R143 (New York City Subway car)

R143
An R143 train on the L route at New Lots Avenue
Interior of an R143 car
In service	2001–present
Manufacturer	Kawasaki Rail Car Company
Built at	Yonkers, New York, US Lincoln, Nebraska, US Kobe, Hyōgo, Japan
Family name	New Technology Train
Constructed	2001–2003
Entered service	December 4, 2001 (acceptance testing) February 12, 2002 (official service)
Number built	212
Number in service	212 (176 in revenue service during rush hours)
Formation	53 4-car sets (2 A cars and 2 B cars)
Fleet numbers	8101–8312
Capacity	240 (A car) 246 (B car)
Operators	New York City Subway
Depots	East New York Yard[1][2]
Service(s) assigned	[3][4] As of June 30, 2024
Specifications
Car body construction	Stainless steel with fiberglass rear bonnets
Train length	4 car train: 240 ft 10.08 in (73.4080 m) 8 car train: 481 ft 8.16 in (146.8161 m)
Car length	60 ft 2.52 in (18,352.0 mm)[5]
Width	9 ft 9.28 in (2,979 mm)
Height	12 ft 0.29 in (3,665 mm)
Floor height	3 ft 9.12 in (1,146.0 mm)
Platform height	3 ft 9.12 in (1,146.0 mm)
Entry	Level
Doors	8 sets of 50 inch wide side doors per car
Maximum speed	55 mph (89 km/h)
Weight	A car: 83,700 lb (38,000 kg) B car: 81,900 lb (37,100 kg)
Traction system	PWM 2-level IGBT–VVVF (Bombardier MITRAC)
Traction motors	4 × Bombardier 1508C 150 hp (111.9 kW) 3-phase AC induction motor
Power output	2,400 hp (1,789.680 kW) (4-car set)
Acceleration	2.5 mph/s (4.0 km/(h⋅s))
Deceleration	3.0 mph/s (4.8 km/(h⋅s)) (full service) 3.2 mph/s (5.1 km/(h⋅s)) (emergency)
Auxiliaries	SAFT 250AH battery (B car)
Electric system(s)	Third rail, 600 V DC
Current collector(s)	Contact shoe
UIC classification	Bo’Bo’+Bo’Bo’+Bo’Bo’+Bo’Bo’
AAR wheel arrangement	B-B+B-B+B-B+B-B
Braking system(s)	Dynamic braking propulsion system; WABCO RT96 tread brake system; safety brakes
Safety system(s)	CBTC, dead man's switch, tripcock
Headlight type	Incandescent light bulb
Track gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge

The R143 is a class of New Technology Train subway cars built by Kawasaki Rail Car Company for the New York City Subway's B Division. Delivered between 2001 and 2003, the cars displaced R40s and R42s that operated on the L service in conjunction with the BMT Canarsie Line's signal system being automated.

The R143 was the first "B" Division order of the NTT series, and the first 60-foot (18.29 m) B Division car built for the New York City Subway system since the R42s delivered in 1969. A total of 212 cars were built, all arranged as four-car sets. The first cars (8101–8104) were delivered to the 207th Street Yard on April 30, 2001. 8105–8108 were delivered sometime later in the summer of 2001. The first R143s entered a 30-day period of revenue service testing on December 4, 2001, and officially entered service on the Canarsie Line on February 12, 2002. All cars were delivered by March 2003 with all cars being in service by April 2003.