New revisions to the National Hazardous Materials Route Registry (NHMRR) took effect June 3. The revisions were reported to the Federal Motor Carrier Safety Administration (FMCSA) from April 1, 2019 to March 31, 2020, and were supplied by state and tribal governments.
The listings include all designated and restricted roads and preferred highway routes for transportation of highway route-controlled quantities of Class 7 (radioactive materials) (HRCQ/RAM) and non-radioactive hazardous materials (NRHM).
The newly published revisions to the NHMRR listings were published in the Federal Register and supersede and replace corresponding NHMRR listings published in the April 29, 2015 notice and corresponding revisions to the NHMRR listings published in the August 8, 2016, August 9, 2018, and September 24, 2019 notices.
Users of the NHMRR should continue to refer to the April 29, 2015 notice for additional background on the NHMRR and the Aug 8, 2016 notice for the procedures for State and Tribal government routing agencies to update their Route Registry listings and contact information.
The full current NHMRR for each State is posted on FMCSA’s website at fmcsa.dot.gov/regulations/hazardous-materials/national-hazardous-materials-route-registry.