William Wolfgang, the T's director of vehicle engineering, says that new battery-powered engine technology isn't sufficiently developed to be able to replace the T's aging fleet of diesel locomotives.

After Caltrain completed electrifying tracks between San Francisco and San Jose, the agency found itself stuck with now-obsolete rail cars and diesel engines. Working with the U.S. State Department, ...

Since Caltrain has switched to electric all-electric trains, their retired diesel fleet will be sent to Lima, Peru, to serve passenger rail service there, according to a Caltrain press release. After ...

The newest subway vehicle for MTA New York City Transit has an “R” designation, but it’s a stand-alone piece of rolling stock that doesn’t carry passengers. It’s the R255, a hybrid battery-diesel ...