NHDOT CNGMU I

The  is a series of CNG (compressed natural gas) multiple unit cars built in by  in 2009-2010 for use on the state commuter network in the U.S. state of, run by NHDOT Commuter Rail.

Orders and delivery
ordered 18 units in 2007. They were built by at  in,. The first two units were built as preseries units for testing - one was tested in at the  while another was sent to  for testing by NHDOT. All locomotives were transported to the and shipped via container ship to the Conley Terminal in,.

Incidents and accidents

 * On May 15, 2018, an out-of-service NHDOT CNGMU I exploded outside Manchester when it crashed into a clearance barrier and ruptured the roof-mounted CNG tanks. The driver survived with third degree burns and was airlifted to Massachusetts General Hospital's Sumner Redstone Burn Center in Boston, other crew members had jumped clear seconds prior to the explosion. The unit involved was written off and scrapped.