Federal Railroad Administration January 5, 2012 – Federal Register Recent Federal Regulation Documents
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Adjustment of Nationwide Significant Risk Threshold
In accordance with Appendix D to Title 49 Code of Federal Regulations (CFR) Part 222, Use of Locomotive Horns at Highway-Rail Grade Crossings, FRA is updating the Nationwide Significant Risk Threshold (NSRT). This action is needed to ensure that the public has the proper threshold of permissible risk for calculating quiet zones established in relationship to the NSRT. This is the fifth update to the NSRT, which has fallen from 14,007 to 13,722.