"The chairman of the Senate committee that oversees transportation issues said Monday that oil companies are dragging their feet on providing data to regulators about the safety of freight trains that are used to carry crude oil."

The shipment of oil by freight trains have faced scrutiny from lawmakers since a series of high-profile derailments like a crash that spilled 400,000 gallons of oil in Cassellton, N.D. last year.

Sen. Jay Rockefeller (D-W. Va.), who is chairman of the Senate Commerce, Science and Transportation Committee, said the oil industry was not keeping its promise to federal regulators to voluntary report additional information about safety testing of oil trains."

Keith Laing reports for The Hill April 7, 2014. [2]