Document ID: NHTSA-2019-0011-0001
Agency: nhtsa
Document Type: Proposed Rule
Title: Federal Motor Vehicle Safety Standards: Tires
Posted Date: 2019-12-19T05:00Z

[Federal Register Volume 84, Number 244 (Thursday, December 19, 2019)]
[Proposed Rules]
[Pages 69698-69707]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2019-27209]

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DEPARTMENT OF TRANSPORTATION

National Highway Traffic Safety Administration

49 CFR Part 571

[Docket No. NHTSA-2019-0011]
RIN 2127-AL96

Federal Motor Vehicle Safety Standards; Tires

AGENCY: National Highway Traffic Safety Administration (NHTSA), 
Department of Transportation (DOT).

ACTION: Advance notice of proposed rulemaking (ANPRM).

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SUMMARY: NHTSA is issuing this ANPRM to seek comment on provisions 
contained in the Federal Motor Vehicle Safety Standards for tires. 
NHTSA is reviewing existing regulations to determine if updates are 
necessary to keep pace with new technology. This notice focuses on 
tire-related comments received to the DOT's regulatory review and 
request for public comment notice issued on October 2, 2017. NHTSA 
seeks comment on matters related to the existing strength test, the 
bead unseating resistance test, and the tire endurance test. Lastly, 
the agency seeks comment on the current use and relevance of some tire 
marking regulations and other matters related to new tire technologies. 
Comments to this notice will inform NHTSA as it considers regulatory 
reform aimed at reducing regulatory burden while maintaining existing 
safety levels for motor vehicle tires.

DATES: Comments must be received no later than February 18, 2020. See 
Public Participation heading of the SUPPLEMENTARY INFORMATION section 
of this document for more information about written comments.

ADDRESSES: You may submit comments electronically to the docket 
identified in the heading of this document by visiting the following 
website:
     Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the online instructions for submitting 
comments.
    Alternatively, you can file comments using the following methods:
     Mail: Docket Management Facility: U.S. Department of 
Transportation, 1200 New Jersey Avenue SE, West Building Ground Floor, 
Room W12-140, Washington, DC 20590-0001.
     Hand Delivery or Courier: West Building Ground Floor, Room 
W12-140, 1200 New Jersey Avenue SE, between 9 a.m. and 5 p.m. ET, 
Monday through Friday, except Federal holidays.
     Fax: (202) 493-2251.
    Regardless of how you submit your comments, you should mention the 
docket number identified in the heading of this document.
    Instructions: For detailed instructions on submitting comments and 
additional information on the rulemaking process, see the Public 
Participation heading of the SUPPLEMENTARY INFORMATION section of this 
document. Note that all comments received will be posted without change 
to http://www.regulations.gov, including any personal information 
provided. Please see the Privacy Act heading below.
    Privacy Act: Anyone is able to search the electronic form of all 
comments received into any of our dockets by the name of the individual 
submitting the comment (or signing the comment, if submitted on behalf 
of an association, business, labor union, etc.). You may review DOT's 
complete Privacy Act Statement in the Federal Register published on 
April 11, 2000 (65 FR 19477-78) or at http://www.transportation.gov/privacy.
    Confidential Information: If you wish to submit any information 
under a claim of confidentiality, you should submit three copies of 
your complete submission, including the information you claim to be 
confidential business information, to the Chief Counsel, NHTSA, at the 
address given below under FOR FURTHER INFORMATION CONTACT. In addition, 
you should submit two copies, from which you have deleted the claimed 
confidential business information, to Docket Management at the address 
given above under ADDRESSES. When you send a comment containing 
information claimed to be confidential business information, you should 
include a cover letter setting forth the information specified in the 
confidential business information regulation. (49 CFR part 512.)
    Docket: For access to the docket to read background documents or 
comments received, go to http://www.regulations.gov. Follow the online 
instructions for accessing the dockets.

FOR FURTHER INFORMATION CONTACT: Please contact, Jesus Valentin-Ruiz, 
Office of Crash Avoidance Standards, telephone 202-366-1810, or David 
Jasinski, Office of the Chief Counsel, telephone 202-366-2992. You may 
send mail to both of these officials at the National Highway Traffic 
Safety Administration, 1200 New Jersey Avenue SE, Washington, DC 20590 
or fax to 202-493-0073.

SUPPLEMENTARY INFORMATION: 

Table of Contents

I. Introduction
II. Background
III. Considerations Regarding Federal Motor Vehicle Safety Standards 
for Tires
    a. Tire Strength Test
    b. Tire Bead Unseated Test
    c. Tire Endurance
    d. Tire Markings
    e. Other Tire-Related Issues
IV. Additional Questions
V. Public Participation
VI. Rulemaking Notice and Analyses

I. Introduction

    On October 2, 2017, DOT issued a Federal Register notice requesting 
public comment on existing rules and other agency actions that are 
candidates for repeal, replacement, suspension, or modification (82 FR 
45750). This public input was aimed to inform DOT's review of its 
existing regulations and other agency actions to evaluate their 
continued necessity, determine whether they are crafted effectively to 
solve current safety issues, and evaluate whether they potentially 
burden the development or use of domestically produced energy 
resources. DOT received almost 3,000 comments in response to this 
notice, of which approximately twenty-three addressed

[[Page 69699]]

