The proposed rule comes in the wake of this year’s toxic spill along the Pa./Ohio border.

Pennsylvania’s two United States senators, joined by a colleague from Ohio, have thrown their support behind a proposed federal rule aimed at providing more information to emergency service personnel who respond to the kind of toxic train spills that upended the lives of thousands of people on either side of the Pennsylvania/Ohio border earlier this year. U.S. Sen. Sherrod Brown, D-Ohio (Getty Images)…