CNN is leading with a breaking story. It appears to be a head-on, which raises issues of which we are all well aware.
The crash occurred just before 5 p.m. on an above-ground track on the Red Line near Takoma Park, Maryland, according to the Washington Metropolitan Area Transit Authority.
Watch “live” coverage here.
UPDATE: death toll at six.
These are Metro trains running on Metro tracks.
SECOND UPDATE: Washington Post reports possible signal failure operator error.
THIRD UPDATE: L. A. Times: 9 dead, emergency brake was applied