rules and agency actions under the scope of NHTSA. The agency is 
publishing a series of advance notices of proposed rulemaking (ANPRMs) 
on various topics derived from input submitted by stakeholders in 
response to the DOT notice and NHTSA's own regulatory review. This 
ANPRM discusses requirements and test procedures for tires that may be 
candidates for repeal, replacement, suspension or modification.
    As part of its mission, NHTSA issues Federal Motor Vehicle Safety 
Standards (FMVSSs) and regulations for new vehicles and motor vehicle 
equipment to save lives, prevent injuries, and reduce economic costs 
due to road traffic crashes. NHTSA also reviews and revises existing 
standards and regulations to respond to, for example, the introduction 
of new technology in motor vehicles. In 2017, section 2(a) of Executive 
Order (E.O.) 13771, Reducing Regulation and Controlling Regulatory 
Costs, establishes that unless prohibited by law, whenever an agency 
publicly proposes for notice and comment or otherwise promulgates a new 
regulation, it must identify at least two existing regulations to be 
repealed. Also, according to E.O. 13777, Enforcing the Regulatory 
Reform Agenda, each agency must evaluate existing regulations, and make 
recommendations for their repeal, replacement, or modification. As part 
of this process, the Department is directed to seek input from entities 
significantly affected by its regulations. In response to the October 
2, 2017 notice, the U.S. Tire Manufacturers Association (USTMA) \1\ 
identified tire-related regulations that, in its view, are outdated, 
unnecessary, or ineffective. USTMA stated that the regulations 
identified present an opportunity to lower regulatory burdens on tire 
manufacturers and increase regulatory effectiveness by eliminating 
regulations that do not reflect current technology and removing 
requirements where compliance costs exceed benefits. Topics identified 
include: (1) Tire strength (plunger energy) tests in FMVSSs No. 109, 
119, and 139; (2) bead unseating resistance tests in FMVSS Nos. 109 and 
139; (3) the tire endurance test in FMVSS No. 139; (4) the Uniform Tire 
Quality Grading Standards (UTQGS) in 49 CFR 575.104; and (5) tire 
markings for ply rating, tubeless, and radial in FMVSS No. 139.
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    \1\ USTMA, formerly Rubber Manufactures Association (RMA), 
represents tire manufacturers with operations in the United States.
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    USTMA mentioned that each of the regulations identified do not 
appropriately address how tire technologies have changed since the 
regulations' inception. Continental Automotive Systems, Inc. 
(Continental), a member of USTMA, agreed with the comments, with 
emphasis on the elimination of the tire strength test in FMVSS Nos. 109 
and 139. Comments received on the UTQGS, along with other consumer 
information topics are not the focus of this ANPRM and may be addressed 
in a separate rulemaking.\2\
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    \2\ RIN 2127-AK76.
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    NHTSA seeks focused comment on issues and possible modifications to 
the strength test and bead unseating resistance test for modern tires. 
NHTSA also seeks comment on the certain aspects of the tire endurance 
test. Lastly, the agency seeks comment on the current use and relevance 
of some tire marking regulations as well as other matters related to 
new tire technologies. Safety standards for tire rims (FMVSSs No. 110 
and 120) and tire pressure monitoring systems (FMVSS No. 138) are not 
the focus of this notice. Similarly, issues related to previously 
proposed upgrades to FMVSS No. 119, are not the focus of this 
notice.\3\
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    \3\ RIN 2127-AK17.
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II. Background

a. NHTSA's Prior Efforts To Improve Tire Safety Standards

    In 2000, a surge in tire tread separation failures prompted 
Congress to enact the Transportation Recall Enhancement, 
Accountability, and Documentation Act (TREAD) Act.\4\ Section 10 of the 
TREAD Act, ``Endurance and resistance standards for tires'', required 
NHTSA to revise and update FMVSS No. 109--New Pneumatic Tires \5\ and 
FMVSS No. 119--New Pneumatic Tires for Vehicles Other than Passenger 
Cars.\6\ NHTSA made several improvements and established a new safety 
standard, FMVSS No. 139, New pneumatic radial tires for light 
vehicles.\7\ FMVSS No. 139 applies to new pneumatic radial tires for 
use on motor vehicles (other than motorcycle and low speed vehicles) 
that have a gross vehicle weight rating (GVWR) of 10,000 pounds or 
less.\8\ It adopted more stringent high speed and endurance tests as 
well as a new low-pressure performance test. The objective was to 
improve the ability of tires to endure the effects of tire heat 
building-up and severe under-inflation during highway travel under 
fully loaded conditions. In a petition for reconsideration to the final 
rule establishing FMVSS No. 139, manufacturers requested that NHTSA 
either redefine ``chunking'' or not consider ``chunking'' to be an 
indication of tire failure during the endurance test.\9\ The agency 
decided against eliminating ``chunking'' as a test failure 
condition.\10\
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    \4\ Public Law 106-414, November 1, 2000, 114 Stat. 1800.
    \5\ 49 CFR 571.109.
    \6\ 49 CFR 571.119.
    \7\ 68 FR 38115 (Jun. 26, 2003).
    \8\ 49 CFR 571.139.
    \9\ Chunking means the breaking away of pieces of the tread or 
sidewall. 49 CFR 571.139, S3.
    \10\ 71 FR 877 (Jan. 6, 2006).
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    As part of the improvements to the tire safety standards following 
the TREAD Act, NHTSA proposed to replace the strength test in FMVSS No. 
109 with a road hazard impact test, modeled after a Society of 
Automotive Engineers (SAE) recommended practice. The agency also 
proposed to replace the bead unseating test in FMVSS No. 109 with a new 
test used by Toyota.\11\ The construction characteristics of a radial 
tire, relative to a bias-ply tire, are what make the tests appear to be 
ineffective in differentiating among modern tires with respect to these 
aspects of performance. However, after further consideration and public 
comments, NHTSA deferred action on proposals to revise the existing 
strength test and bead unseating resistance test because additional 
research was needed to inform a decision.
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    \11\ 67 FR 10050 (Mar. 5, 2002).
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    Since then, both industry and NHTSA have examined the strength test 
and bead unseating test, by conducting additional research and updating 
relevant industry standards.\12\ \13\
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    \12\ Harris, J.R., Evans, L.R., & MacIsaac Jr., J.D. (July 
2013). Evaluation of laboratory tire tread and sidewall strength 
plunger test methods. (Report No. DOT-HS-811-797). Washington, DC: 
National Highway Traffic Safety Administration.
    \13\ Harris, J.R., Evans, L.R., & MacIsaac Jr., J.D. (April 
2013). Laboratory tire bead unseating: Evaluation of new equipment, 
pressures, and ``A'' dimension from ASTM F-2663-07as. (Report No. 
DOT-HS-811-735). Washington, DC: National Highway Traffic Safety 
Administration.
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b. Tire Trends

    FMVSS for tires were first established in 1967. At the time, the 
typical light-vehicle tire was a bias-ply tire, had a 78 to 85 percent 
aspect ratio,\14\ and was mounted on a wheel with a 14- to 15-inch 
diameter (rim codes 14 or 15).\15\ Bias tires have body ply cords that 
are laid at alternate angles, substantially less than 90 degrees to the 
tread centerline, extending from bead to bead. As the tire deflects, 
shear occurs

[[Page 69700]]

between body plies which generates heat.
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    \14\ Aspect ratio refers to a two-digit number that gives the 
tire's ratio of height to width.
    \15\ SAEJ918b_1966, Passenger Car Tire Performance Requirements 
and Test Procedures. Available at www.sae.org.
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    Currently, most tires sold in the United States are radial tires. 
In contrast to bias-ply tires, radial tires have body ply cords that 
are laid radially at 90 degrees to the centerline of the tread, 
extending from bead to bead. Because the opposite ends of each cord are 
anchored to the beads at points that are directly opposite to each 
other, the radial tire carcass is more flexible. The radial tire is 
reinforced and stabilized by a belt that runs circumferentially around 
the tire under the tread. This construction allows the sidewalls to act 
independently of the belt and tread area when forces are applied to the 
tire. This independent action is what allows the sidewalls to readily 
absorb road irregularities without overstressing the cords. Research 
has shown that impact breaks caused by cord rupture are less likely to 
occur in radial-ply passenger car tires.\16\ Radial body cords deflect 
more easily under load, generating less heat. Currently, passenger car 
tires have reached aspect ratios as low as 20, and rim codes as large 
as 32.
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    \16\ Harris, J.R. et al., supra note 12.
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    Changes in tire technology, including tire construction and rim 
diameter codes ratios, have prompted NHTSA to consider updating the 
existing requirements and test procedures in FMVSS for modern tires. 
This ANPRM seeks comment and supporting information about tire-related 
regulations or provisions within the regulations which may be a 
candidate for repeal, replacement, suspension or modification.

