From the passenger conduct to the advertisements on the train, see how things have changed since the subway opened in 1904, ...

A lot has changed on the subway in the last 45 years, including stations, train cars, platforms, and even how we pay. But one thing that hadn't changed is the subway map. That is, until now.

About 85 percent of New York City’s subway system still operates with this analog signal system. The outdated equipment is no longer manufactured and has to be manually operated, around the clock.