[Federal Register Volume 91, Number 148 (Tuesday, August 4, 2026)]
[Rules and Regulations]
[Pages 49345-49349]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2026-15823]


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DEPARTMENT OF TRANSPORTATION

Pipeline and Hazardous Materials Safety Administration

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

AGENCY: Pipeline and Hazardous Materials Safety Administration (PHMSA), 
Department of Transportation (DOT).

ACTION: Final rule.

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SUMMARY: This final rule modernizes the Materials of Trade (MOT) 
exception in the Hazardous Materials Regulations (HMR) by increasing 
the maximum allowable quantities of lithium batteries that can be 
transported as MOTs. This increase removes an undue regulatory burden 
which constrains the ability of construction, landscaping, mowing, tree 
service, food service, and entertainment companies to perform their 
trade.

DATES: This final rule is effective September 3, 2026.

FOR FURTHER INFORMATION CONTACT: Arthur Pollack, Standards and 
Rulemaking Division, Pipeline and Hazardous Materials Safety 
Administration (PHMSA), 1200 New Jersey Avenue SE, Washington, DC 
20590-0001, 202-366-8553, [email protected].

I. PHMSA Action

A. What action is PHMSA taking in this final rule?

    This final rule removes undue regulatory burdens by increasing the 
maximum allowable quantities of lithium batteries that can be 
transported as MOTs. This allowance applies to domestic companies in 
sectors such as construction, landscaping, mowing, tree service, food 
service, and entertainment--enabling them to carry the power sources 
required to perform their trade safely and more efficiently.

B. Does this action apply to me?

    Effective 30 days after publication of this final rule, lithium 
batteries transported under conditions meeting the definition of an MOT 
under 49 CFR 171.8 may take advantage of the increased quantity limits 
outlined in 49 CFR 173.6.

C. Why is PHMSA taking this action?

    PHMSA is taking this action in response to commenter feedback and 
to modernize 49 CFR 173.6 to update the quantity limits for lithium 
batteries under MOTs. The HMR currently limits the aggregate gross 
weight of materials of trade--other than certain diluted mixtures of 
Class 9 materials--in a motor vehicle to 200 kg (440 pounds). This 
revision increases this allowance for lithium batteries by authorizing 
up to 30 kg (66 pounds) per battery, a 500 kg (1102 pounds) gross 
vehicle limit, and no limit for batteries installed in equipment, while 
including safety provisions to prevent short circuits, shifting damage, 
and accidental activation. This action will reduce regulatory burdens 
for companies that transport batteries and battery-powered equipment in 
support of a trade without any compromise in safety because of the 
safety provisions included in the revision. Finally, this action 
advances the goals of multiple Executive Orders and provides annualized 
cost savings to American businesses--please see a more detailed 
discussion in the Executive Order (E.O.) 12866 discussion in ``Section 
III. Regulatory Analysis and Notices.''

II. Summary of Comments Received in Response to the Notice of Proposed 
Rulemaking

    PHMSA published a notice of proposed rulemaking (NPRM), cited as 
HM-268C, to gather feedback on modernizing the HMR to authorize 
increased quantities of lithium batteries under the MOTs exception.\1\ 
Please refer to the NPRM for background and discussion of the proposed 
change.
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    \1\ 90 FR 28578 (Jul. 1, 2025).
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    The following table alphabetically lists commenters to the NPRM:

[[Page 49346]]



