RICHMOND, Va. (AP) — U.S. Sen Mark Warner said Monday that oil producers and rail companies need to step up their safety efforts in the wake of crude oil car that caught fire during the April 30 train derailment in downtown Lynchburg.

Warner said another derailment could make local officials wary of allowing large train shipments of crude oil to travel through their communities and lead to increased regulations, hurting the bottom lines of oil producers and rail companies.