The MTA subway is a rapid transit system serving New York City. Operated by the Metropolitan Transportation Authority, it consists of 24 lines and over 400 kilometers of track, making it one of the largest subway systems in the world. The subway connects various neighborhoods and boroughs, providing an essential mode of transportation for millions of daily riders. Trains run 24 hours a day, with varying frequencies depending on the time and line. The system features iconic elements like the subway map and the famous New York City Transit Authority logo. Accessibility and safety measures are continually being improved to enhance the rider experience.