买车票。 当售票窗口前排起长队时，这个可是节省时间的利器。

youdao

Those include a pilot program to test the use of platform barrier doors on the L subway line, and a vow to explore the installation of an automated warning system that would alert train controllers when a person is on the tracks.

WSJ: New York Subway Deaths Remain Rare