The M2, M4 and M6 were three similar series of electric multiple unit rail cars produced by the Budd Company, Tokyu Car Corporation, and Morrison-Knudsen for the Metropolitan Transportation Authority
An MTA-owned Budd M2 car at New Haven-Union Station in August 2006.
A reserve M2 in the New Haven Yard in April 2017.
M4s in the New Haven yard
A retired M6 car, now located at the New England Disaster Training Center in Windsor Locks.
The M7 is an electric multiple unit railroad car built by Bombardier for use on the MTA's Long Island Rail Road and Metro-North Railroad. With delivery beginning in 2002, the M7 replaced the M1 railca
LIRR M7 No. 7707 approaching Jamaica
Metro-North M7A stopped at Dobbs Ferry station
A Metro-North M7A entering Bronxville station
An LIRR M7 arriving at Flushing–Main Street