battery-electric multiple-unit

For LIRR, a Potential First: Battery/Third-Rail ‘BEMU’

If all goes as planned, in about one year, MTA Long Island Rail Road will be testing a prototype “BEMU” (battery-electric multiple unit) that operates on third-rail power or batteries on the 13-mile, non-electrified Oyster Bay Branch. The program, a venture with Alstom, will be North America’s first test-of-concept of this application on commuter railcars.