The New York City Transit Authority (also known as NYCTA, The TA or simply Transit, and branded as MTA New York City Transit) is a public authority in the U.S. state of New York that operates public transportation in New York City. Part of the Metropolitan Transportation Authority, the busiest and largest transit system in North America, the NYCTA has a daily ridership of 7 million trips (over 2 billion annually). The NYCTA operates the following systems: As part of establishing a common corporate identity, the Metropolitan Transportation Authority in 1994 assigned popular names to each of its subsidiaries and affiliates. The New York City Transit Authority is now known popularly as MTA New York City Transit (NYCT), (or more specifically on the vehicles, MTA New York City Bus and MTA New York City Subway), though the former remains its legal name for documents and contracts. Newer contracts and RFPs, however, have also used the popular name.