                    Table 1--List of NPRM Commenters
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          Commenter name                         Docket No.
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American Pyrotechnics Association  PHMSA-2025-0091-0004
 (APA).
Battery Council International      PHMSA-2025-0091-0016
 (BCI).
Commercial Vehicle Safety          PHMSA-2025-0014
 Alliance (CVSA).
Council on the Safe                PHMSA-2026-0091-0011
 Transportation of Hazardous
 Articles, Inc. (COSTHA).
Dangerous Good Advisory Council    PHMSA-2025-0091-0013
 (DGAC).
Infotrac Inc.....................  PHMSA-2025-0091-0003
Medical Device Transport Council   PHMSA-2025-0091-0010
 (MDTC).
Outdoor Power Equipment Institute  PHMSA-2025-0091-0009
 (OPEI).
Pyro Shows, Inc..................  PHMSA-2025-0091-0005
Pyro Spectaculars, Inc...........  PHMSA-2025-0091-0007
Rechargeable Battery Association   PHMSA-2025-0091-0008
 (PRBA).
Utility Solid Waste Activities     PHMSA-2025-0091-0015
 Group (USWAG).
William Forbes...................  PHMSA-2025-0091-0012
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    A majority of respondents supported the proposal to amend the MOT 
exception to authorize the transportation of increased quantities of 
lithium batteries. Support for the rulemaking came from a diverse 
coalition of stakeholders, including battery and equipment 
manufacturers, pyrotechnics and entertainment associations, utility 
groups, and transportation safety councils. Organizations, including 
PRBA, OPEI, and BCI, argued that the current MOT quantity limits are 
outdated and overly restrictive, creating logistical and financial 
burdens that limit growth in their industries.
    Specific trade sectors also highlighted unique operational needs. 
For instance, APA, Pyro Shows, Inc., and Pyro Spectaculars, Inc. stated 
that the rulemaking would facilitate the efficient transport of drones 
used to supplement professional fireworks displays. Similarly, USWAG 
and the MDTC noted that the increased limits are essential for the 
transport of equipment used in electrical grid maintenance and life-
saving medical care, respectively. Infotrac Inc. and OPEI emphasized 
the practical relief this rulemaking would provide to landscaping and 
maintenance professionals who currently face difficulties transporting 
heavy equipment, such as robotic mowers and yard tractors, under fully 
regulated hazardous materials frameworks. Furthermore, safety 
organizations, such as COSTHA and DGAC, supported the proposal on the 
grounds that it provides necessary economic relief and operational 
efficiency while preserving essential safety frameworks, such as 
testing and labeling requirements.
    A few commenters had additional questions or concerns regarding 
this action. First, several respondents asked to extend the MOTs 
lithium battery allowance to sodium ion batteries. PHMSA did not 
include that proposal in the NPRM and is not prepared to address this 
issue in the final rule. PHMSA will consider adding sodium ion 
batteries to the MOT provision in a future rulemaking. In addition, 
commenters asked PHMSA to increase the 30 kg (66 pound) limit for 
lithium batteries to accommodate portable power stations--e.g., 
rechargeable devices providing household AC power, often marketed as 
