U.S. railroads have agreed to change some procedures as a result of the 2012 Paulsboro derailment that caused a vinyl chloride spill.

The railroads have agreed to rely solely on the federal Emergency Response Guidebook and to remove any other materials that offer different information. Such a provision was included in legislation introduced by U.S. Sen. Robert Menendez (D-N.J.) and Rep. Donald Norcross (D-1st Dist.) in response to the accident.

"When a train accident happens and every second counts, it makes no sense to have two sets of emergency response information on board--especially if that information is contradictory," Menendez said. "At best, it's confusing for first responders. At worst, less protective information could result in serious consequences for public health and human life."

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