Question: The New York City Board of Transportation was commission and operating of what complex infrastructural system?

<P0-S0> 370 Jay Street, also called the Transportation Building or Transit Building, is an office building located at the northwest corner of Jay Street and Willoughby Street in the MetroTech Center area of Downtown Brooklyn, New York City. <P0-S1>  The site is bound by Pearl Street to the west, and was formerly bound by Myrtle Avenue at its north end; this portion of the street has since been de-mapped. <P0-S2>  The site has historically served as the headquarters for the operating agency of the New York City Transit System, built by the New York City Board of Transportation (BOT) and later housing the New York City Transit Authority and Metropolitan Transportation Authority (MTA), which succeeded the BOT. <P0-S3>  The building is notable for housing the revenue-collecting operations of the New York City Subway, performed by money trains connected to the lower levels of the building via passageways to nearby subway lines. <SEP> <P1-S0>  New York City, being the most populous city in the United States, has a transportation system which includes one of the largest subway systems in the world; the world's first mechanically ventilated vehicular tunnel; and an aerial tramway. <P1-S1> The transportation system of New York City is a network of complex infrastructural systems. <P1-S2>  New York City's airport system, which includes John F. Kennedy International Airport, LaGuardia Airport, Newark Liberty International Airport (located in New Jersey), Stewart Airport and a few smaller facilities, is one of the largest in the world. <P1-S3>  New York City is also home to an extensive bus system in each of the five boroughs, and numerous taxis throughout the city. <SEP> <P2-S0> George Francis McAneny (December 24, 1869 – July 29, 1953), a newspaperman and municipal reformer, was Manhattan Borough President from 1910 to 1913, President of the New York City Board of Aldermen from 1914 to 1916, and New York City Comptroller in 1933. <P2-S1>  He also served as executive secretary of the New York City Civil Service Commission, secretary of the New York Civil Service Reform League (1894-1902), and executive manager of "The New York Times" (1916-1921). <SEP> <P3-S0> The New York City Board of Transportation or the Board of Transportation of the City of New York (NYCBOT or BOT) was a city transit commission and operator in New York City, consisting of three members appointed by the mayor. <P3-S1>  It was created in 1924 to control city-owned and operated public transportation service within the New York City Transit System. <P3-S2>  The agency oversaw the construction and operation of the municipal Independent Subway System (IND), which was constructed shortly after the Board was chartered. <P3-S3>  The BOT later presided over the major transfers of public transit from private control to municipal control that took place in the 1940s, including the unification of the New York City Subway in 1940. <P3-S4>  In 1953, the Board was dissolved and replaced by the state-operated New York City Transit Authority, now part of the Metropolitan Transportation Authority (MTA).