battery packs or ``generators.'' PHMSA appreciates these comments, but 
the agency did not include this proposal in the NPRM and lacks 
sufficient data to support increasing the authorized weight limit in 
this proceeding. PHMSA may consider this request in a future 
rulemaking.
    Second, various stakeholders recommended that PHMSA authorize 
prototype and low-production-run batteries as MOT. These stakeholders 
noted that the NPRM would require all batteries to meet the testing 
criteria in Section 38.3 of the UN Manual of Tests and Criteria, and 
that this requirement would prevent untested prototypes--which are 
typically exempt from standard testing requirements--from being 
transported as MOT. PHMSA notes that prototype batteries are generally 
transported for testing, development, or certification. These 
commercial shipments are outside the scope of the MOT exception, which 
only applies to activities that are ``in direct support of a principal 
business.'' Furthermore, prototype batteries do not have an established 
safety record and generally pose a heightened risk of fire or thermal 
runaway during transport. Applying the strict safety requirements of 
the UN Manual of Tests and Criteria is necessary to mitigate the 
elevated risk to public safety that accompanies these shipments.
    Third, PRBA and BCI requested a revision to 49 CFR 173.6 to clarify 
that outer packaging is not required for lithium batteries that are 
adequately secured against shifting. This allowance currently exists 
for other receptacles and articles under the MOT provisions. PHMSA 
agrees that this revision promotes regulatory consistency and 
efficiency and is amending 49 CFR 173.6 to authorize explicitly the 
transport of lithium batteries without outer packaging if they are 
properly secured to prevent movement during transport.
    Finally, CVSA and Mr. William Forbes submitted comments opposing 
the proposed revisions to the MOT provisions. CVSA maintains that the 
current 440-pound weight allowance is sufficient and that increasing 
the quantity of lithium batteries directly correlates to the severity 
of potential incidents. CVSA cites recent crashes and fires involving 
lithium batteries that have resulted in significant highway and port 
closures. CVSA also points to the petitioner's own admission--that 
small businesses often lack the expertise to handle these materials 
outside of MOT--to argue that granting regulatory relief to 
inexperienced operators is inherently unsafe. Sharing similar concerns, 
Mr. Forbes characterizes the proposed weight increase as 
``astronomical'' and argues that it poses an ``inherent risk'' without 
sufficient safety data. Mr. Forbes contends that the rulemaking would 
place an undue burden on first responders charged with managing these 
incidents.
    PHMSA acknowledges these concerns but disagrees that the current 
440-pound allowance is sufficient to meet industry needs or that the 
proposed changes pose an unacceptable safety risk. The weight increase 
in this final rule is a modest and incremental adjustment--not an 
``astronomical'' expansion--that balances the operational needs of 
small businesses with robust safety standards. PHMSA is also retaining 
all mandatory performance-based packaging and hazard communication 
requirements currently applicable to lithium batteries.

