NTSB officials say event recorder data showed the train was going 82 mph as it entered a 30-mph turn. While Metro-North has since installed so-called approach permanent speed restriction signs at the derailment location, the NTSB urges the railroad to survey its entire system and install such signs at other locations. The NTSB also recommends the use of inward- and outward-facing audio and image recorders to help with safety compliance and accident investigations.
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