Just four months after a green line train derailed on its way into Somerville, two green line trains collided at the East ...

Federal investigators are probing a crash on the Green Line last weekend in Somerville that sent four train operators and one ...

A federal investigation is now being launched into the crash on the Green Line that left someone hurt and snarled travel for thousands in Boston on Monday.

The technology allows a bus approaching a green light to ping the traffic signal to hold the light just a bit longer — akin to calling ahead for someone to keep an elevator door open.