[[Page 49347]]

Compliance with these requirements ensures that the increased weight 
allowance will not present an unacceptable risk to public safety. 
Consequently, PHMSA concludes that the final rule will not place an 
undue burden on first responders and that the economic benefits of 
facilitating commerce for small businesses--including the estimated 
annualized cost savings of $14.4 million (2024 dollars) outlined in the 
final Regulatory Impact Analysis (RIA) that is available for review in 
the rulemaking docket--outweigh any marginal increase in risk.
    For these reasons, PHMSA is publishing this final rule to modernize 
49 CFR 173.6 to update the quantity limits for lithium batteries under 
MOT. PHMSA finds these revisions will not have any adverse impact on 
safety.

III. Regulatory Analysis and Notices

A. Legal Authority

    This final rule is published under the authority of the Secretary 
of Transportation as set forth in the Federal Hazardous Materials 
Transportation Laws (49 U.S.C. 5101 et seq.) and delegated to the PHMSA 
Administrator pursuant to 49 CFR 1.97.

B. Executive Order 12866; Regulatory Planning and Review

    E.O. 12866 (Regulatory Planning and Review), as implemented by 49 
CFR part 5, subpart B, requires agencies to regulate in the ``most 
cost-effective manner,'' to make a ``reasoned determination that the 
benefits of the intended regulation justify its costs,'' and to develop 
regulations that ``impose the least burden on society.'' \2\ In 
arriving at those conclusions, E.O. 12866 requires that agencies should 
consider ``both quantifiable measures . . . and qualitative measures of 
costs and benefits that are difficult to quantify'' and ``maximize net 
benefits . . . unless a statute requires another regulatory approach.'' 
E.O. 12866 also requires that ``agencies should assess all costs and 
benefits of available regulatory alternatives, including the 
alternative of not regulating.'' Pursuant to 49 CFR part 5, subpart B, 
PHMSA and other Operating Administrations must generally choose the 
``least costly regulatory alternative that achieves the relevant 
objectives'' unless required by law or compelling safety need. In 
addition, 49 CFR part 5, subpart B specifies that regulations should 
generally ``not be issued unless their benefits are expected to exceed 
their costs.''
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    \2\ 58 FR 51735 (Oct. 4, 1993); 91 FR 22431 (Apr. 27, 2026); DOT 
Order 2100.7 (Ensuring Reliance Upon Sound Economic Analysis in 
Department of Transportation Policies, Programs, and Activities); 
see also DOT Order 2100.6B (Policies and Procedures for 
Rulemakings).
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    E.O. 12866 and 49 CFR part 5, subpart B also require that PHMSA 
submit ``significant regulatory actions'' to the Office of Information 
and Regulatory Affairs (OIRA) within the Executive Office of the 
President's Office of Management and Budget (OMB) for review. This 
final rule is not a significant regulatory action pursuant to E.O. 
12866 and has not been designated as a ``major rule'' as defined by the 
Congressional Review Act (5 U.S.C. 801 et seq.).
    PHMSA has complied with the requirements in E.O. 12866 as 
implemented by 49 CFR part 5, subpart B and determined this final rule 
will result in cost savings by reducing regulatory burdens and 
regulatory uncertainty for the construction, landscaping, food service, 
and entertainment industries by distinguishing the weight limits for 
lithium batteries from other Class 9 hazardous materials. PHMSA 
estimated that these changes will result in annualized cost savings of 
$14.4 million (2024 dollars) at three percent and seven percent 
discount rates. The annualized cost savings under the three and seven 
percent discount rates are the same given that the annual cost savings 
are constant over the 10-year analysis period. A copy of the final RIA 
is available for review in the rulemaking docket.

C. Executive Orders 14192 and 14219

    PHMSA has determined that this final rule is an E.O. 14192 
(Unleashing Prosperity Through Deregulation) deregulatory action.\3\ 
PHMSA finds the total costs of the rule on the regulated community will 
be less than zero. This final rule does not implicate any of the 
factors identified in section 2(a) of E.O. 14219 (Ensuring Lawful 
Governance) indicative of a regulation that is ``unlawful . . . [or] 
that undermine[s] the national interest.'' \4\
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    \3\ 90 FR 9065 (Feb. 6, 2025).
    \4\ 90 FR 10583 (Feb. 25, 2025).
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D. Energy-Related Executive Orders 13211, 14154, and 14156

    PHMSA has analyzed this final rule in accordance with the 
principles and criteria contained in E.O. 14156 (Declaring a National 
Energy Emergency) and E.O. 14154 (Unleashing American Energy).\5\ The 
President has declared a national emergency to address America's 
inadequate energy development production, transportation, refining, and 
generation capacity and asserted a Federal policy to unleash American 
energy by ensuring access to abundant supplies of reliable, affordable 
energy from (inter alia) the removal of ``undue burden[s]'' on the 
identification, development, or use of domestic energy resources. PHMSA 
finds this final rule to be consistent with E.O. 14156 and E.O. 14154 
because it will not hinder or unduly burden the transportation or 
production of energy or energy-related products.
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    \5\ 90 FR 8433 (Jan. 29, 2025); 90 FR 8353 (Jan. 29, 2025).
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    In addition, this final rule is not a ``significant energy action'' 
under E.O. 13211 (Actions Concerning Regulations That Significantly 
Affect Energy Supply, Distribution, or Use), which requires Federal 
agencies to prepare a Statement of Energy Effects for any ``significant 
energy action.'' \6\ Because this final rule is not a significant 
action under E.O. 12866, it will not have a significant adverse effect 
on supply, distribution, or energy use; accordingly, OIRA has not 
designated this final rule as a significant energy action.
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    \6\ 66 FR 28355 (May 22, 2001).
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E. Executive Order 13132: Federalism

