Amtrak train and tractor-trailer collide in Maryland

A tractor-trailer and an Amtrak train en route to Washington, D.C. from Chicago collided in Gaithersburg, Maryland Monday evening, leading to a diesel fuel spill and rail traffic delays, reports the Washington Post. Authorities said there were no reported injuries.

The backdrop: While details about this collision are scant, there has been a troubling string of Amtrak crashes in recent years, some of which were deadly.