Many metros operate more or less static routes, so a railway line is almost always synonymous with railway route. In New York, routes change frequently due to new connections or changes in the service pattern. The line describes the physical railway line or series of lines that a train route uses on its way from one terminal to another. Routes (also called services) are distinguished by a letter or a number. The lines have names.

For example, the D train, D route or D service, although colloquially called the D line, runs on the following lines on its route:

There are 27 train services in the metro system, including three shuttles. Each route has a color, representing the part of the line that runs through Manhattan of the route in question; A different color is assigned to the Brooklyn-Queens Crosstown route, as it does not operate in Manhattan and the ferries are all dark gray. Each service is also named by its Manhattan branch (or “crosstown”) and is marked as local or express.

Trains are marked by service labels in white or black (for proper contrast) in a field in the color of their main line. The field is enclosed in a circle for most services or a diamond for special services, such as express trains that run only at peak times on a route that normally operates as a local. Panels also typically include the name of the service and endpoints.

Division A (IRT) consists of 1 Broadway and Seventh Avenue Local, 2 Seventh Avenue Express, 3 Seventh Avenue Express, 4 Lexington Avenue Express, 5 Lexington Avenue Express, 6 Lexington Avenue Local, 7 Flushing Local and S 42nd Street Ferry.

Division B (BMT/IND) consists of the A Eighth Avenue Express, B, Sixth Avenue Express, C Eighth Avenue Local, D Sixth Avenue Express, E Eighth Avenue Local, F Sixth Avenue Local, G Brooklyn-Queens Crosstown Local, J Nassau Street Express, L 14th Street Local and Canarsie, M Nassau Street Local, N Broadway Express, Q Broadway Express, R Broadway Local, S Franklin Avenue Shuttle, S Rockaway Park Shuttle, W Broadway Local, and Z Nassau Street Express.

Division C consists of operations not associated with passenger transportation, including road maintenance and depot operations.

Projected projection of division B services:.

Division C consists of non-service areas, including track maintenance and yard operations areas.

The New York subway has the largest fleet of cars in the world. Approximately 6,300 cars in 2009 are on the New York City Transit list. The cars acquired by the New York City Council since the creation of the IND and for the rest of the divisions since 1948 are identified by the letter “R” followed by a number (e.g. R32). This is the contract number under which the cars were purchased. Cars with close numbers (e.g. R1 to R9) are often virtually identical, having simply been acquired through different contracts. The cars were known as “Type-R” to distinguish them from models built for private operators.

The system maintains two separate fleets of cars, one for the IRT lines and another for the BMT and IND lines. All IRT equipment is approximately 8 feet 9 inches (approximately 2.67 meters) wide and 51' (approximately 15.5 meters) long, while all BMT and IND equipment is approximately 10' (approximately 3 meters) wide and either 60' (approximately 18.3 meters) or 75' (approximately 22.86 meters) long.

Although the two fleets' equipment can operate on the same tracks, the key factor preventing interoperability is the fact that the two original contracts built for the IRT were made for a smaller profile. This is because IRT chose to use equipment of the same size as that which was in use on all existing elevated railways in the city. This profile was in line with older lines in service in Philadelphia, Boston and Chicago.

When the Brooklyn Rapid Transit Company began talks to operate the new subway lines, they made the decision to design a new type of car, 10 feet wide and 67 feet long, the subject of numerous patents, whose longer profile was more similar to steam railroad cars, allowing for greater passenger capacity, more comfortable seats, and other advantages. The BRT unveiled its design to the public in 1913, receiving such acceptance that all future lines were built for the BRT, the IRT or, eventually, the IND, would be built to accommodate the wider cars.

As a result, most IRT lines could accommodate larger BMT and IND equipment, with modifications to station platforms and trackside equipment. This didn't seem feasible, anyway, because the original, narrower subway included portions of Manhattan's two primary lines, as well as critical parts of the Brooklyn lines. This could be solved, but at great cost. On the other hand, it would be relatively easy to convert most of the Bronx lines for BMT and IND operations; Some of the plans for the Second Avenue line have included a conversion of the IRT's Pelham line.

The most important expansion is the construction of the Second Avenue line, called line and whose Phase I (from 96th to 63rd streets, where it will connect with the Broadway and Queens Boulevard lines), with work beginning on April 12, 2007. The opening of this line as a branch of the current line is expected in 2014.[11]​.