    PHMSA analyzed this final rule in accordance with the principles 
and criteria contained in E.O. 13132 (Federalism) and the Presidential 
Memorandum (Preemption) published in the Federal Register on May 22, 
2009.\7\ E.O. 13132 requires agencies to assure meaningful and timely 
input by State and local officials in the development of regulatory 
policies that may have ``substantial direct effects on the States, on 
the relationship between the National Government and the States, or on 
the distribution of power and responsibilities among the various levels 
of government.'' The Federal Hazardous Materials Transportation laws 
contain an express preemption provision at 49 U.S.C. 5125(b) that 
preempts State, local, and Tribal requirements on certain covered 
subjects, unless the non-Federal requirements are ``substantively the 
same'' as the Federal requirements, including the following:
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    \7\ 74 FR 24693 (May 22, 2009).
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    (1) The designation, description, and classification of hazardous 
material;
    (2) The packing, repacking, handling, labeling, marking, and 
placarding of hazardous material;
    (3) The preparation, execution, and use of shipping documents 
related to hazardous material and requirements related to the number, 
contents, and placement of those documents;

[[Page 49348]]

    (4) The written notification, recording, and reporting of the 
unintentional release in transportation of hazardous material; and
    (5) The design, manufacture, fabrication, inspection, marking, 
maintenance, recondition, repair, or testing of a packaging or 
container represented, marked, certified, or sold as qualified for use 
in transporting hazardous material in commerce.
    This final rule addresses items covered in Paragraph 1 and 2 above 
and will preempt State, local, and Tribal requirements not meeting the 
``substantively the same'' standard. Though the final rule may operate 
to preempt some State requirements, it will not impose any regulation 
that has substantial direct effects on the States, the relationship 
between the National Government and the States, or the distribution of 
power and responsibilities among the various levels of government. The 
preemptive effect of the regulatory amendments in this final rule is 
limited to the minimum level necessary to achieve the objectives of the 
Federal Hazardous Materials Transportation laws. Therefore, the 
consultation and funding requirements of E.O. 13132 do not apply.

F. Regulatory Flexibility Act

    The Regulatory Flexibility Act (5 U.S.C. 601 et seq.) requires 
Federal agencies to conduct a Final Regulatory Flexibility Analysis 
(FRFA) for a final rule that has been subject to notice-and-comment 
rulemaking under the APA unless the agency head certifies that the 
final rule will not have a significant economic impact on a substantial 
number of small entities. E.O. 13272 (Proper Consideration of Small 
Entities in Agency Rulemaking) obliges agencies to establish procedures 
promoting compliance with the Regulatory Flexibility Act.\8\ DOT posts 
information on a dedicated web page to help small businesses understand 
and navigate Federal regulatory processes.\9\ This final rule was 
developed in accordance with E.O. 13272 and DOT implementing guidance 
to ensure compliance with the Regulatory Flexibility Act. Because the 
final rule will reduce burdens, PHMSA certifies that it does not have a 
significant impact on a substantial number of small entities.
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    \8\ 67 FR 53461 (Aug. 16, 2002).
    \9\ DOT, Rulemaking Requirements Related to Small Entities (last 
accessed Sept 3, 2024), available at: https://www.transportation.gov/regulations/rulemaking-requirements-concerning-small-entities.
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G. Unfunded Mandates Reform Act of 1995

    The Unfunded Mandates Reform Act (UMRA, 2 U.S.C. 1501 et seq.) 
requires agencies to assess the effects of Federal regulatory actions 
on State, local, and Tribal governments, and the private sector. For 
any proposed or final rule that includes a Federal mandate that may 
result in the expenditure by State, local, and Tribal governments, in 
the aggregate of $100 million or more (in 1996 dollars) in any given 
year, the agency must prepare, among other things, a written statement 
that qualitatively and quantitatively assesses the costs and benefits 
of the Federal mandate.
    This final rule does not impose unfunded mandates under UMRA 
because it does not result in costs of $100 million or more (in 1996 
dollars) per year for either State, local, or Tribal governments, or to 
the private sector.

