The M7A is a United States Train Sim World electric multiple unit that runs on the Metro-North Railroad. It is one of two similar models of electric multiple unit (EMU) railcars built by Bombardier for the Long Island Rail Road (LIRR) and Metro-North Railroad. The other model is the M7, which runs on the LIRR. 

Explanation

• The M7A is similar in design to the M7, but has some minor differences. 
• The M7A has a blue front exterior with white stripes, while the M7 has a black and yellow front exterior. 
• The M7A has a different styling at the end of the car than the M7. 
• The M7 has illuminated number boards, while the M7A does not. 
• The M7A was built for Metro-North, while the M7 was built for the LIRR. 
• The M7A and M7 were built to accommodate the different electrical and signaling systems of the LIRR and Metro-North. 
• The M7A and M7 were built in married pairs, with each car having a complete set of controls for the engineer, conductor, or brakeman.

Manufacturer of M7A

Bombardier Transportation