III. Considerations Regarding Federal Motor Vehicle Safety Standards 
for Tires

a. Tire Strength Test

    NHTSA introduced the tire strength test, also known as ``plunger 
energy,'' as part of FMVSS No. 109 in 1967.\17\ The test is used to 
evaluate the strength of tire materials. The tire is mounted on a test 
rim and inflated to the specified pressure. The tire is conditioned at 
room temperature for at least three hours and its pressure readjusted 
as specified. Then, a steel plunger with a rounded end is used to 
contact the tire at the tread centerline. The plunger is advanced into 
the tire, at a rate of 50 mm per minute until a certain force (energy 
level) is reached or the tire is punctured. The tire strength test 
specifies a minimum energy that must be attained without the tire 
breaking. However, if the plunger is stopped by reaching the rim prior 
to attaining the minimum breaking energy (bottoming out) without 
breaking the tire, the breaking energy of the tire is calculated using 
the force at the time the tire bottoms out. If the minimum breaking 
energy is not reached, the tire fails the test.
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    \17\ 32 FR 15792 (Nov. 16, 1967).
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    The performance requirements for tire strength are included in 
FMVSS No. 109 S4.2.2.4, FMVSS No. 117 S5.1.1(d), FMVSS No. 119 S7.3 and 
FMVSS No. 139 S6.5.1 and S6.5.2 for LT tires. FMVSS No. 109, New 
pneumatic tires and certain specialty tires, applies to bias-ply tires 
used on light vehicles and radial tires for use on passenger cars 
manufactured before 1975. FMVSS No. 117, Retreaded pneumatic tires, 
applies to retreaded tires for use on passenger cars manufactured after 
1948. FMVSS No. 119, applies to new pneumatic tires of motor vehicles 
with a GVWR of more than 4,536 kilograms and motorcycles. FMVSS No. 
139, New pneumatic radial tires for light vehicles, applies to new 
radial tires used on light vehicles manufactured after 1975.
    In a 2002 notice of proposed rulemaking, NHTSA reported that when 
conducting the strength test, the plunger often bottoms-out on the rim 
rather than breaking the reinforced materials in a radial tire. The 
issue seems to be more prevalent on radial tires with low aspect ratio 
(low-profile); these tires have less available section height for the 
plunger to travel to generate the required minimum breaking energy. The 
agency explained that radial tires have flexible sidewalls that absorb 
deflections and have high-strength belt packages. At the time, NHTSA 
proposed replacing the existing strength test with a new test modeled 
after SAE J1981, Road Hazard Impact for Wheel and Tire Assemblies.\18\ 
However, the agency deferred action on the proposal to revise the test 
because tests on 4 of the 20 tires subject to the SAE J1981 test 
resulted in the test device damaging the rim without air loss or damage 
to the tire.\19\ Public comments also questioned whether the proposed 
test was more stringent and correlated well with field performance.
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    \18\ 67 FR 10050 (Mar. 5, 2002). See also SAE J1981_200205, Road 
Hazard Impact for Wheel and Tire Assemblies (Passenger Car, Light 
Truck, and Multipurpose Vehicles). Available at www.sae.org.
    \19\ Harris, J.R. et al., supra note 12.
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    On July 12, 2011, USTMA submitted a petition for rulemaking 
requesting NHTSA update existing requirements related to tire strength 
testing.\20\ In its petition, USTMA stated that when testing radial 
passenger tires with low aspect ratios, the plunger strikes the inside 
of the wheel well before reaching the minimum force required to pass 
the existing tire strength test. NHTSA test procedure (TP-109) 
indicates that: ``If any plunger application contacts the test rim 
before the minimum specified breaking energy is reached, the tire shall 
be put on a different rim that has more clearance in the test area, and 
the test repeated.\21\ Tires are tested using any rim that is listed as 
appropriate for use with that tire according to the year books listed 
in the tire standards or by notification to NHTSA in accordance with 
FMVSS No. 139 S4.1 (or other similar provision for other tire 
standards).
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    \20\ Docket No. NHTSA-2011-0002-0005.
    \21\ https://www.nhtsa.gov/document/tp-109-09pdf.
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    In its petition, USTMA stated that, when using specially fabricated 
rims with deeper wells used solely for testing, the plunger may still 
bottom out on the rim; however, the tires would achieve the minimum 
strength requirement. USTMA included with its petition a table with 
strength test results for 20 tires tested using standard rims and 
specially fabricated deep well rims. The table includes data for tire 
rim codes 17 to 20, width 215 to 275, and aspect ratios 35 to 50. USTMA 
stated that there is a need to provide a more practical test procedure 
for low aspect ratio tires. To address its concerns, USTMA suggested 
that NHTSA adopt a test procedure for testing low-profile tires used in 
American Society for Testing and Materials (ASTM) F414-09, ``Standard 
Test Method for Energy Absorbed by a Tire When Deformed by Slow-Moving 
Plunger.'' When the plunger bottoms out on the rim without puncturing 
the tire, ASTM F414-09 specifies that the required minimum breaking 
energy is deemed to have been achieved.\22\ USTMA stated that this 
modification would eliminate the need to use deep-well rims for 
testing.
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    \22\ Current version, F414-15, also contains this provision.
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    In response to the October 2, 2017 notice, USTMA asked that the 
tire strength test in FMVSS Nos. 109, 119, and 139 be eliminated.\23\ 
Although USTMA acknowledged its petition for rulemaking requesting 
modification of the tire strength requirement, it stated that the 
complete elimination of the strength requirement would reduce the 
regulatory burden on manufacturers without impacting tire safety or 
performance. USTMA also stated that eliminating the strength 
requirement would eliminate costs to NHTSA associated with auditing for 
compliance.
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    \23\ Docket No. DOT-OST-2017-0069-2842.
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    NHTSA examined the laboratory tire tread and sidewall strength test

