A tanker crashed and exploded in Maryland on Saturday.
Icy conditions are being blamed for the deadly crash.
Two people were killed and more than a dozen others were hurt in a 55-car pileup along a Baltimore highway.
Officers say icy patches on the roads early Saturday morning caused more than 200 crashes in the city alone.
Another crash on the same road killed a third person, and created a 15-car pileup on the Baltimore beltway.
The highway had to be shut down for hours, and the state extended its travel advisory.
(Copyright (c) 2018 CNN. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.)