Transportation

Credit: Amtrak is making infrastructure improvements, to handle its next generation of high speed trains. (Courtesy Amtrak)

Amtrak upgrading low-speed track between DC and Baltimore

Critics of Beltway, I-270 expansion plan call for a slowdown

What you need to know: Rush hour bus lanes now in effect on busy DC corridors

Westbound lanes on Bay Bridge to close for Special Olympics torch run

Bigger buses with more amenities rolling at BWI

Metro riders react to Huntington-Pentagon express shuttle changes as Alexandria shutdown continues