[[Page 69701]]

procedures.\24\ The study determined what percentage of tires tested to 
the applicable FMVSS No. 109 or FMVSS No. 119 experienced plunger 
bottom-out without reaching the minimum specified breaking energy. All 
12 tires tested reached the FMVSSs minimum breaking energy level before 
bottoming (67%) or rupturing (33%).\25\ NHTSA also evaluated ways to 
modify the FMVSS strength test to avoid plunger bottom-out. Nine 
passenger car tires were evaluated with the then-draft version of the 
ASTM F414-06. The ASTM F414-06 included a clause that if a bottom-out 
occurred, the tire could be considered as passing any standard; or the 
tire could continue to be retested at incremental higher inflation 
pressures until rupture or bottom-out occurred at the maximum allowable 
pressure. The six tires tested to ASTM F414-06 also reached the FMVSS 
minimum breaking energy before either bottoming-out (66.6%) or 
rupturing (16.6%). When increasingly higher inflation pressure was 
used, four of those six tires transition from bottoming-out to 
rupturing. Lastly, six passenger tire models were tested using an 
experimental sidewall bruise/strength test and generated statistically 
different levels of bruise width, penetration, and rupture force 
between 1-ply, 2-ply, and 3-ply sidewall tires. The results suggested 
that plunger penetration and breaking force were significantly 
influenced by the number of plies in the tire sidewall.
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    \24\ Harris, J.R. et al., supra note 12.
    \25\ Ibid.
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    NHTSA seeks comment on whether a change to or elimination of the 
tire strength test is appropriate. Based on the test results submitted 
by USTMA, some low-profile passenger car tires may not comply with the 
existing strength requirement. NHTSA currently does not have data to 
indicate a greater safety concern related to low-profile tires that may 
not meet the minimum strength requirement because they bottom out on 
the test rim prior to reaching the minimum strength requirement.
    NHTSA also requests comment about modifying the tire strength test 
to accommodate low-profile tires. NHTSA seeks comments on these 
amendments where the tire strength test could be modified. First, NHTSA 
could allow testing with specially manufactured deep-well test rims. 
These rims would be like those used by USTMA in its testing of low-
profile tires. The test results submitted by USTMA indicate that all 
tires they tested would meet the minimum tire strength requirement when 
tested with specially manufactured deep-well test rims. As the tire 
strength test procedure is currently written, tires are tested when 
mounted on rims meeting dimensional specifications set forth by tire 
manufacturers. These specifications may be submitted directly to NHTSA 
or those contained in publications of the following tire standards 
organizations including the Tire and Rim Association (TRA); the 
European Tyre and Rim Technical Organization (ETRTO); Japan Automobile 
Tire Manufacturers' Association, Inc. (JATMA); Tyre & Rim Association 
of Australia (TRAA); Associacao Latino Americana de Pneus e Aros 
(Brazil) (ALAPA); and South African Bureau of Standards (SABS). To test 
with specialized deep well rims, those rims would have to be specified 
by the tire manufacturer as suitable for use with the tire and either 
submitted to NHTSA or published by one of those standards 
organizations. NHTSA would then need to acquire those specialized rims 
to conduct its testing.
    Second, NHTSA requests comment on the need and feasibility to set a 
different minimum breaking energy requirement to apply to low-profile 
radial tires. It is possible that a performance value could be derived 
from knowledge of the impact forces exerted on a tire when driven over 
a road hazard. However, NHTSA currently has no data to consider. In 
addition, the issue of what tires would be considered ``low profile'' 
and subject to a different minimum breaking energy would have to be 
addressed.
    Third, NHTSA seeks comment on the idea of deeming tires that have 
bottomed out on the test rim to have met the minimum breaking energy 
requirement.\26\ This is consistent with USTMA's suggestion that NHTSA 
use the test procedure for testing low-profile tires used in ASTM F414-
09, ``Standard Test Method for Energy Absorbed by a Tire When Deformed 
by Slow-Moving Plunger.'' According to ASTM F414-09, when the plunger 
bottoms out on the rim without puncturing the tire, the required 
minimum breaking energy is deemed to have been achieved.
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    \26\ Ibid.
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    Fourth, NHTSA seeks comment on whether a new performance test for 
tire strength has been developed or whether a new test should be 
developed. Such a test could address the issue raised in the petition 
related to the testing of low-profile tires. Low-profile tires may be 
more prone to blowing out upon impact with a road hazard (i.e., 
pothole, curb) because the low sidewall height causes the sidewall to 
be pinched between the road hazard and the rim. In addition, low-
profile tires may be damaged when impacting a road hazard, resulting in 
a sidewall ``bubble'' that compromises the integrity of the tire. 
However, the existing tire strength requirement addresses the strength 
along the tread, not the sidewall. The testing of forces on the 
sidewall of the tire would likely require a dynamic road wheel impact 
test that is substantially different than the current quasi-static 
plunger test.\27\ NHTSA seeks comment about any safety concerns related 
to low-profile tires.
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    \27\ Harris, J.R. et al., supra note 12.
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    Finally, NHTSA seeks comment about the practical and safety 
implications of removing the tire strength test. The tire strength 
requirement was adopted at a time when most tires produced for the U.S. 
market were bias-ply tires. The purpose of the strength requirement is 
to ensure that there are no weak points along the tread of bias-ply 
tires. NHTSA seeks comment on the differences between the failure modes 
of radial-ply tires and bias-ply tires, specifically along the tread 
area, and whether the testing is necessary for radial tires. Data show 
nearly all passenger car tires sold in the U.S. today are radial 
tires.\28\ NHTSA also seeks comment about the scope of any elimination 
of, or amendments to, the tire strength requirement. For example, the 
performances test could be modified or eliminated for all tires, low-
profile tires, or all radial tires. The issue identified by USTMA is 
not applicable to tires other than low-profile radial passenger car 
tires. Finally, although few bias-ply tires are sold in the U.S., some 
bias-ply tires are still used. NHTSA seeks comment on how bias-ply 
tires are used in the marketplace in the U.S. and whether bias-ply 
tires will continue to be sold in the U.S.
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    \28\ Tire Industry Facts: US Tire Shipment Activity Report for 
Statistical Year 2018. (March 2019). Washington, DC: U.S. Tire 
Manufacturers Association.
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    To summarize, NHTSA seeks comment on the following:
    1. Can the tire strength test be repealed, replaced, or modified 
without negatively affecting safety? If not, what potential safety 
issues should the agency be focused on and how could such safety issues 
be mitigated? Explain your perspective, include specifics and data 
supporting your response.
    2. Repealing. What are the practical and safety implications of 
eliminating the tire strength test? Should the test be eliminated for 
all low-profile tires, all radial tires, or all tires without adversely 
affecting safety? What are the estimated cost savings of repealing this 
provisions within the standards?

