The most common are the EMD SD40-2 and SD70, and the GE C36-7 ... switcher locomotives are in operation on Class I’s, and only one HFC (hydrogen fuel cell) switcher prototype is being tested on U.S.

Chicago’s Metra has taken delivery of all 15 SD70-MACH locomotives that it ordered from Progress Rail in 2019. The commuter railroad made the announcement in the fourth-quarter 2024 edition of its ...