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MR Number Brochure PDF

Document
mr-number-brochure.pdf (474.23 KB)

PHMSA no longer issues R-number Approvals and has transitioned to M-number Approvals that include expiration dates in an effort to accurately locate and verify manufacturing facilities prior to performing safety inspections.

DOT is committed to ensuring that information is available in appropriate alternative formats to meet the requirements of persons who have a disability. If you require an alternative version of files provided on this page, please contact PHMSA-Accessibility@dot.gov.
Effective Date: Sunday, July 1, 2018
Issued Date: Sunday, July 1, 2018