M8 (railcar)

M8
M8
	M8 EMUs on a Metro-North train arriving at Stamford on the New Haven Line.
	Inside an M8 EMU
In service	2011–present
Manufacturer	Kawasaki
Built at	Yonkers, New York, U.S.; Lincoln, Nebraska, U.S.; Kobe, Hyōgo, Japan;
Family name	M-Series
Replaced	M2/M4/M6
Entered service	March 1, 2011
Number built	465 (in use)
Formation	220 married pairs, 25 single cars
Capacity	111 seated (A car); 101 seated (B car); 114 seated (single car);
Owners	Metropolitan Transportation Authority; Connecticut Department of Transportation;
Operators	Metro-North Railroad; Amtrak (under contract from CT Rail);
Specifications
Car length	85 ft (25,908 mm)
Width	10 ft 5 in (3,175 mm)
Height	14 ft 7.5 in (4,458 mm) (top of pantograph)
Maximum speed	100 mph (161 km/h) (design); 90 mph (145 km/h) (Shore Line East service); 80 mph (129 km/h) (Metro North service);
Weight	143,000 pounds (65,000 kg) (A car); 141,600 pounds (64,200 kg) (B car); 126,500 pounds (57,400 kg) (single car);
Traction system	Mitsubishi Electric MAP-204-A25VD191 IGBT–C/I
Traction motors	8 × Mitsubishi MB-5129-A 270 hp (200 kW) asynchronous 3-phase AC
Electric systems	Third rail, 750 V DC; Overhead line, 12.5 kV–25 kV 60 Hz AC;
Current collection	Third rail: Contact shoe; Overhead line: Pantograph;
UIC classification	Bo′Bo′+Bo′Bo′
AAR wheel arrangement	B-B+B-B
Braking system	Regenerative / pneumatic
Safety systems	ATC and Pulse code cab signaling
Coupling system	Budd pin and cup coupler
Track gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge

The M8 is an electric multiple unit railroad car built by Kawasaki for use on the Metro-North Railroad New Haven Line and the CT Rail Shore Line East. The fleet of 471 cars first entered service in 2011, replacing the M2, M4 and M6 cars, which entered service in 1973, 1987 and 1994, respectively. An additional 60-car order is currently finishing delivery in response to increased ridership and usage on Shore Line East.