DEPARTMENT OF TRANSPORTATION

49 CFR Parts 171 and 174

[Docket No. PHMSA–2025–0099 (HM–268K)]

RIN 2137–AG13

Hazardous Materials: Removing Burdensome Rail Reporting Requirements

ACTION: Notice of Proposed Rulemaking (NPRM).

SUMMARY: PHMSA proposes to remove or replace various rail transportation requirements that are either obsolete, overly burdensome, or conflict with other requirements in the Hazardous Materials Regulations (HMR).

DATES: Comments must be received on or before September 2, 2025.

READ MORE: https://www.govinfo.gov/content/pkg/FR-2025-07-01/pdf/2025-12098.pdf

DEPARTMENT OF TRANSPORTATION

49 CFR Parts 171, 172, and 173

[Docket No. PHMSA–2025–0093 (HM–268E)]

RIN 2137–AG07

Hazardous Materials: Remove Redundant List of U.S. EPA CERCLA Hazardous Substances

ACTION: Notice of Proposed Rulemaking (NPRM).

SUMMARY: This NPRM proposes to revise the Hazardous Materials Regulations (HMR) to remove redundant pages contained in an Appendix that repeats references already listed in U.S. Environmental Protection Agency (EPA) regulations.

DATES: Comments must be received on or before September 2, 2025.

READ MORE: https://www.govinfo.gov/content/pkg/FR-2025-07-01/pdf/2025-12067.pdf

DEPARTMENT OF TRANSPORTATION

49 CFR Part 172

[Docket No. PHMSA–2025–0092 (HM–268D)]

RIN 2137–AG06

Hazardous Materials: Reducing Undue Paperwork Burdens to Domestic Carriers

ACTION: Notice of proposed rulemaking (NPRM).

SUMMARY: This NPRM proposes to revise the Hazardous Materials Regulations (HMR) to provide domestic carriers the option to maintain electronic copies of emergency response information rather than requiring a hard copy printed on paper.

DATES: Comments must be received on or before September 2, 2025.

READ MORE: https://www.govinfo.gov/content/pkg/FR-2025-07-01/pdf/2025-12066.pdf

DEPARTMENT OF TRANSPORTATION

49 CFR Part 107

[Docket No. PHMSA–2025–0097 (HM–268I)]

RIN 2137–AG11

Hazardous Materials: Reducing Recordkeeping Requirements for Domestic Carriers

ACTION: Notice of proposed rulemaking (NPRM).

SUMMARY: This NPRM proposes to revise the hazardous materials program procedures to allow motor and vessel carriers the option to carry their PHMSA certificate of registration in electronic form.

DATES: Comments must be received on or before September 2, 2025.

READ MORE: https://www.govinfo.gov/content/pkg/FR-2025-07-01/pdf/2025-12096.pdf

DEPARTMENT OF TRANSPORTATION

49 CFR Parts 172 and 173

[Docket No. PHMSA–2025–0090 (HM–268B)]

RIN 2137–AG04

Hazardous Materials: Reducing Costs to Domestic Shippers and Carriers of Limited Quantities

ACTION: Notice of proposed rulemaking (NPRM).

SUMMARY: This NPRM proposes to remove undue regulatory burdens by allowing for a reduced sized marking for limited quantity shipments of hazardous materials.

DATES: Comments must be received on or before September 2, 2025.

READ MORE: https://www.govinfo.gov/content/pkg/FR-2025-07-01/pdf/2025-12127.pdf

DEPARTMENT OF TRANSPORTATION

49 CFR Part 173

[Docket No. PHMSA–2025–0091 (HM–268C)]

RIN 2137–AG05

Hazardous Materials: Reducing Burdens on Domestic Companies Using Battery-Powered Equipment in Trades

ACTION: Notice of proposed rulemaking (NPRM).

