“The Amtrak disaster shows why we must install Positive Train Control technology as soon as possible,” said Sen. Barbara Boxer (D-Calif.), who sponsored the original legislation containing the 2015 mandate, along with Sen. Dianne Feinstein (D-Calif.). “We need to ensure that railroads are held accountable and are working quickly to adopt this life-saving technology,” she added. “That is why I oppose efforts to give railroads an unconditional five-year waiver from the PTC requirements in the 2008 Feinstein-Boxer law.”