Metro noted that extremely cold temperatures cause rails to contract, increasing stress in the steel. This makes the rails more susceptible to cracks and fractures.

METRO ALERT: Morning commuters can expect delays along the Red Line after a cracked rail was discovered at the Dupont Circle station.

Emergency crews are on the scene of a crash that ended with a car bursting into flames on the Metro tracks in Fairfax County on Wednesday.

HAGERSTOWN, Md. — Robotic dogs and workers wearing exoskeletons are building the D.C. Metro trains of tomorrow at a 307,000-square-foot factory in Maryland. Hitachi Rail’s sleek $100 million plant ...