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.

Here we round up the 10 fastest diesel locomotives ever.

Locomotives remain a fast and efficient way to move cargo overland. The low rolling resistance of steel-on-steel will always beat rubber on road, the ability to pull long chains of freight cars, ...

Metrolink unveiled its first-ever clean diesel locomotive on Thursday that officials said will emit far fewer smog-forming gases and is more powerful than its current trains. The new F125 locomotive, ...

[Stay on top of transportation news: Get TTNews in your inbox.] Scores of government officials, public agencies and business interests are warning the U.S. Environmental Protection Agency that ...