The Interborough Rapid Transit Company was the private operator of New York City's original underground subway line that opened in 1904, as well as earlier elevated railways and additional rapid trans
A New York Transit Museum set of IRT Lo-Voltage motor cars at Mosholu Parkway station
The IRT Powerhouse
An old IRT sign remains at Wall Street station.
Routes of the Interborough Rapid Transit Company, 1924
The A Division, also known as the IRT Division, is a division of the New York City Subway consisting of the lines whose services are designated by numbers and the 42nd Street Shuttle. These lines and
Interborough Rapid Transit Company
…younger BMT and IND systems, to form the modern New York City Subway. The former IRT lines (the numbered routes in the current subway system) are now the A Division or IRT Division of the Subway. The first IRT subway ran between City Hall and 145th Street at Broadway, opening on October 27, 1904. It opened following…
New Technology Train, common on the subway. Note the three sets of doors per car, a feature of all current A Division trains