[[Page 69702]]

    3. Modifying. What specific changes should the agency consider? 
What are the estimated cost savings of implementing such modifications? 
In addition, provide comments to the following possible modifications:
    a. Specify and allow use of deep-well test rims.
    b. Specify new minimum breaking energy (performance value) to apply 
to low-profile radial tires. How should NHTSA define the term ``low-
profile tires''?
    c. Are there any ambiguities in the term ``bottomed out'' and, if 
so, is there any suggestion on how to define the term?
    4. Replacing. What other test procedures(s) are available or can be 
developed to replace the strength test (currently used to evaluate the 
strength of tire materials)? Should a different procedure be used for 
low-profile tires? Please provide sufficient details about each 
procedure to permit the agency to analyze and determine whether the 
procedure is appropriate and feasible, and whether the procedure is 
objective and repeatable. What are the estimated costs of implementing 
such procedures?
    5. How many bias-ply tires are sold in the U.S. annually? Will 
manufacturers continue selling bias-ply tires for use on motor 
vehicles? Should NHTSA keep the strength test for bias-ply tires?

b. Tire Bead Unseating Resistance Test

    NHTSA introduced the tire bead unseating resistance test as part of 
FMVSS No. 109 in 1967.\29\ This test is used to evaluate the ability of 
the tire's bead to remain seated on the rim and retain tire inflation 
pressure when the tire is subjected to high lateral forces.\30\ The 
test consists of mounting the wheel and tire in a fixture and force a 
bead unseating block against the tire sidewall as specified. The load 
is applied through the block to the tire's outer sidewall at the 
distance specified. The force applied to the sidewall is increased 
until the bead region unseats with resulting air loss, or the specified 
minimum force value is achieved, whichever occurs first. The 
performance requirements for bead unseating resistance that applies to 
passenger car tires are included in FMVSS No.109 S5.2 and FMVSS No. 139 
S6.6.
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    \29\ 32 FR 15792 (Nov. 16, 1967).
    \30\ Bead means that part of the tire made of steel wires, 
wrapped or reinforced by ply cords, that is shaped to fit the rim.
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    The test forces used in the bead unseating resistance test are 
based on bias-ply tires. Because radial tires can satisfy the test 
easily,\31\ industry has suggested that NHTSA eliminate this 
requirement. In 2002, NHTSA proposed to replace the existing test with 
a new bead unseating test that was based on a procedure used by 
Toyota.\32\ The alternate test procedure uses forces more stringent 
than those in the current standard. However, NHTSA test data and public 
comments called into question whether the proposed test would 
adequately upgrade the existing standard. As a result, in the 
subsequent final rule, the agency decided to retain the FMVSS No.109 
bead unseating test for pneumatic tires, to extend that test to light 
truck tires, and to conduct additional research to inform a 
decision.\33\
---------------------------------------------------------------------------

    \31\ Harris, J.R. et al., supra note 13.
    \32\ 67 FR 10050 (Mar. 5, 2002).
    \33\ 68 FR 38115 (Jun. 26, 2003).
---------------------------------------------------------------------------

    In an August 12, 2008 letter to NHTSA, USTMA petitioned the agency 
to update the bead unseating resistance test in FMVSS No. 109. USTMA 
described two issues with the existing test procedure. First, Figure 1, 
Bead Unseating Fixture, does not have specifications necessary to test 
tires with rim diameter code greater than 20. Second, Figure 2 and 
Figure 2A, the diagrams of the bead unseat block, do not provide 
suitable geometries for use on low aspect ratio and larger diameter 
tires. USTMA asked that NHTSA revise the test fixtures (in Figure 1, 
Figure 2, and Figure 2A) or reference within the regulation, ASTM 
International F2663-07, paragraph 11.10 and annex A1 Fixtures and 
Settings.
    ASTM F2663, ``Standard Test Method for Bead Unseating of Tubeless 
Tires for Motor Vehicles with GVWR of 4536 kg (10,000 lb.) or Less'' 
was developed by the ASTM International F09 committee.\34\ The 
petitioner mentioned that the industry standard provides a solution to 
the two concerns identified because it includes a comprehensive set of 
test blocks that accommodate a wide range of tire sizes for bead 
unseating resistance testing and a formula to calculate the ``A'' 
dimension that is required to complete the test.
---------------------------------------------------------------------------

    \34\ ASTM F2663-07a, Standard Test Method for Bead Unseating of 
Tubeless Tires for Motor Vehicles with GVWR of 4536 kg (10 000 lb.) 
or Less, ASTM International, West Conshohocken, PA, 2007, 
www.astm.org.
---------------------------------------------------------------------------

    In April 2011, USTMA responded to a request for comments about 
existing DOT regulations.\35\ It suggested NHTSA remove the bead 
unseating test as a mandatory requirement for new pneumatic radial 
tires for light vehicles (as described in FMVSS No. 139). It mentioned 
that the test should be only applicable to tubeless bias-ply tires (in 
FMVSS No. 109). It expressed concerns that the bead unseat test is 
outdated, developed for bias-ply tires, and not effective in evaluating 
radial tires. USTMA cited differences in construction and force 
distribution between bias and radial tires as the reason it believes a 
bead unseat test for radial tires is of little value. USTMA suggested 
that, if NHTSA determines that it is critical to maintain the test, the 
agency consider test protocols like those found in ASTM International 
F2663-07a. It mentioned that using ASTM provisions would allow testing 
tires with rim diameter codes larger than 20 and with lower aspect 
ratios.
---------------------------------------------------------------------------

    \35\ Docket No. DOT-OST-2011-0025-0054.
---------------------------------------------------------------------------

    In a report issued in 2013, NHTSA described its work examining the 
feasibility of the equipment and test procedures in ASTM F2663-07a.\36\ 
The study evaluated block designs, the ``A'' dimension, and whether 
inflation pressures were appropriate for testing. A total of 14 
passenger vehicle tires and 4 light truck (load ranges D & E) tire 
models were included in the study. The tires had widths from 155 to 345 
mm, aspect ratios from 30 to 80, and rim codes from 12 to 28. Tires 
were selected to evaluate the limits of the test equipment including 
the physical dimensions and possible forces required to unseat the 
tire.
---------------------------------------------------------------------------

    \36\ Harris, J.R. et al., supra note 12.
---------------------------------------------------------------------------

    Although NHTSA did not find rim interference problems while testing 
these radial ply tires using the revised test blocks, the agency seeks 
comment on the testing of these tires. The study suggests that ASTM 
F2663-07a methods facilitated the conduct tests for passenger vehicles 
and light truck tires having a wide range of rim diameter codes and 
aspect ratios. The test blocks used allowed testing of different tire 
sizes with low aspect ratios since the block did not contact the rim 
before reaching the test force specified in the requirement. Two test 
pressures were used to evaluate the bead unseating performance of the 
tires tested. One test pressure was the inflation pressure, 180 kPa (26 
psi), specified for the bead unseating test in FMVSS No. 109. The other 
pressure used was 240 kPa (35 psi). Results at the test pressures 
indicated that the force required to unseat the tire's bead from the 
rim exceeded the minimum test force required in FMVSS No. 109.
    In June 2011, USTMA withdrew the petition after testing low-profile 
tires and indicated that additional study of the suggested test method 
was needed. It formed a task group to study and develop recommendations 
for ASTM and NHTSA to consider. The task group found that some sizes 
could not be tested according to ASTM F2663-07a

[[Page 69703]]

due to: (1) Interference between the block and the fixture or the block 
and the rim and (2) test block sliding across the tread instead of 
pushing on the sidewall when testing. The task group developed 
recommendations for the location of the block and revised which blocks 
is most appropriate to use on each size.