H. National Environmental Policy Act

    PHMSA has analyzed this rule pursuant to the National Environmental 
Policy Act (NEPA; 42 U.S.C. 4321 et seq.) and has determined it is 
categorically excluded under 23 CFR 771.117(c)(20), which applies to 
the promulgation of rules, regulations, and directives. Under section 9 
of DOT Order 5610.1D, PHMSA may apply a categorical exclusion (CE) 
established in another Operating Administration's procedures. PHMSA 
followed the requirements outlined in DOT Order 5610.1D to apply the 
Federal Highway Administration's CE to this deregulatory action. PHMSA 
has determined no unusual circumstances are present under 23 CFR 
771.117(b). PHMSA's Categorical Exclusion Determination memo for this 
action is available on PHMSA's website.\10\
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    \10\ PHMSA, Implementing Procedures (Aug. 28, 2025), available 
at: https://www.phmsa.dot.gov/planning-and-analytics/environmental-analysis-and-compliance/implementing-procedures.
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I. Executive Order 13175

    PHMSA analyzed this final rule according to the principles and 
criteria in E.O. 13175 (Consultation and Coordination with Indian 
Tribal Governments) and DOT Order 5301.1A (Department of Transportation 
Tribal Consultation Policies and Procedures).\11\ E.O. 13175 requires 
agencies to assure meaningful and timely input from Tribal government 
representatives in the development of rules that significantly or 
uniquely affect Tribal communities by imposing ``substantial direct 
compliance costs'' or ``substantial direct effects'' on such 
communities or the relationship or distribution of power between the 
Federal Government and Tribes.
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    \11\ 65 FR 67249 (Nov. 9, 2000).
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    PHMSA assessed the impact of the final rule and determined that it 
will not significantly or uniquely affect Tribal communities or Indian 
Tribal governments. The rulemaking's regulatory amendments have a 
broad, national scope; therefore, this final rule will not 
significantly or uniquely affect Tribal communities, much less impose 
substantial compliance costs on Tribal governments or mandate Tribal 
action. For these reasons, PHMSA has concluded that the funding and 
consultation requirements of E.O. 13175 and DOT Order 5301.1A do not 
apply.

J. Paperwork Reduction Act

    The Paperwork Reduction Act (44 U.S.C. 3501 et seq.) and its 
implementing regulations at 5 CFR 1320.8(d) require PHMSA to provide 
interested members of the public and affected agencies with an 
opportunity to comment on information collection and recordkeeping 
requests. This rulemaking will not create, amend, or rescind any 
existing information collections.

K. Executive Order 13609 and International Trade Analysis

    E.O. 13609 (Promoting International Regulatory Cooperation) 
requires agencies to consider whether the impacts associated with 
significant variations between domestic and international regulatory 
approaches are unnecessary or may impair the ability of American 
business to export and compete internationally.\12\ In meeting shared 
challenges involving health, safety, labor, security, environmental, 
and other issues, international regulatory cooperation can identify 
approaches that are at least as protective as those that are or would 
be adopted in the absence of such cooperation. International regulatory 
cooperation can also reduce, eliminate, or prevent unnecessary 
differences in regulatory requirements.
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    \12\ 77 FR 26413 (May 4, 2012).
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    Similarly, the Trade Agreements Act of 1979 (Pub. L. 96-39), as 
amended by the Uruguay Round Agreements Act (Pub. L. 103-465), 
prohibits Federal agencies from establishing any standards or engaging 
in related activities that create unnecessary obstacles to the foreign 
commerce of the United States. For purposes of these requirements, 
Federal agencies may participate in the establishment of international 
standards, so long as the

[[Page 49349]]

standards have a legitimate domestic objective, such as providing for 
safety, and do not operate to exclude imports that meet this objective. 
The statute also requires consideration of international standards and, 
where appropriate, that they be the basis for U.S. standards.
    PHMSA engages with international standards setting bodies to 
protect the safety of the American public. PHMSA has assessed the 
effects of this deregulatory action and has determined that its 
regulatory amendments will not cause unnecessary obstacles to foreign 
trade.