This line has been planned since the beginning of the subway, but the crisis of the 1920s and 1930s (Black Thursday of the New York Stock Exchange, in 1929, produced the most important recession of the American economy in the century) prevented it and, successively, the Second World War and the boom in highway construction throughout the United States in the 1950s and 1960s, did not contribute to the start of this project. The first phase of this line (with three stations at 72nd, 86th, and 96th streets) was inaugurated on January 1, 2017.

Finally, its construction began in the 1970s, although it was later paralyzed due to budgetary problems (the New York City fiscal crisis in the 1970s) and it still does not have sections that can be used.

This will be the most important expansion in the New York Subway, which has remained virtually unchanged since 1940, when the three operators were merged into a single corporation (only the Chrystie Street connection) in lower Manhattan, the Subway extensions to Rockaway (acquired from the Long Island Rail Road and Archer/Parsons (in 1988), the 63rd Street Tunnel"), under the East River "East River (New York)") (in 1989) and the 63rd Street connection (between the 63rd Street tunnel and the Queens Boulevard line, in 2001), have been the most significant works since then).

Other significant projects are:.

The extension of the number 7 train from its terminal in Times Square, to Eleventh Avenue and 34th Street (next to the Jacob K. Javits Convention Center, on the banks of the Hudson River). Work began on December 3, 2007 and the opening is scheduled for 2013.[12]​.

The reconstruction of the South Ferry station, terminal of Line 1, so that it can accommodate full trains (it is currently a circular station, dating from the early days of the Metro and can only accommodate five trailers, which causes enormous delays in trains that circulate on Seventh Avenue) is underway, which causes cuts in service on weekends. This new station will allow a direct transfer between the South Ferry and Whitehall stations (R and W, Broadway line) without having to go above ground. The opening was planned for 2008.

The construction of an interchange, called Fulton Street Transit Center (Fulton Street Transit Center) on Broadway, Lower Manhattan, where nine Subway lines converge, will consist of a new building that facilitates connections between the Seventh Avenue (2 and 3), Lexington (4 and 5), Eighth Avenue (A and C) and Nassau Street (J, M and Z) lines. It is also planned to connect this interchange with the future World Trade Center station, which will be built by the Spanish architect Santiago Calatrava and which, in addition to housing the PATH Metro, there are plans to build a direct train to John F. Kennedy International Airport. This project is scheduled to be completed in June 2009, is underway, and also causes service outages on weekends on the affected lines.

Finally, the construction of the Dey Street connector, which will allow the direct connection between the Fulton Street transit interchange and the new World Trade Center terminal, is underway, which has led to the closure of the Cortlandt Street station, on the Broadway line (R and W routes). The station is scheduled to reopen in mid-2007, with the walkway almost completed, although the work will not be completed until the new World Trade Center terminal is built.

The metro is often seen as an integral part of the city. Many people who lived in the area throughout the 1980s remember it for its crime and graffiti, but this has decreased since then.

The New York subway has featured in many films. Probably the most notable of his appearances is in the 1971 film The French Connection. The chase of the subway trailer by the protagonist's car under the BMT West End elevated line is often considered the best chase sequence in film history ([3], in English).

Later, the 1974 film *Pelham, One, Two, Three "The Taking of Pelham 123" (The Taking of Pelham One Two Three) focuses on the hijacking of a number 6 train in Manhattan.

The cult film The Warriors) bases its plot on a street gang taking the subway from the northern Bronx to Coney Island in southern Brooklyn. The trailers completely painted with graffiti contrast greatly with today's relatively clean subway system.

In the video games Grand Theft Auto III, Grand Theft Auto IV, it appears in the form of a parody.

In 2004, Spider-Man 2 had a sequence of a fight and crash of an out-of-control elevated train in Manhattan, although the tracks that appear do not exist; was filmed on the Chicago elevated subway.

In music, the Duke Ellington Band played the song Take the A Train inspired by this line that goes to Harlem.

In the Telemundo soap opera Una maid en Manhattan, you can see in the entrances of the soap opera and some scenes of the story, the subway that travels to Manhattan.

In the Netflix series Get Down you can see the culture of graffiti among young lovers of this street art. Rumi and Thor, characters in this series, are the ones who are most influenced by painting the subway cars with messages of struggle and protest towards the New York population.

