Happy Pi Day. Yes, it's March 14th. If you write that date like an American, it looks like this: 3/14, and that looks like 3.14. It's not the best representation of pi, but it will do. As is my ...

The next time a subway car or commuter train rolls into the station, try to sneak a quick peek at its large metal wheels. You’ll notice that instead of being perfect cylinders, they’re actually angled ...

OAKLAND (BCN) — Newly designed BART train wheels, which will be installed on both new and existing trains, are expected to cut the noise heard by riders by as much as 50 percent, BART officials said ...

LEXINGTON, N.C. — Correction: An earlier version of this story said the train had derailed. Norfolk Southern confirmed that two front wheels of the train car came off the track, but the train car ...

BART officials announced Wednesday that a new train wheel design they hope will cut noise by half has passed a battery of performance tests at its Hayward test track and will be introduced into ...

CHICAGO (CBS)-- An Amtrak train on its way to Detroit from Chicago was delayed for more than six hours because of a flat wheel Sunday night. Wolverine Line train no. 354, carrying 254 passengers, was ...