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Rulemaking Documents Search

The following DOT Rules are linked to the Federal Register website. The Federal Register is the Federal Government’s official daily publication of rules, proposed rules, and notices of federal agencies, and provides a forum for public participation in the democratic process.

To learn more about DOT Rules, choose a document type, topic, or conduct a title search by keyword. Results will include a summary of the Rule and a link to the PDF of the appropriate Federal Register page. The Federal Register provides rulemaking documents dating back to 1995.

If you need to see rules prior to 1995, please visit our rulemakings archives:

Hazardous Materials Safety Rulemaking Archive

Pipeline Safety Rulemaking Archive
Your search for Documents of type Rule or Proposed Rule, affecting 49 CFR 100-199, and about Hazardous materials transportation
Results 151 - 200 of 259
  • PHMSA is amending the statutorily mandated registration and fee assessment program for persons who transport or offer for transportation certain categories and quantities of hazardous materials. In this final rule, we are eliminating the 24- hour,...
  • PHMSA proposes to amend the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180) to revise certain requirements applicable to the manufacture, maintenance, and use of DOT and MC specification cargo tank motor vehicles, DOT specification...
  • PHMSA (also, ``we'' or ``us'') is amending the Hazardous Materials Regulations (HMR) to: require cylinders of compressed oxygen and other oxidizing gases and packages of chemical oxygen generators to be placed in an outer packaging that meets certain...
  • This final rule revises the Hazardous Materials Regulations to maintain alignment with international standards by incorporating various amendments, including changes to proper shipping names, hazard classes, packing groups, special provisions,...
  • The Pipeline and Hazardous Materials Safety Administration (PHMSA), in consultation with the Federal Railroad Administration (FRA) and the Transportation Security Administration (TSA), is proposing to revise the current requirements in the Hazardous...
  • PHMSA is correcting an error in an interim final rule, published in the Federal Register on December 15, 2004. That interim final rule imposed a limited prohibition on offering for transportation and transportation of primary lithium batteries and...
  • PHMSA proposes to make miscellaneous amendments to the Hazardous Materials Regulations based on petitions for rulemaking and PHMSA initiatives. These proposed amendments are intended to update, clarify or provide relief from certain regulatory...
  • PHMSA is correcting a minor error in a final rule, published in the Federal Register on September 14, 2006. That final rule corrected editorial errors, made minor regulatory changes and, in response to requests for clarification, improved the clarity...
  • This final rule corrects editorial errors, makes minor regulatory changes and, in response to requests for clarification, improves the clarity of certain provisions in the Hazardous Materials Regulations (HMR). The intended effect of this rule is to...
  • In this NPRM, PHMSA is proposing to make miscellaneous amendments to the Hazardous Materials Regulations (HMR) based on changes to packaging requirements in the United Nations Recommendations on the Transport of Dangerous Goods, petitions for...
  • PHMSA proposes to amend the Hazardous Materials Regulations to maintain alignment with international standards by incorporating various amendments, including changes to proper shipping names, hazard classes, packing groups, special provisions,...
  • This final rule revises the Hazardous Materials Regulations to address a known safety problem with cylinders manufactured of aluminum alloy 6351-T6. The revisions include an inspection and testing program for early detection of sustained load cracking...
  • This rule proposes to amend the statutorily mandated registration and fee assessment program for persons who transport or offer for transportation certain categories and quantities of hazardous materials. For those registrants not qualifying as a small...
  • On December 9, 2005, PHMSA published a final rule to revise terminology, definitions, and requirements for consistency with the Hazardous Materials Safety and Security Reauthorization Act of 2005. These amendments included revising the definitions of...
  • In this final rule, PHMSA is amending the Hazardous Materials Regulations (HMR) to adopt standards for the design, construction, maintenance and use of cylinders and multiple-element gas containers based on the standards contained in the United Nations...
  • PHMSA is revising the transportation requirements for infectious substances, including regulated medical waste, to adopt new classification criteria, new exceptions, and packaging and hazard communication requirements consistent with revised...
  • The Pipeline and Hazardous Materials Safety Administration is revising its procedural regulations for issuing administrative determinations as to whether Federal hazardous material transportation law preempts a State, local, or Indian tribe requirement...
  • On January 23, 2006, PHMSA published a final rule entitled ``Requirements for Lighters and Lighter Refills'' that amended requirements in the Hazardous Materials Regulations pertaining to the examination, testing, certification, and transportation of...
  • This final rule amends the requirements in the Hazardous Materials Regulations (HMR) for the transportation of hazardous materials by aircraft. This final rule clarifies the applicability of part 175; clarifies the exceptions from regulation for...
  • The Pipeline and Hazardous Materials Safety Administration is revising its regulations to reflect revisions to the civil and criminal penalties in the Hazardous Materials Safety and Security Reauthorization Act (Title VII of the Safe, Accountable,...
  • In this notice of proposed rulemaking, the Pipeline and Hazardous Materials Safety Administration proposes to amend the Hazardous Materials Regulations by revising and consolidating the requirements applicable to the use of the International Civil...
  • This final rule amends requirements in the Hazardous Materials Regulations (HMR) pertaining to the examination, testing, certification, and transportation of lighters and lighter refills. This action will clarify regulatory requirements and, where...
  • This final rule revises terminology, definitions, and requirements for consistency with the Hazardous Materials Safety and Security Reauthorization Act of 2005. These amendments include revising the definitions of ``hazmat employee'' and ``hazmat...
