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

Context paragraphs:
Gateway to Higher Education (program): The "Gateway Institute for Pre-College Education", begun as the Gateway to Higher Education program was started in New York City in September 1986.  Its initial goal was to prepare high school students from demographics underrepresented in science, medicine, and technology, for higher education in those fields.  Gateway relies on its strong partnerships with the public school system, medical centers, cultural institutions, universities and research facilities.  Based at City University at The City College of New York, the Gateway to Higher Education Program and the New York City Board of Education became partners in 1986 to increase the numbers of students from the public school system entering and completing medical school.  The program began at five New York City high schools and has grown to nine programs within large high schools and three stand-alone schools.  In 2007, preparations were made to implement a similar program in Roxbury, Massachusetts, at the John D O'Bryant school,now completing its third year as a Gateway Program (June 2009).  IIt is onto its 5th year at John D. O'Bryant and has around 57 students enrolled in Fall of 2011.  The head of the program, Ms. Bettie Nolan is working on making it better and trying to make sure every student in the program is getting the attention they need.

New York City Board of Estimate: The New York City Board of Estimate was a governmental body in New York City, responsible for numerous areas of municipal policy and decisions, including the city budget, land-use, contracts, franchises, and water rates.  Under the charter of the newly amalgamated City of Greater New York (passed in 1897, effective January 1, 1898) the Board of Estimate and Apportionment was composed of eight "ex officio" members: the Mayor of New York City, the New York City Comptroller and the President of the New York City Council, each of whom was elected citywide and had two votes, and the five borough presidents, each having one vote.  The La Guardia Reform Charter of 1938 simplified its name and enhanced its powers.

Gibbs Hi-V (New York City Subway car): The Gibbs Hi-V, a New York City Subway car, was built between 1904 and 1905 by American Car and Foundry for the IRT and its successors, the New York City Board of Transportation and the New York City Transit Authority.  It was the first all steel subway car ordered for New York City.

List of bus routes in Brooklyn: The Metropolitan Transportation Authority (MTA) operates a number of bus routes in Brooklyn, New York, United States; one minor route is privately operated under a city franchise.  Many of them are the direct descendants of streetcar lines (see list of streetcar lines in Brooklyn); the ones that started out as bus routes were almost all operated by the Brooklyn Bus Corporation, a subsidiary of the Brooklyn–Manhattan Transit Corporation, until the New York City Board of Transportation took over on June 5, 1940.  Of the 55 local Brooklyn routes operated by the New York City Transit Authority, roughly 35 are the direct descendants of one or more streetcar lines, and most of the others were introduced in full or in part as new bus routes by the 1930s.  Only the eastern section of the B82 (then the B50), the B83, and the B84 were created by New York City Transit from scratch, in 1978, 1966, and 2013, respectively.

Transportation in New York City: The transportation system of New York City is a network of complex infrastructural systems.  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.  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.  New York City is also home to an extensive bus system in each of the five boroughs, and numerous taxis throughout the city.

George McAneny: 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.  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).

R9 (New York City Subway car): The R9 was a New York City Subway car which was built in 1940 for the IND and its successors, which included the New York City Board of Transportation and the New York City Transit Authority.  A total of 153 R9 (or "Arnine") cars were ordered from two different manufacturers.  Cars 1650-1701 were built by American Car and Foundry, while cars 1702-1802 were built by Pressed Steel.  150 of the new cars were ordered for service on the new IND Sixth Avenue Line, which opened on December 15, 1940.  The Sixth Avenue Line was the second IND Manhattan trunk line (joining the 1932 IND Eighth Avenue Line), and therefore the additional cars were needed for the new service.  The remaining 3 cars in the R9 contract were ordered as replacements for 3 older IND cars (cars #212, #378, and #472) that had been damaged beyond repair as a result of a February 17, 1936 collision at the Smith–Ninth Street station.

AB Standard (New York City Subway car): The AB Standard was a New York City Subway car class built between 1914 and 1924 by the American Car and Foundry Company and Pressed Steel Car Company.  It ran under the operation of the Brooklyn Rapid Transit Company (BRT) and its successors, which included the Brooklyn–Manhattan Transit Corporation (BMT), the New York City Board of Transportation, and the New York City Transit Authority (NYCTA).

New York City Board of Transportation: 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.  It was created in 1924 to control city-owned and operated public transportation service within the New York City Transit System.  The agency oversaw the construction and operation of the municipal Independent Subway System (IND), which was constructed shortly after the Board was chartered.  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.  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).

370 Jay Street: 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.  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.  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.  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.

Supporting paragraphs: New York City Board of Transportation Transportation in New York City
Answer: transportation system of New York City