     Table 1--USTMA Comparison of FMVSS No. 109 Versus ASTM F2663-15
------------------------------------------------------------------------
            Provision                FMVSS No. 109       ASTM F2663-15
------------------------------------------------------------------------
Bead Unseated Block Type........  Specifies use of    Defines two new
                                   block:.             blocks (in
                                   Block 2A:   addition to 2A),
                                   Tire diameter       that are larger
                                   codes 10-16 in..    in radius and arc
                                                       to provide
                                                       consistent tire
                                                       contact for
                                                       diameters up to
                                                       30 in code:
                                                       Block 2A:
                                                       Tire diameter
                                                       codes 10-16 in.
                                                       Block 2B:
                                                       Tire diameter
                                                       codes 17-24 in.
                                                       Block 2C:
                                                       Tire diameter
                                                       codes 25-30 in.
Bead Unseated Block Position....  Specified a single  Specifies the
                                   block location      point of contact
                                   based on rim        to be 75% of the
                                   diameter.           tire section
                                  Fixed location       height.
                                   does not           Location based on
                                   accommodate         tire geometry and
                                   sufficiently low    treats each tire
                                   aspect ratio        in a consistent
                                   tires and results   manner.
                                   in inconsistent
                                   point of contact
                                   with the block on
                                   the tire sidewall.
------------------------------------------------------------------------

    These recommendations were presented to the ASTM F09 and included 
in F2663-15, published in 2015 to replace F2663-07a.\37\ In August 
2016, USTMA petitioned NHTSA to amend FMVSS No. 109 and FMVSS No. 139. 
It requested the agency to adopt the F2663-15 ASTM Bead Unseating 
Procedure.
---------------------------------------------------------------------------

    \37\ ASTM F2663-15, Standard Test Method for Bead Unseating of 
Tubeless Passenger and Light Truck Tires, ASTM International, West 
Conshohocken, PA, 2015, www.astm.org.
---------------------------------------------------------------------------

    USTMA requested NHTSA eliminate the bead unseating test in FMVSS 
Nos. 109 and 139 for radial tires, indicating that the test is outdated 
and does not provide a safety benefit for modern tires.\38\ It 
highlighted four reasons for this request. First, most of the tires in 
the market today are radial ply tires and the bead unseating test was 
designed in the 1960s to evaluate bias-ply tires.\39\ Second, tires 
today have much larger diameters (up to 25-inch diameters) and smaller 
aspect ratios (as small as 20) and the current regulation does not 
properly address the range of tire sizes in the market today.\40\ \41\ 
Third, the test cannot be performed as intended for some modern tires, 
and these tires designed to pass the test may have additional material 
at no benefit to the consumer--with an unintended consequence of 
increasing rolling resistance, which contributes to lower vehicle fuel 
economy. Lastly, it indicated that eliminating the bead unseated 
requirements would reduce test and materials cost for tire 
manufacturers and reduce costs to NHTSA to audit compliance. It 
mentioned that field performance of tires in countries with no bead 
unseating performance test requirements show no related performance 
issues with tires in service. No data was provided with this 
submission.
---------------------------------------------------------------------------

    \38\ https://www.regulations.gov/document?D=DOT-OST-2017-0069-2842.
    \39\ Bias-ply tire means a pneumatic tire in which the ply cords 
that extend to the beads are laid at alternate angles substantially 
less than 90 degrees to the centerline of the tread. Radial ply tire 
means a pneumatic tire in which the ply cords which extend to the 
beads are laid at substantially 90 degrees to the centerline of the 
tread.
    \40\ Harris, J.R. et al., supra note 12.
    \41\ Harris, J.R. et al., supra note 13.
---------------------------------------------------------------------------

    NHTSA seeks comment on whether change to or elimination of the tire 
bead unseating test is appropriate. NHTSA seeks data about low-profile 
tire testing with regards to the bead unseat test. NHTSA also requests 
comment about modifying the test to accommodate low-profile tires. 
NHTSA seeks comment on whether the bead unseating test can be modified 
using ASTM F2663 to extend the applicability of the test to low profile 
tires and tires with larger rim diameter codes. NHTSA is also seeking 
comment on whether a new test to examine tire bead unseating, in 
addition to the one described in this notice, has been developed or 
whether a new test can be developed. Such a test could address the 
issue raised in the petition related to the testing of low-profile 
tires. Lastly, NHTSA seeks comment about the practical and safety 
implications of removing the tire bead unseating test and about the 
scope of any elimination of this requirement.
    To summarize, NHTSA seeks comment on the following:
    6. Can the bead unseating resistance test be repealed, replaced, or 
modified without negatively affecting safety? If not, what potential 
safety issues should the agency be focused on and how could such safety 
issues be mitigated? Explain your perspective in detail and include any 
available data in support of your response.
    7. Repealing. What are the practical and safety implications of 
eliminating the tire bead unseating resistance test? Could the test be 
eliminated for all low-profile tires, all radial tires, all tires 
without adversely affecting safety? What are the estimated cost savings 
of repealing this provision within the standards?
    8. Modifying. What specific changes should the agency consider? 
What are the estimated cost savings of implementing such modifications? 
NHTSA seeks specific comment on the following modification:
    a. Adopt ASTM F2663, to apply FMVSS No. 109 procedure to tires with 
rim diameter code up to 30.\42\
---------------------------------------------------------------------------

    \42\ For example, using the information in Table A1.1--``Table 
of Recommended Blocks and Rim Sizes'' for `A' dimension data that 
include larger rim diameter codes and is organized to specify which 
test block to use for each `A' dimension value and its corresponding 
rim diameter code from 10 to 30; the formula to calculate an 
alternate `A' dimension value; and information about dimensional 
mechanical drawings for each test block for manufacturing.
---------------------------------------------------------------------------

    9. Replacing. What other test procedures are available or can be 
developed to replace the bead unseating resistance test? Should a 
different procedure be used for low-profile tires?
    Please provide sufficient details about each procedure to permit 
the agency to analyze and determine whether the procedure is 
appropriate and feasible, and whether the procedure is objective and 
repeatable. What are the estimated costs of implementing such 
procedures?

c. Tire Endurance Test: Failure Due to Chunking

    The endurance test requirements for passenger car tires are 
included in FMVSS No. 139. The test consists of mounting the tire on a 
test rim and inflate to the pressure specified for the tire. The 
assembly is conditioned and the pressure readjusted to the values 
specified. The assembly is then mounted in a test axle and pressed 
against the outer face of a smooth wheel. The test is conducted without 
interruptions at not less than 120 km/h and with the specified loads 
and test periods. The inflation pressure is not

[[Page 69704]]

corrected during the test and the test load is maintained at the value 
corresponding to each test period. After running the test for the time 
specified, the inflation pressure is measured and the tire is visually 
inspected.
    When tested in accordance to the specified test procedure, FMVSS 
No. 139, S6.3.2(a) specifies that there shall be no visual evidence of 
tread, sidewall, ply, cord, belt or bead separation; chunking; open 
splices; cracking or broken cords.\43\ The tire pressure after the test 
shall not be less than 95% of the initial pressure specified in 
S6.3.1.1.1.
---------------------------------------------------------------------------