SUMMARY: This NPRM proposes to amend the Materials of Trade (MOTs) exceptions to allow for the transportation of increased quantities of lithium batteries. The current MOT exceptions unnecessarily limit the number and size of lithium batteries that can be safely transported by domestic construction, landscaping, mowing, tree service, food service, and entertainment companies in support of performing a trade.

DATES: Comments must be received on or before September 2, 2025.

READ MORE: https://www.govinfo.gov/content/pkg/FR-2025-07-01/pdf/2025-12065.pdf

DEPARTMENT OF TRANSPORTATION

49 CFR Part 171

[Docket No. PHMSA–2025–0089 (HM–268A)]

RIN 2137–AG03

Hazardous Materials: Reducing Burdens on Domestic Aerosol Shippers

ACTION: Notice of proposed rulemaking (NPRM).

SUMMARY: This NPRM proposes to update the definition of an aerosol to eliminate unnecessary regulatory burdens and maintain consistency with current international transportation standards.

DATES: Comments must be received on or before September 2, 2025.

READ MORE: https://www.govinfo.gov/content/pkg/FR-2025-07-01/pdf/2025-12064.pdf

DEPARTMENT OF TRANSPORTATION

49 CFR Part 173

[Docket No. PHMSA–2025–0094 (HM–268F)]

RIN 2137–AG08

Hazardous Materials: Reducing Burdens by Allowing Continued Use of Department of Transportation Special Permit Packagings

ACTION: Notice of proposed rulemaking (NPRM).

SUMMARY: This NPRM proposes to revise the Hazardous Materials Regulations (HMR) to allow for the continued use of packagings authorized under a manufacturing special permit for duration of the useful life of the package. The current HMR provisions require an otherwise safe and usable package to be discontinued solely because the original special permit has expired or was not renewed.

DATES: Comments must be received on or before September 2, 2025.

READ MORE: https://www.govinfo.gov/content/pkg/FR-2025-07-01/pdf/2025-12081.pdf

DEPARTMENT OF TRANSPORTATION

49 CFR Part 172

[Docket No. PHMSA–2025–0098 (HM–268J)]

RIN 2137–AG12

Hazardous Materials: Reduce Training Burdens for America’s Farmers

ACTION: Notice of proposed rulemaking (NPRM).

SUMMARY: This NPRM proposes to streamline the exceptions for in-depth security training requirements for farmers by raising the dollar amount of the exception threshold to account for inflation.

DATES: Comments must be received on or before September 2, 2025.

READ MORE: https://www.govinfo.gov/content/pkg/FR-2025-07-01/pdf/2025-12095.pdf

DEPARTMENT OF TRANSPORTATION

49 CFR Parts 107, 171, 172, and 173

[Docket No. PHMSA–2025–0105 (HM–268Q)]

RIN 2137–AG19

Hazardous Materials: Allowing Fireworks Certification Agencies (FCAs) To Approve Professional Fireworks

SUMMARY: This NPRM proposes to expand the Fireworks Certification Agency’s (FCA) authority to approve fireworks constructed to the APA 87–1A standard to include those fireworks constructed to the APA 87–1B and APA 87–1C standards. PHMSA is also proposing to revise its procedural regulations to facilitate new FCA authorizations. These proposed actions are intended to streamline PHMSA’s fireworks approval process and provide the industry with regulatory flexibility.

DATES: Comments must be received on or before September 2, 2025.

READ MORE: https://www.govinfo.gov/content/pkg/FR-2025-07-01/pdf/2025-12082.pdf

DEPARTMENT OF TRANSPORTATION

49 CFR Part 177

[Docket No. PHMSA–2025–0100 (HM–268L)]

RIN 2137–AG14

Hazardous Materials: Adoption of Department of Transportation Special Permits 12412 and 11646 Into the Hazardous Materials Regulations

ACTION: Notice of proposed rulemaking (NPRM).