Many metros operate more or less static routes, so a railway line is almost always synonymous with railway route. In New York, routes change frequently due to new connections or changes in the service pattern. The line describes the physical railway line or series of lines that a train route uses on its way from one terminal to another. Routes (also called services) are distinguished by a letter or a number. The lines have names.

For example, the D train, D route or D service, although colloquially called the D line, runs on the following lines on its route:

There are 27 train services in the metro system, including three shuttles. Each route has a color, representing the part of the line that runs through Manhattan of the route in question; A different color is assigned to the Brooklyn-Queens Crosstown route, as it does not operate in Manhattan and the ferries are all dark gray. Each service is also named by its Manhattan branch (or “crosstown”) and is marked as local or express.

Trains are marked by service labels in white or black (for proper contrast) in a field in the color of their main line. The field is enclosed in a circle for most services or a diamond for special services, such as express trains that run only at peak times on a route that normally operates as a local. Panels also typically include the name of the service and endpoints.

Division A (IRT) consists of 1 Broadway and Seventh Avenue Local, 2 Seventh Avenue Express, 3 Seventh Avenue Express, 4 Lexington Avenue Express, 5 Lexington Avenue Express, 6 Lexington Avenue Local, 7 Flushing Local and S 42nd Street Ferry.

Division B (BMT/IND) consists of the A Eighth Avenue Express, B, Sixth Avenue Express, C Eighth Avenue Local, D Sixth Avenue Express, E Eighth Avenue Local, F Sixth Avenue Local, G Brooklyn-Queens Crosstown Local, J Nassau Street Express, L 14th Street Local and Canarsie, M Nassau Street Local, N Broadway Express, Q Broadway Express, R Broadway Local, S Franklin Avenue Shuttle, S Rockaway Park Shuttle, W Broadway Local, and Z Nassau Street Express.

Division C consists of operations not associated with passenger transportation, including road maintenance and depot operations.

Projected projection of division B services:.

Division C consists of non-service areas, including track maintenance and yard operations areas.

The New York subway has the largest fleet of cars in the world. Approximately 6,300 cars in 2009 are on the New York City Transit list. The cars acquired by the New York City Council since the creation of the IND and for the rest of the divisions since 1948 are identified by the letter “R” followed by a number (e.g. R32). This is the contract number under which the cars were purchased. Cars with close numbers (e.g. R1 to R9) are often virtually identical, having simply been acquired through different contracts. The cars were known as “Type-R” to distinguish them from models built for private operators.

The system maintains two separate fleets of cars, one for the IRT lines and another for the BMT and IND lines. All IRT equipment is approximately 8 feet 9 inches (approximately 2.67 meters) wide and 51' (approximately 15.5 meters) long, while all BMT and IND equipment is approximately 10' (approximately 3 meters) wide and either 60' (approximately 18.3 meters) or 75' (approximately 22.86 meters) long.

Although the two fleets' equipment can operate on the same tracks, the key factor preventing interoperability is the fact that the two original contracts built for the IRT were made for a smaller profile. This is because IRT chose to use equipment of the same size as that which was in use on all existing elevated railways in the city. This profile was in line with older lines in service in Philadelphia, Boston and Chicago.

When the Brooklyn Rapid Transit Company began talks to operate the new subway lines, they made the decision to design a new type of car, 10 feet wide and 67 feet long, the subject of numerous patents, whose longer profile was more similar to steam railroad cars, allowing for greater passenger capacity, more comfortable seats, and other advantages. The BRT unveiled its design to the public in 1913, receiving such acceptance that all future lines were built for the BRT, the IRT or, eventually, the IND, would be built to accommodate the wider cars.

As a result, most IRT lines could accommodate larger BMT and IND equipment, with modifications to station platforms and trackside equipment. This didn't seem feasible, anyway, because the original, narrower subway included portions of Manhattan's two primary lines, as well as critical parts of the Brooklyn lines. This could be solved, but at great cost. On the other hand, it would be relatively easy to convert most of the Bronx lines for BMT and IND operations; Some of the plans for the Second Avenue line have included a conversion of the IRT's Pelham line.

The most important expansion is the construction of the Second Avenue line, called line and whose Phase I (from 96th to 63rd streets, where it will connect with the Broadway and Queens Boulevard lines), with work beginning on April 12, 2007. The opening of this line as a branch of the current line is expected in 2014.[11]​.