    \43\ These damage conditions are defined in 49 CFR 571.139, S3.
---------------------------------------------------------------------------

    After the 2013 final rule establishing FMVSS No. 139, tire 
manufacturers requested that NHTSA either redefine tire chunking or not 
consider tire chunking to be an indication of tire failure during the 
endurance test. In response to petitions for reconsideration to that 
final rule, the agency decided against eliminating ``chunking'' as a 
test failure condition.\44\ The agency concluded that operating a 
vehicle with chunked tires may create concerns due to wheel imbalance 
and vehicle vibration. Further, the agency found that allowing tread 
chunking just short of exposing the reinforcement cords could create 
risk of tire failure. No data was provided to the agency demonstrating 
that some fixed percentage of a tire's tread could break away without 
detrimental effect on safe vehicle operation. NHTSA noted that 
international standards also include the presence of tire chunking as a 
damage condition.
---------------------------------------------------------------------------

    \44\ 71 FR 877 (Jan. 6, 2006).
---------------------------------------------------------------------------

    In response to the October 2, 2017 notice, USTMA stated that tread 
chunking is not a structural degradation of the tire, is not a safety 
related condition, and therefore should not be considered a damage 
condition used in regulatory compliance assessments. It views tire 
chunking as an endurance testing anomaly, indicating that chunking is 
also a result that lacks consistency due to variability in test 
conditions. USTMA did not provide data to support its assertion, to 
justify the expected benefits, or to evaluate the potential unintended 
consequences of removing this requirement. Such data would be helpful 
to inform potential regulatory action on this subject.
    NHTSA seeks comments on the following:
    10. NHTSA seeks data and information about the test conditions and 
performance requirements for the endurance test in FMVSS No. 139.
    11. What are the potential cost savings associated with the removal 
of chunking as a damage condition for the endurance test? Please 
describe the cost elements and provide supporting data for the 
estimates.
    12. Are there negative safety consequences of removing chunking as 
a relevant damage condition for the endurance test? Please explain.

d. Tire Markings for Ply Description, Ply Rating, Tubeless, and Radial

    FMVSS No. 139, S5.5 Tire markings, specifies that a tire must be 
marked on each sidewall with the following information: (a) The symbol 
DOT, which constitutes a certification that the tire conforms to the 
FMVSS; (b) the tire size designation as listed in the documents and 
publications specified in S4.1.1 of this standard; (c) the maximum 
permissible inflation pressure, subject to the limitations of S5.5.4 
through S5.5.6 of this standard; (d) the maximum load rating and for 
light truck (LT) tires, the letter designating the tire load range; (e) 
the generic name of each cord material used in the plies (both sidewall 
and tread area) of the tire; (f) the actual number of plies in the 
sidewall, and the actual number of plies in the tread area, if 
different; (g) the term ``tubeless'' or ``tube type,'' as applicable; 
(h) the word ``radial,'' if the tire is a radial ply tire; and (i) the 
alpine symbol, at the manufacturer's option if the tire meets the 
definition of a ``snow tire.''
    USTMA states that several marking regulations for tires are 
obsolete and should be eliminated. These include ply description and 
ply rating; `tubeless' marking, and `radial' marking.\45\ USTMA 
indicates that the number of plies no longer indicates a tire's 
robustness, customers do not purchase tires based on this information, 
and there is no safety impact associated with this information or 
errors to it. USTMA states that errors in marking can lead to a 
manufacturer filing a petition for inconsequential noncompliance, with 
associated administrative cost for both NHTSA and tire manufacturer. 
The agency has made determinations that some labeling errors constitute 
an inconsequential noncompliance.\46\
---------------------------------------------------------------------------

    \45\ 49 CFR.571.139, S5.5 (e), (f), (g), and (h).
    \46\ See, e.g., 76 FR 73007 (Nov. 28, 2011).
---------------------------------------------------------------------------

    NHTSA seeks comments on the following:
    13. Are there benefits to all required tire markings, specifically, 
ply description and ply rating; `tubeless' marking, and `radial' 
marking and seeks information on the impacts of these marking 
requirements on motor vehicle safety? If there are potential safety 
issues associated with the removal of any required markings, how could 
such safety issues be mitigated? Explain your perspective, include 
specifics and any data supporting your response.
    14. What are the potential cost savings associated with the removal 
of these markings (ply description and ply rating; `tubeless' marking, 
and `radial' marking)? Please provide any supporting data for the 
estimates.

e. Other Tire-Related Issues

    In response to a January 18, 2018, request for comments on 
automated driving systems (ADS),\47\ Bridgestone America asked that 
NHTSA consider new and emerging tire technologies to reduce tire 
failures on ADS-equipped vehicles.\48\ It asked that NHTSA consider how 
pneumatic tire alternatives can be permitted as compliance options for 
both ADS-equipped vehicles and conventional vehicles. Examples provided 
include extended mobility tires; run-flat tires; and non-pneumatic 
extended use tires. NHTSA seeks comment on how existing regulations can 
be revised to foster tire innovation without adversely affecting 
safety.
---------------------------------------------------------------------------

    \47\ 83 FR 2607.
    \48\ NHTSA-2018-0009.
---------------------------------------------------------------------------

    NHTSA has also received two petitions for rulemaking to update tire 
regulations and the agency is seeking comments in this ANPRM to support 
its response. First, in a December 3, 2010 petition,\49\ the Tire and 
Rim Association petitioned NHTSA to recognize 250 kPa and 290 kPa as 
allowable maximum inflation pressures for passenger car tires in FMVSS 
No. 139, and to provide a corresponding reference in FMVSS No. 138. TRA 
stated that these tire sizes have been recognized by the European Tyre 
and Rim Technical Organization and the Japanese Tyre Manufacturers 
Association and have been approved and published by ISO. TRA suggested 
that no adjustments to test criteria would be necessary, meaning that 
250 kPa tires would be subject to the test criteria for 240 kPa 
standard load tires and 290 kPa tires would be subject to the test 
criteria for 280 kPa extra load tires.\50\ Although this would result 
in

[[Page 69705]]

250 kPa and 290 kPa tires being subject to slightly more stringent 
standards than the 240 kPa and 280 kPa tires, higher tire pressure 
equates to higher load capacity. NHTSA seeks comment on whether to 
amend FMVSS No. 139 as requested by TRA (with a corresponding amendment 
to FMVSS No. 138).
---------------------------------------------------------------------------