L. Cybersecurity and Executive Order 14028

    E.O. 14028 (Improving the Nation's Cybersecurity) directed the 
Federal Government to improve its efforts to identify, to deter, and to 
respond to ``persistent and increasingly sophisticated malicious cyber 
campaigns.'' \13\ PHMSA has considered the effects of the final rule 
and has determined that its regulatory amendments will not materially 
affect the cybersecurity risk profile for affected entities.
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    \13\ 86 FR 26633 (May 17, 2021).
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M. Privacy Act Statement

    In accordance with 5 U.S.C. 553(c), DOT solicits comments from the 
public to inform its rulemaking process better. DOT posts these 
comments, without edit, including any personal information the 
commenter provides, to www.regulations.gov, as described in the system 
of records notice (DOT/ALL-14 FDMS), which can be reviewed at http://www.dot.gov/privacy. DOT's complete Privacy Act Statement in the 
Federal Register published on April 11, 2000, and may be viewed on 
DOT's website at http://www.dot.gov/privacy.

List of Subjects

49 CFR Part 173

    Hazardous materials transportation, Packaging and containers, 
Radioactive materials, Reporting and recordkeeping requirements.

    In consideration of the foregoing, PHMSA amends 49 CFR Chapter I as 
follows:

PART 173--SHIPPERS--GENERAL REQUIREMENTS FOR SHIPMENTS AND 
PACKAGINGS

0
1. The authority citation for part 173 continues to read as follows:

    Authority:  49 U.S.C. 5101-5128, 44701; 49 CFR 1.81, 1.96, and 
1.97.


0
2. Amend Sec.  173.6 by:
0
a. Adding paragraph (a)(7)(iii);
0
b. Revising paragraph (b)(3);
0
c. Adding paragraph (b)(6);
0
d. Revising paragraph (c)(4);
0
e. Adding paragraph (c)(5); and
0
f. Revising paragraph (d).
    The revisions to read as follows:


Sec.  173.6  Materials of trade exceptions.

    (a) * * *
    (7) * * *
    (iii) Except when the cell or battery is contained in equipment, 
cells and batteries described in 173.185 of this part may not exceed 30 
kg (66 pounds) net weight for each cell or battery and 500 kg (1102 
pounds) aggregate net weight on a motor vehicle. Cells and batteries, 
including when contained in or packed with equipment, must be of the 
type proven to meet the criteria in part III, sub-section 38.3 of the 
UN Manual of Tests and Criteria (IBR; see Sec.  171.7 of this 
subchapter).
* * * * *
    (b) * * *
    (3) Outer packagings are not required for receptacles (e.g., cans 
and bottles), articles, or batteries that are secured against shifting 
in cages, carts, bins, boxes, or compartments or by other means.
* * * * *
    (6) Cells and batteries, including cells and batteries contained in 
equipment, must be packaged or secured in a manner to prevent:
    (i) Short circuits;
    (ii) Damage caused by shifting or placement within the package, if 
applicable; and
    (iii) Accidental activation of the equipment.
* * * * *
    (c) * * *
    (4) Cells or batteries, including when contained in or packed with 
equipment, in packages exceeding 30 kg (66 pounds) net weight of 
batteries must be labeled with the Class 9 label as specified in Sec.  
172.447 and marked with the four-digit UN identification number, as 
applicable.
    (5) The operator of a motor vehicle that contains a material of 
trade must be informed of the presence of the hazardous material 
(including whether the package contains a reportable quantity) and must 
be informed of the requirements of this section.
    (d) Aggregate gross weight. Except for a material of trade 
authorized by paragraphs (a)(1)(iii) and (a)(7)(iii) of this section, 
the aggregate gross weight of all materials of trade on a motor vehicle 
may not exceed 200 kg (440 pounds).
* * * * *

    Issued in Washington, DC, on July 31, 2026, under the authority 
delegated in 49 CFR 1.97.
Paul J. Roberti,
Administrator, Pipeline and Hazardous Materials Safety Administration.
[FR Doc. 2026-15823 Filed 8-3-26; 8:45 am]
BILLING CODE 4910-60-P