Federal Railroad Administration December 29, 2010 – Federal Register Recent Federal Regulation Documents

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 fourth update to the NSRT, which has fallen from 18,775 to 14,007.