A Division (New York City Subway)

The A Division, also known as the IRT Division,^[2] is a division of the New York City Subway, consisting of the lines operated with services designated by numbers (1, 2, 3, 4, 5, 6, 7) and the 42nd Street Shuttle.^[3] These lines and services were operated by the Interborough Rapid Transit Company before the 1940 city takeover. A Division cars are narrower, shorter, and lighter than those of the B Division, measuring 8.6 by 51 feet (2.62 by 15.54 m).^[4][5]

A Division
(42nd Street)
Technical
Track gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Minimum radius	147.25 ft (44.88 m)[1]

List of lines

Typical A Division train. Note the three sets of doors as opposed to four.

The following lines are part of the A Division (services shown in parentheses; lines with colors next to them are trunk lines):

Station service legend
	Stops 24 hours a day
	Stops every day during daytime hours only
	Stops every day during overnight hours only
	Stops during weekday daytime hours only
	Stops during weekday rush hours only
	Stops weekdays in the peak direction only
Time period details
	Station is compliant with the Americans with Disabilities Act
↑	Station is compliant with the Americans with Disabilities Act in the indicated direction only
↓
	Elevator access to mezzanine only

•   IRT 42nd Street Shuttle (S  train)
•   IRT Broadway–Seventh Avenue Line (1  ​2  ​3  trains)
• IRT Dyre Avenue Line (5  train)
• IRT Eastern Parkway Line (2  ​3  ​4  ​5  trains)
•   IRT Flushing Line (7  <7> ​ trains)
• IRT Jerome Avenue Line (4  ​5  trains)
• IRT Lenox Avenue Line (2  ​3  trains)
•   IRT Lexington Avenue Line (4  ​5  ​6  <6> trains)
• IRT New Lots Line (2  ​3  ​4  ​5  trains)
• IRT Nostrand Avenue Line (2  ​5  trains)
• IRT Pelham Line (6  <6> ​ trains)
• IRT White Plains Road Line (2  ​5  trains)

Service history

Numbers were assigned to subway services in 1948:^[6]

	Name	North end/type
1	Seventh Avenue Local (all times)	Broadway
2	Seventh Avenue Express (all times except late nights)	White Plains Road
3	Seventh Avenue Express (all times)	Lenox Avenue
4	Lexington Avenue Express (all times except late nights)	Jerome
5	Lexington Avenue Express (all times except late nights)	White Plains Road
6	Lexington Avenue Local (all times)	Pelham Bay Park
7	Flushing Express peak direction (rush hours)	Flushing
	Flushing Local (all times)	Flushing

The 42nd Street Shuttle and Bowling Green–South Ferry Shuttle also provided subway services, and elevated service remained on the Third Avenue Line and Polo Grounds Shuttle.

See also

• B Division (New York City Subway)
• Interborough Rapid Transit Company
• New York City Subway

References

1. "BMT and IRT Curve Radii". Archived from the original on March 18, 2012.
2. "New Technology Trains - A Division". nycsubway.org. Retrieved July 11, 2018.
3. Sims, Calvin (June 30, 1990). "Alphabet Soup: Telling an IRT From a BMT". The New York Times. Retrieved July 11, 2018.
4. "NYC Fun Facts: Not All NYC Subway Trains Are the Same Size". Untapped Cities. August 2, 2017. Retrieved July 11, 2018.
5. Second Avenue Subway Draft Environmental Impact Statement, "Glossary" (PDF). (45.6 KiB)
6. Merelli, Annalisa (December 4, 2015). "The history behind New York City's missing subway lines". Quartz. Retrieved July 11, 2018.