Metro-North M8 train at Port Chester, NY along the New Haven Line
New M8 cars are on display at Grand Central during the Parade of Trains in honor of Grand Central's 100th birthday
|In service||March 2011-present|
|Manufacturer||Kawasaki Heavy Industries|
|Number built||230 out of 405 car order, not including a 25 car option|
|Formation||190 Married pairs, 25 Singles|
110 (A car); 101 (B car)
Connecticut Department of Transportation
|Car length||85 ft 0 in (25,908 mm)|
|Width||10 ft 6 in (3,200 mm)|
|Maximum speed||100 mph (161 km/h)|
|Weight||144,850 pounds (65,700 kg)
143,780 pounds (65,220 kg)
|Electric system(s)||750 V DC Third rail
12.5 kV AC
25 kV AC Catenary
|Current collection method||Contact shoe
|Braking system(s)||Regenerative / Pneumatic|
|Coupling system||Budd Pin and Cup coupler|
|Track gauge||4 ft 8 1⁄2 in (1,435 mm)|
The M8 is an electric multiple unit railroad car built by Kawasaki for use on the New Haven Line of the Metro-North Railroad. It will replace the current fleet of 240 M2's which are nearing 40 years old, 54 M4's which entered service in 1987, and 48 M6's which entered service in 1993. On May 17, 2013, several cars were damaged in a train accident in Fairfield, Connecticut. 
The M8 is similar in design to the M7 car used on the Harlem Line and the Hudson Line. Like the M7, the M8 is able to pick up 750 Volt DC direct current power from underruning third rail for operation along the New Haven Line from Grand Central Terminal to Pelham, where the traction power source is transferred to the overhead catenary wire, the overhead wire is at a nomimal 12.5 kV AC power from overhead lines via Pantographs for operation from Pelham, New York to New Haven, Connecticut (as well as along the New Canaan Branch), and 25 kV AC power from catenary for operation along the Shore Line East route east of New Haven to New London, Conn. Unlike in earlier classes, changeover between the two AC voltages can be made by the engineer while on the move.
In response to rising number of people seeking to use their bicycle to solve the "last mile" problem between Metro-North stations and destinations, ConnDOT has pledged to provide hooks for storage of two bicycles in the disabled riders area of each rail car. In the event that a disabled rider boards a car, all cyclists must move their bicycles to the entry vestibule. In spite of the hook installation, during peak travel periods only folding bicycles are permitted aboard most Metro North trains.
Exterior design 
The exterior design of the new M8 rail car is red, in keeping with the traditional exterior color of the New Haven Line rail cars. The body shape is similar to the M7 rail cars that are in operation on the Hudson and Harlem lines.
Delivery schedule 
The Connecticut Department of Transportation order consists of 300 cars, with an 80 car option order. This option was approved on August 11, 2010. Full production of the M8's was scheduled to begin in early 2010 but has since been delayed. Kawasaki has cited problems with steel suppliers and sub-contractors (which is responsible for 60% of the cars). Once production is at full output the cars will be delivered at a rate of ten per month.
In December 2010 the first 24 cars were received and began to undergo testing.
The cars were originally supposed to go into revenue service in December 2010, however, because of technical problems, revenue service was deferred until March 1, 2011. The first run of the initial 8 car set (consisting of cars 9114, 9115, 9116, 9117, 9112, 9113, 9108, and 9109) originated in Stamford at 10:30am, arriving in Grand Central Terminal at 11:28am. A total of ten 8-car train sets were slated to enter service by the end of the year.
On May 7, 2011, Kawasaki announced that deliveries of 20 cars of the 80 scheduled to enter service by the end of the year would be delayed due to supply problems; Kawasaki said it would build the cars at a later date and absorb the costs incurred. At the time of the announcement, 16 cars had entered service, with an additional ten delivered but not yet in service.
Two months later, an investigative report by WABC-TV News examined correspondence between Kawasaki and Metro-North over the delays in introducing the cars. At the time it had been claimed the cars merely had software problems, but the documents reporters obtained under New York's Freedom of Information Law showed Kawasaki repeatedly asking for deadline extensions over issues such as bad weather and financial difficulties at the company that supplied the onboard toilets. Railroad officials complained in emails reviewed by the channel that some of the requests "defie[d] logic" and were a waste of time. Kawasaki said such multiple delays were "not unusual given the complexity of the cars and suppliers" and were often beyond their control.
On July 20, 2011, the Connecticut Department of Transportation announced the order of 25 unpowered M8 railcars, with options for up to 25 more, at a cost of US$93 million to replace the 48 car M6 fleet.