SUMMARY: This NPRM proposes adopting the provisions of Department of Transportation (DOT) Special Permit (SP) 12412 and DOT–SP 11646 into the hazardous materials regulations. These revisions would provide greater regulatory flexibility and eliminate the need for special permit renewal requests, reducing paperwork burdens and facilitating commerce while maintaining an equivalent level of safety.

DATES: Comments must be received on or before September 2, 2025.

READ MORE: https://www.govinfo.gov/content/pkg/FR-2025-07-01/pdf/2025-12099.pdf

DEPARTMENT OF TRANSPORTATION

49 CFR Parts 172 and 173

[Docket No. PHMSA–2025–0104 (HM–268P)] RIN 2137–AG18

Hazardous Materials: Adoption of Department of Transportation Special Permit 21478 .

ACTION: Notice of proposed rulemaking (NPRM).

SUMMARY: PHMSA proposes to adopt the provisions of DOT special permit (SP) 21478 into the Hazardous Materials Regulations (HMR). Adoption of this special permit would authorize intermediate bulk containers (IBCs) containing a residue of a certain hazardous materials to be transported without shipping papers, placards, and motor vehicle marking of the UN identification (ID) number subject to additional operational controls. The proposed revisions provide relief from undue burdens of hazard communication requirements for lowrisk transportation of empty packaging and eliminate the need for special permit renewal requests.

DATES: Comments must be received on or before September 2, 2025.

READ MORE: https://www.govinfo.gov/content/pkg/FR-2025-07-01/pdf/2025-12090.pdf

DEPARTMENT OF TRANSPORTATION

49 CFR Parts 171 and 173

[Docket No. PHMSA–2025–0102 (HM–268N)] RIN 2137–AG16

Hazardous Materials: Adoption of Department of Transportation Special Permit 21379

ACTION: Notice of proposed rulemaking (NPRM).

SUMMARY: This NPRM proposes to adopt the provisions of DOT special permit (SP) 21379 into the hazardous materials regulations to streamline the transportation of large refrigerating machines filled with flammable gases.

DATES: Comments must be received on or before September 2, 2025.

READ MORE: https://www.govinfo.gov/content/pkg/FR-2025-07-01/pdf/2025-12100.pdf

DEPARTMENT OF TRANSPORTATION

49 CFR Parts 171 and 173

[Docket No. PHMSA–2025–0101 (HM–268M)]

RIN 2137–AG15

Hazardous Materials: Adoption of Department of Transportation Special Permit 21287

ACTION: Notice of proposed rulemaking (NPRM).

SUMMARY: This NPRM proposes to adopt a special permit into the hazardous materials regulations to streamline the transportation of small refrigerating machines that contain limited quantities of certain flammable gases, including common household appliances such as refrigerators, window-mounted airconditioning units, and dehumidifiers.

DATES: Comments must be received on or before September 2, 2025.

READ MORE: https://www.govinfo.gov/content/pkg/FR-2025-07-01/pdf/2025-12121.pdf

DEPARTMENT OF TRANSPORTATION

49 CFR Part 107

[Docket No. PHMSA–2025–0097 (HM–268I)] RIN 2137–AG11

Hazardous Materials: Reducing Recordkeeping Requirements for Domestic Carriers

ACTION: Notice of proposed rulemaking (NPRM).

SUMMARY: This NPRM proposes to revise the hazardous materials program procedures to allow motor and vessel carriers the option to carry their PHMSA certificate of registration in electronic form.

DATES: Comments must be received on or before September 2, 2025.

READ MORE: https://www.govinfo.gov/content/pkg/FR-2025-07-01/pdf/2025-12085.pdf

DEPARTMENT OF TRANSPORTATION

49 CFR Part 107

[Docket No. PHMSA–2025–0096 (HM–268H)] RIN 2137–AG10

Hazardous Materials: Modernizing Payments To and From America’s Bank Account.

ACTION: Notice of Proposed Rulemaking (NPRM).

