Service to two lines was temporarily suspended on Saturday so crews could work to restore power in the Transbay Tube.

A new map highlights what many people living in the D.C. region already experience: There’s more flash flooding in areas where it wasn’t common in the past.

Two NJ Transit commuter buses collided on a ramp to the busy Port Authority Bus Terminal in New York Thursday morning, injuring 20 people on board, agency officials said.

The development of the times has brought new challenges to urban rail transit, including higher speed, larger traffic volume, safer and more energy-saving operation. However, the current DC system and ...

Learning from two-level voltage-source converters, the existing impedance-based stability analyses of modular multilevel converters (MMCs) focus on system modes with finite closed-loop transfer ...