You are using an unsupported browser. This web site is designed for the current versions of Microsoft Edge, Google Chrome, Mozilla Firefox, or Safari.
The Office of the Federal Register publishes documents on behalf of Federal agencies but does not have any authority over their programs. We recommend you directly contact the agency associated with the content in question.
If you have comments or suggestions on how to improve the www.ecfr.gov website or have questions about using www.ecfr.gov, please choose the 'Website Feedback' button below.
If you would like to comment on the current content, please use the 'Content Feedback' button below for instructions on contacting the issuing agency
Enhanced content is provided to the user to provide additional context.
This content is from the eCFR and is authoritative but unofficial.
Navigate by entering citations or phrases (eg: 1 CFR 1.1 49 CFR 172.101 Organization and Purpose 1/1.1 Regulation Y FAR).
Choosing an item from citations and headings will bring you directly to the content. Choosing an item from full text search results will bring you to those results. Pressing enter in the search box will also bring you to search results.
Background and more details are available in the Search & Navigation guide.
The in-page Table of Contents is available only when multiple sections are being viewed.
Use the navigation links in the gray bar above to view the table of contents that this content belongs to.
49 U.S.C. 322; 49 CFR 1.87. Subpart A also issued under 49 U.S.C. 5103, 31136, 31502, and 49 CFR 1.97. Subparts C, D, and E also issued under 49 U.S.C. 5112, 5125.
36 FR 4876, Mar. 13, 1971, unless otherwise noted.
59 FR 51830, Oct. 12, 1994, unless otherwise noted.
This content is from the eCFR and may include recent changes applied to the CFR. The official, published CFR, is updated annually and available below under "Published Edition". You can learn more about the process here.
Subscribe to: 49 CFR 397.73
View the most recent official publication:
These links go to the official, published CFR, which is updated annually. As a result, it may not include the most recent changes applied to the CFR. Learn more.
Information and documentation can be found in our developer resources.
The Code of Federal Regulations (CFR) is the official legal print publication containing the codification of the general and permanent rules published in the Federal Register by the departments and agencies of the Federal Government. The Electronic Code of Federal Regulations (eCFR) is a continuously updated online version of the CFR. It is not an official legal edition of the CFR.
Learn more about the eCFR, its status, and the editorial process.
Nomenclature changes to part 397 appear at 66 FR 49874, Oct. 1, 2001.
(a) Public information. Information on NRHM routing designations must be made available by the States and Indian tribes to the public in the form of maps, lists, road signs or some combination thereof. If road signs are used, those signs and their placements must comply with the provisions of the Manual on Uniform Traffic Control Devices for Streets and Highways, published by the Federal Highway Administration (FHWA), particularly the Hazardous Cargo signs identified as R14-2 and R14-3 shown in Section 2B-62 of that Manual. This publication may be accessed free of charge on the Internet at http://mutcd.fhwa.dot.gov/.
(b) Reporting and publishing requirements.
(1) Each State or Indian tribe, through its routing agency, shall provide information identifying all NRHM routing designations that exist within its jurisdiction:
(i) Electronically, by email to HMRouting@dot.gov; or
(ii) By mail to the Federal Motor Carrier Safety Administration, Office of Enforcement and Compliance (MC-SE), 1200 New Jersey Ave. SE, Washington, DC 20590-0001.
(2) States and Indian tribes shall also submit to FMCSA the current name of the State or Indian tribal agency responsible for NHRM highway routing designations. The State or Indian tribe shall include descriptions of these routing designations, along with the dates they were established. Information on any subsequent changes or new NRHM routing designations shall be furnished within 60 days after establishment to the FMCSA.
(3)
(i) FMCSA will consolidate information on the NRHM routing designations, make it available on its website, https://www.fmcsa.dot.gov/regulations/hazardous-materials/national-hazardous-materials-route-registry, and publish it annually in whole or as updates in the Federal Register.
(ii) Each State or Indian tribe may also publish this information in its official register of State or tribal regulations.
(c) A State or Tribally-designated route is effective only after it is published in the National Hazardous Materials Route Registry on FMCSA's website at https://www.fmcsa.dot.gov/regulations/hazardous-materials/national-hazardous-materials-route-registry.
[79 FR 59457, Oct. 2, 2014, as amended at 81 FR 68358, Oct. 4, 2016; 83 FR 22881, May 17, 2018; 83 FR 48726, Sept. 27, 2018; 87 FR 59037, Sept. 29, 2022]