R110A (New York City Subway car)

R110A
R110A at the 239th Street Yard in the Bronx
The Interior of an R110A
In service	1993–1998
Manufacturer	Kawasaki Rail Car Company
Built at	Kobe, Japan
Family name	NTTT (New Technology Test Train)
Constructed	1992
Entered service	June 15, 1993
Refurbished	Work service: 2013–2014 (B-cars) 2021–2022 (A-cars, pending)
Number built	10
Number in service	(6 in work service)
Formation	Five-car sets or ABBBA
Fleet numbers	8001–8010
Capacity	24 (A car), 28 (B car)
Operators	New York City Subway
Specifications
Car body construction	Stainless steel
Car length	51 ft 4 in (15.65 m)
Width	8 ft 9 in (2.67 m)
Height	11 ft 10.5 in (3.620 m)
Floor height	3 ft 8.5 in (1.130 m)
Doors	6 sets of 63 inch wide side doors per car
Maximum speed	55 mph (89 km/h)
Weight	72,000 lb (33,000 kg) (motor car) 67,400 lb (30,600 kg) (trailer car)
Traction system	GTO–VVVF (AEG/Adtranz)
Traction motors	Adtranz 1501A 150 hp (110 kW) 3-phase AC 4-pole synchronous motors
Electric system(s)	Third rail, 625 V DC
Current collector(s)	Contact shoe
UIC classification	Bo’Bo’+Bo’Bo’+Bo’Bo’+Bo’Bo’+Bo’Bo’
AAR wheel arrangement	B-B+B-B+B-B+B-B+B-B
Braking system(s)	WABCO RT7
Safety system(s)	dead man's switch, tripcock
Track gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge

The R110A (contract order R130) was a New York City Subway car model built by Kawasaki Heavy Industries in 1992 as a prototype New Technology Train to test various technologies. There were ten cars arranged as five-car sets. They were designed to test features that would be implemented on future mass-production New Tech Train orders.

First announced in 1989, the R110As entered service on June 15, 1993, on the 2. They continued to run until the spring of 1998, when they were pulled out of service due to brake problems and fire damage.^[1] Between 2013 and 2014, all the B-cars (8002–8004 and 8007–8009) were converted into flood pump cars. The A–cars (8001, 8005–8006, and 8010) are currently^[when?] being similarly converted.