SUMMARY: PHMSA proposes to modernize the payment system for hazardous materials registration to require electronic submissions via the Department of Transportation (DOT) eCommerce internet site and eliminate the option to pay using a paper check. This revision is intended to increase government efficiency by eliminating the burdens associated with processing paper checks from the regulatory community.

DATES: Comments must be received on or before September 2, 2025.

READ MORE: https://www.govinfo.gov/content/pkg/FR-2025-07-01/pdf/2025-12085.pdf

DEPARTMENT OF TRANSPORTATION

49 CFR Part 107

[Docket No. PHMSA–2025–0095 (HM–268G)] RIN 2137–AG09

Hazardous Materials: Improving Efficiencies for Special Permits and Approvals Renewals

ACTION: Notice of proposed rulemaking (NPRM).

SUMMARY: This NPRM streamlines the Hazardous Materials Regulations by allowing a grantee to file an application to renew a special permit or approval any time before its expiration date rather than requiring the application to be filed 60 days in advance.

DATES: Comments must be received on or before September 2, 2025.

READ MORE: https://www.govinfo.gov/content/pkg/FR-2025-07-01/pdf/2025-12084.pdf

DEPARTMENT OF TRANSPORTATION

Pipeline and Hazardous Materials Safety Administration

49 CFR Parts 172, 173, 174, 179, and 180

[Docket No. PHMSA–2018–0025 (HM–264)]

RIN 2137–AF40

Hazardous Materials: Liquefied Natural Gas by Rail Administration (PHMSA), Department of Transportation

ACTION: Notification of conforming amendments.

SUMMARY: PHMSA, in coordination with the Federal Railroad Administration, is amending the Hazardous Materials Regulations in response to the recent decision of the United States Court of Appeals for the District of Columbia Circuit in Sierra Club, et al. v. DOT, et al., No. 20–1317 (Jan. 17, 2025).

DATES: These amendments are effective as of June 23, 2025.

READ MORE: https://www.govinfo.gov/content/pkg/FR-2025-06-23/pdf/2025-11436.pdf

DEPARTMENT OF TRANSPORTATION

49 CFR Parts 190, 191, 192, 193, 194, 195, 196, 197, 198, and 199

[Docket No. PHMSA–2025–0050] RIN 2137–AF73

Pipeline Safety: Mandatory Regulatory Reviews To Unleash American Energy and Improve Government Efficiency

AGENCY: Pipeline and Hazardous Materials Safety Administration (PHMSA)

ACTION: Advance notice of proposed rulemaking (ANPRM).

SUMMARY: PHMSA is publishing this advance notice of proposed rulemaking (ANPRM) to solicit stakeholder feedback on whether to repeal or amend any requirements in the Pipeline Safety Regulations to eliminate undue burdens on the identification, development, and use of domestic energy resources and to improve government efficiency.

DATES: Comments on this ANPRM must be submitted by August 4, 2025.

READ MORE: https://www.govinfo.gov/content/pkg/FR-2025-06-04/pdf/2025-10090.pdf

DEPARTMENT OF TRANSPORTATION

49 CFR Parts 106, 107, 171, 172, 173, 174, 175, 176, 177, 178, 179 and 180

[Docket No. PHMSA–2025–0032 (HM–265B)] RIN 2137–AF74

Mandatory Regulatory Reviews To Unleash American Energy and Improve Government Efficiency

AGENCY: Pipeline and Hazardous Materials Safety Administration (PHMSA),

ACTION: Advance notice of proposed rulemaking (ANPRM).

SUMMARY: PHMSA is publishing this advance notice of proposed rulemaking (ANPRM) to solicit stakeholder feedback on whether to repeal or amend any requirements in the Hazardous Materials Rulemaking Procedures and Program Procedures, or the Hazardous Materials Regulations to eliminate undue burdens on the identification, development, and use of domestic energy resources and to improve government efficiency.

DATES: Comments on this ANPRM must be received by August 4, 2025.

READ MORE: https://www.govinfo.gov/content/pkg/FR-2025-06-04/pdf/2025-10091.pdf