  • On September 10, 2003, the Research and Special Programs Administration--the predecessor agency to the Pipeline and Hazardous Materials Safety Administration published a notice of proposed rulemaking (NPRM) to propose an inspection and testing program...
  • This final rule corrects editorial errors, makes minor regulatory changes and, in response to requests for clarification, improves the clarity of certain provisions in the Hazardous Materials Regulations (HMR). In addition, this final rule revises...
  • PHMSA is amending the Hazardous Materials Regulations to add a definition for ``person who offers or offeror.'' The definition adopted in this final rule codifies long-standing interpretations and administrative determinations on the applicability of...
  • On February 23, 2005, the U.S. Department of Transportation, Pipeline and Hazardous Materials Safety Administration, Office of Pipeline Safety (OPS) issued a final rule adopting as a final rule, the interim final rule which was issued on January 5,...
  • On December 20, 2004, the Research and Special Programs Administration (RSPA)--the predecessor agency to the Pipeline and Hazardous Materials Safety Administration (PHMSA)--published a final rule under Docket Number RSPA-04-17036 (HM-215G) amending the...
  • This final rule amends the Hazardous Materials Regulations by incorporating miscellaneous changes based on petitions for rulemaking and PHMSA initiatives. The intended effect of these regulatory changes is to update, clarify or provide relief from...
  • This final rule notice announces Office of Management and Budget (OMB) approval of information collection request (ICR) OMB No. 2137-0620, ``Inspection and Testing of Meter Provers.'' This information collection has been approved by OMB until May 31,...
  • PHMSA is proposing to revise the transportation requirements for infectious substances, including regulated medical waste, to adopt new classification criteria and packaging requirements consistent with revised international standards and to clarify...
  • On October 30, 2003, the Research and Special Programs Administration, predecessor agency to PHMSA, published a final rule to clarify the applicability of the Hazardous Materials Regulations to functions and activities related to the safe and secure...
  • PHMSA proposes to amend the Hazardous Materials Regulations (HMR) to adopt standards for the design, construction, maintenance and use of cylinders and multiple-element gas containers (MEGCs) based on the standards contained in the United Nations (UN)...
  • This final rule adopts without change the April 1, 2005, mandatory compliance date for the notification and record retention requirements for aircraft operators transporting hazardous materials, as adopted in an interim final rule in this proceeding...
  • On January 5, 1993, the U.S. Department of Transportation, Pipeline and Hazardous Materials Safety Administration, Office of Pipeline Safety (OPS) issued an interim final rule establishing oil spill response planning requirements for onshore oil...
  • This final rule amends the Hazardous Materials Regulations by incorporating into the regulations the provisions of certain widely used exemptions which have established a history of safety and which may be converted into regulations for general use. We...
  • RSPA is proposing to amend the Hazardous Materials Regulations to prohibit flammable liquids from being transported in unprotected product piping on existing and newly manufactured DOT specification cargo tank motor vehicles. If adopted as proposed,...
  • RSPA is amending the Hazardous Materials Regulations (HMR) to maintain alignment with international standards by incorporating various amendments, including changes to proper shipping names, hazard classes, packing groups, special provisions, packaging...
  • To protect life and property, RSPA (we), working closely with the Federal Aviation Administration (FAA), is issuing an interim final rule imposing a limited prohibition on offering for transportation and transportation of primary (non-rechargeable)...
  • RSPA is proposing changes to the requirements in the Hazardous Materials Regulations (HMR) for the transportation of hazardous materials by aircraft. These proposed changes include clarifying the applicability of part 175; excepting cargo aircraft from...
  • This final rule amends the Hazardous Materials Regulations (HMR) to improve hazard communication for hazardous materials transported in commerce. Revisions adopted in this final rule include: permitting the use of the Pantone Formula, an industry guide...
  • RSPA is correcting errors in a final rule in this docket, published in the Federal Register on September 13, 2004, that amended requirements in the Hazardous Materials Regulations (HMR) pertaining to the transportation of radioactive materials based on...
  • RSPA is proposing to add to the Hazardous Materials Regulations a definition for ``person who offers or offeror'' in order to codify long-standing interpretations on the applicability of those regulations.
  • RSPA is correcting errors in its final rule in this docket, published in the Federal Register on January 26, 2004, that amended requirements in the Hazardous Materials Regulations (HMR) pertaining to the transportation of radioactive materials based on...
  • This final rule corrects editorial errors, makes minor regulatory changes and, in response to requests for clarification, improves the clarity of certain provisions in the Hazardous Materials Regulations (HMR). The intended effect of this rule is to...
  • This interim final rule extends the compliance date of the notification and record retention requirements for aircraft operators transporting hazardous materials. On March 25, 2003 RSPA published a final rule that requires an aircraft operator...
  • RSPA proposes to amend requirements in the Hazardous Materials Regulations for the examination, testing, certification, and transportation of lighters and lighter refills. This action will clarify regulatory requirements and, where appropriate,...
  • RSPA proposes to make miscellaneous amendments to the Hazardous Materials Regulations based on petitions for rulemaking and RSPA initiatives. These proposed amendments are intended to update, clarify or provide relief from certain regulatory requirements.
  • This final rule corrects errors in the 49 CFR 172.101 Hazardous Materials Table (HMT) made during the recent publication of 49 CFR Parts 100 to 185. In the most recent publication of 49 CFR Parts 100-185, a number of entries in the HMT were...
  • On July 31, 2003, RSPA published a final rule under Docket Number RSPA-2002-13658 (HM-215E) amending the Hazardous Materials Regulations (HMR) based on corresponding provisions of international standards. The revisions were made to facilitate the...