According to Metro-North, as of Tuesday, May 14th, 2013, 222 cars (9100-9321) have been delivered to state property; 216 cars have been accepted into regular revenue service rotations, comprising 808 weekly trains. 22 cars are currently being tested or inspected by Kawasaki. M8's now provide over half of service on weekdays, and up to four-fifths of all service on weekends.
On Tuesday, October 16, 2012, Metro-North announced that they would be installing 15 weekday and 30 weekend M8 trains to their schedule to accommodate increased ridership.
Technical data 
- Builder: Kawasaki Rail Car, Inc.
- Car Numbers:
9100/9101–9478/9479 plus 25 unpowered cab cars, numbers to be confirmed
*Starting Tractive Effort: 135 kN (30,000 lbf), Limited to 67 kN (15,000 lbf)
At approximately 6:10 PM on May 17, 2013, an M8 passenger train was heading east from New York City on Metro-North's New Haven line when it partially derailed, colliding with an oncoming train coming from the New Haven line's east end. The accident occurred between the Bridgeport and Fairfield Metro stations. The cause of the accident is suspected to be a fractured rail joint, though it is still unclear whether the fracture was the cause of the accident, or if the track was damaged as a result of it. 72 people were injured in the accident, 5 of those being serious injuries.
Though the event was disastrous, no lives were lost. Senator Richard Blumenthal of Connecticut credited (the M8 Railcars) installed in 2011, with potentially saving lives. 
Lead Car 9109 being tested in New Haven. This 8 car set was the first in service on the New Haven Line.
Test train in acceptance yard at New Haven, CT.
See also 
|Wikimedia Commons has media related to: M8 (railcar)|
- Stannard, Ed (March 1, 2011). "New Metro-North M8 rail cars take first run to New York". New Haven Register. Retrieved March 1, 2011.
- Martin, Cassidy (March 1, 2011). "Checking the Schedule". Greenwich Time. cover.
- Max speed for New Haven Line, equipment max speed could be higher.
- Cameron, Jim (September 26, 2007). "Desigining the new M8 rail cars". Retrieved March 4, 2011.
- "Metro North Crash: Injuries Reported After Commuter Trains Collide In Connecticut". Huffington Post. May 17, 2013. Retrieved 18 May 2013.
- "M-8 Rail Cars Project No. 300-0116". Connecticut Department of Transportation. March 4, 2009. Retrieved 2009-05-29.[dead link]
- "Connecticut to purchase 80 more cars for Metro-North line". Progressive Railroading. August 6, 2010. Retrieved March 4, 2011.
- Cassidy, Martin (October 21, 2009). "First of new M8 railcars leaving Japan in days, Metro-North chief says". The Stamford Advocate. Retrieved March 4, 2011.
- Cameron, Jim (October 31, 2009). "New M8 Rail Cars A Year Late In Delivery". Retrieved March 4, 2011.
- "Unveiling the new M8 cars". NBC Connecticut. November 15, 2010. Retrieved March 4, 2011.
- Haynes, Crystal (December 16, 2010). "Glitch keeps new M-8 rail cars out of service". WTNH. Retrieved March 4, 2011.
- "Connecticut DOT delays revenue service for M-8 cars to continue tests". Progressive Railroading. December 16, 2010. Retrieved March 4, 2011.
- Grynbaum, Michael B. (March 1, 2011). "On Metro-North’s New Haven Line, New Cars Arrive". The New York Times. Retrieved March 5, 2011.
- "Supply problems disrupt M-8 deliveries". Trains Magazine. May 6, 2011. Retrieved May 7, 2011.
- Hoffer, Jim (June 29, 2011). "Investigation into delayed new Metro North train cars". WABC-TV. Retrieved June 30, 2011.
- "Connecticut places order for un-powered M-8 railcars". Trains Magazine. July 20, 2011. Retrieved July 24, 2011.
- "Update: New Haven Line Rail Cars". May 4, 2011. Retrieved May 9, 2011.
- "Metro-North Adds More Trains to New Haven Line". October 16, 2012. Retrieved October 16, 2012.
- "Trains May Not Run for Days in Crash Area". New York Times. May 17, 2013. Retrieved 2013-05-20.
|Passenger rail cars of the LIRR and Metro-North|
|4400 Series (MNCR)|
|Shoreliner I (MNCR)|
|Shoreliner II (MNCR)|
|Shoreliner III (MNCR)|
|Shoreliner IV (MNCR)|
|Comet V (MNCR)|