This line has been planned since the beginning of the subway, but the crisis of the 1920s and 1930s (Black Thursday of the New York Stock Exchange, in 1929, produced the most important recession of the American economy in the century) prevented it and, successively, the Second World War and the boom in highway construction throughout the United States in the 1950s and 1960s, did not contribute to the start of this project. The first phase of this line (with three stations at 72nd, 86th, and 96th streets) was inaugurated on January 1, 2017.

Finally, its construction began in the 1970s, although it was later paralyzed due to budgetary problems (the New York City fiscal crisis in the 1970s) and it still does not have sections that can be used.

This will be the most important expansion in the New York Subway, which has remained virtually unchanged since 1940, when the three operators were merged into a single corporation (only the Chrystie Street connection) in lower Manhattan, the Subway extensions to Rockaway (acquired from the Long Island Rail Road and Archer/Parsons (in 1988), the 63rd Street Tunnel"), under the East River "East River (New York)") (in 1989) and the 63rd Street connection (between the 63rd Street tunnel and the Queens Boulevard line, in 2001), have been the most significant works since then).

Other significant projects are:.

The extension of the number 7 train from its terminal in Times Square, to Eleventh Avenue and 34th Street (next to the Jacob K. Javits Convention Center, on the banks of the Hudson River). Work began on December 3, 2007 and the opening is scheduled for 2013.[12]​.

The reconstruction of the South Ferry station, terminal of Line 1, so that it can accommodate full trains (it is currently a circular station, dating from the early days of the Metro and can only accommodate five trailers, which causes enormous delays in trains that circulate on Seventh Avenue) is underway, which causes cuts in service on weekends. This new station will allow a direct transfer between the South Ferry and Whitehall stations (R and W, Broadway line) without having to go above ground. The opening was planned for 2008.

The construction of an interchange, called Fulton Street Transit Center (Fulton Street Transit Center) on Broadway, Lower Manhattan, where nine Subway lines converge, will consist of a new building that facilitates connections between the Seventh Avenue (2 and 3), Lexington (4 and 5), Eighth Avenue (A and C) and Nassau Street (J, M and Z) lines. It is also planned to connect this interchange with the future World Trade Center station, which will be built by the Spanish architect Santiago Calatrava and which, in addition to housing the PATH Metro, there are plans to build a direct train to John F. Kennedy International Airport. This project is scheduled to be completed in June 2009, is underway, and also causes service outages on weekends on the affected lines.

Finally, the construction of the Dey Street connector, which will allow the direct connection between the Fulton Street transit interchange and the new World Trade Center terminal, is underway, which has led to the closure of the Cortlandt Street station, on the Broadway line (R and W routes). The station is scheduled to reopen in mid-2007, with the walkway almost completed, although the work will not be completed until the new World Trade Center terminal is built.

The metro is often seen as an integral part of the city. Many people who lived in the area throughout the 1980s remember it for its crime and graffiti, but this has decreased since then.

The New York subway has featured in many films. Probably the most notable of his appearances is in the 1971 film The French Connection. The chase of the subway trailer by the protagonist's car under the BMT West End elevated line is often considered the best chase sequence in film history ([3], in English).

Later, the 1974 film *Pelham, One, Two, Three "The Taking of Pelham 123" (The Taking of Pelham One Two Three) focuses on the hijacking of a number 6 train in Manhattan.

The cult film The Warriors) bases its plot on a street gang taking the subway from the northern Bronx to Coney Island in southern Brooklyn. The trailers completely painted with graffiti contrast greatly with today's relatively clean subway system.

In the video games Grand Theft Auto III, Grand Theft Auto IV, it appears in the form of a parody.

In 2004, Spider-Man 2 had a sequence of a fight and crash of an out-of-control elevated train in Manhattan, although the tracks that appear do not exist; was filmed on the Chicago elevated subway.

In music, the Duke Ellington Band played the song Take the A Train inspired by this line that goes to Harlem.

In the Telemundo soap opera Una maid en Manhattan, you can see in the entrances of the soap opera and some scenes of the story, the subway that travels to Manhattan.

In the Netflix series Get Down you can see the culture of graffiti among young lovers of this street art. Rumi and Thor, characters in this series, are the ones who are most influenced by painting the subway cars with messages of struggle and protest towards the New York population.