LINCOLN, Neb. (AP) — The number of trains carrying at least 1 million gallons of crude oil across eastern Nebraska each week has more than tripled.

BNSF railroad recently provided updated figures to the Nebraska Emergency Management Agency.

BNSF says it is moving about a dozen oil trains through eastern Nebraska each week. That’s up from three trains a week last summer.

Federal transportation officials ordered the railroads last spring to notify states about trains carrying at least 1 million gallons of crude oil after a string of fiery derailments.

BNSF also modified its route in Nebraska to reduce the number of oil trains that pass through Lincoln.