    \49\ NHTSA-2019-0011.
    \50\ The December 3, 2010 petition states, that based on the 
actions of the ISO Working Group on passenger car tire loads, TRA, 
the European Tyre and Rim Technical Organization, and the Japanese 
Automobile Tyre Manufacturers Association have adopted new 
guidelines for load ratings for future size passenger car tires. 
These harmonize guidelines have also been approved by ISO and are 
published in ISO Standard 4000-1. The reference inflation pressure 
for standard load tires is 250 kPa and 290 kPa for extra load tires. 
This program has been reviewed and accepted by most of the vehicle 
manufacturers in United States, Europe and Japan. These proposed 
additions do not include any changes to the test inflation pressure 
criteria.
---------------------------------------------------------------------------

    In a July 14, 2014 petition,\51\ TRA requested that NHTSA revise 
the metric conversion for T-type spare tires. Currently, T-type spare 
tires have a maximum inflation pressure of 420 kPa (60 psi). Currently, 
the TRA year book recognizes both 415 kPa and 420 kPa as options for T-
type spare tires with the notation that NHTSA requires T-type spare 
tires to be marked with a maximum inflation pressure of 420 kPa. ETRTO 
and JATMA only specify a maximum inflation pressure of 420 kPa. No 
change was suggested to the 60 psi maximum inflation pressure. NHTSA 
requests comment on whether this change suggested by TRA is necessary 
and would not reduce safety.
---------------------------------------------------------------------------

    \51\ Docket No. NHTSA-2014-0009-0003.
---------------------------------------------------------------------------

    15. NHTSA seeks comments on the following: Please provide 
information about emerging tire technologies and trends that may impact 
motor vehicle safety.
    16. Do existing regulations impede tire innovation(s)? Please 
explain.
    17. What regulatory actions are needed to remove impediment(s) to 
tire innovation without adversely affecting safety?

IV. Public Participation

a. How can I influence NHTSA's thinking on this rulemaking?

    Your comments will help us improve this rulemaking. NHTSA invites 
you to provide different views on options NHTSA discusses, new 
approaches the agency has not considered, new data, descriptions of how 
this ANPRM may affect you, or other relevant information.
    NHTSA welcomes public review of on all aspects of this ANPRM, but 
request comments on specific issues throughout this document. NHTSA 
will consider the comments and information received in developing its 
eventual proposal for how to proceed with updating requirements for 
motor vehicles. Your comments will be most effective if you follow the 
suggestions below:
     Explain your views and reasoning as clearly as possible.
     Provide solid technical and cost data to support your 
views.
     If you estimate potential costs, explain how you arrived 
at the estimate.
     Tell NHTSA which parts of the ANPRM you support, as well 
as those with which you disagree.
     Provide specific examples to illustrate your concerns.
     Offer specific alternatives.
     Refer your comments to specific sections of the ANPRM, 
such as the units or page numbers of the preamble.

b. How do I prepare and submit comments?

    Your comments must be written and in English. To ensure that your 
comments are filed correctly in the Docket, please include the docket 
umber of this document located at the beginning of this notice in your 
comments.
    Your primary comments should not be more than 15 pages long.\52\ 
You may attach additional documents to your primary comments, such as 
supporting data or research. There is no limit on the length of the 
attachments.
---------------------------------------------------------------------------

    \52\ 49 CFR 553.21.
---------------------------------------------------------------------------

    Please submit one copy of your comments (two if submitting by mail 
or hand delivery), including the attachments, to the docket via one of 
the methods identified under the ADDRESSES section at the begging of 
this document. If you are submitting comments electronically as a PDF 
(Adobe) file, we ask that the documents submitted be scanned using an 
Optical Character Recognition (OCR) process, thus allowing NHTSA to 
search and copy certain portions of your submission.
    Please note that pursuant to the Data Quality Act, for substantive 
data to be relied upon and used by the agency, it must meet the 
information quality standards set forth in the OMB and DOT Data Quality 
Act guidelines. Accordingly, NHTSA encourages you to consult the 
guidelines in preparing your comments. DOT's guidelines may be accessed 
at www.transportation.gov/regulations/dot-information-dissemination-quality-guidelines.
    Privacy Act: Anyone can search the electronic form of all comments 
received into any of our dockets by the name of the individual 
submitting the comment (or signing the comment, if submitted on behalf 
of an association, business, labor union, etc.). You may review DOT's 
complete Privacy Act statement published in the Federal Register on 
April 11, 2000 (65 FR 19477-78) or you may visit http://www.transportation.gov/privacy.

c. How can I be sure that my comments were received?

    If you submit comments by hard copy and wish Docket Management to 
notify you upon its receipt of your comments, enclose a self-addressed, 
stamped postcard in the envelope containing your comments. Upon 
receiving your comments, Docket Management will return the postcard by 
mail. If you submit comments electronically, your comments should 
appear automatically in the docket number at the beginning of this 
notice on http://www.regulations.gov. If they do not appear within two 
weeks of posting, we suggest that you call the Docket Management 
Facility at 202-366-9826.

d. How do I submit confidential business information?

    If you wish to submit any information under a claim of 
confidentiality, you should submit three copies of your complete 
submission, including the information that you claim to be confidential 
business information, to the Chief Counsel, NHTSA, U.S. Department of 
Transportation, 1200 New Jersey Avenue SE, Washington, DC 20590. In 
addition, you should submit a copy from which you have deleted the 
claimed confidential business information to Docket Management, either 
in hard copy at the address given above under ADDRESSES, or 
electronically through regulations.gov. When you send a comment 
containing information claimed to be confidential business information, 
you should include a cover letter setting forth the information 
specified in 49 CFR part 512.

e. Will the agency consider late comments?

    NHTSA will consider all comments received to the docket before the 
close of business on the comment closing date indicated above under the 
DATES section. NHTSA will consider these additional comments to the 
extent possible, but we caution that we may not be able to fully 
address those comments prior to the agency's proposal.

f. How can I read the comments submitted by other people?

    You may read the comments received by Docket Management in hard 
copy at the address given above under the ADDRESSES section. The hours 
of the Docket Management office are indicated above in the same 
location. You may also read the comments on the internet by doing the 
following:
    (1) Go to http://www.regulations.gov.

[[Page 69706]]

    (2) Regulations.gov provides two basic methods of searching to 
retrieve dockets and docket materials that are available in the system:
    a. The search box on the home page which conducts a simple full-
text search of the website, into which you can type the docket number 
of this notice and
    b. ``Advanced Search,'' which is linked on the regulations.gov home 
page, and which displays various indexed fields such as the docket 
name, docket identification number, phase of the action, initiating 
office, date of issuance, document title, document identification 
number, type of document, Federal Register reference, CFR citation, 
etc. Each data field in the advanced search function may be searched 
independently or in combination with other fields, as desired. Each 
search yields a simultaneous display of all available information found 
in regulations.gov that is relevant to the requested subject or topic.
    (3) Once you locate the docket at http://www.regulations.gov, you 
can download the comments you wish to read. We note that since comments 
are often imaged documents rather than word processing documents (e.g., 
PDF rather than Microsoft Word), some comments may not be word-
searchable.
    Please note that, even after the comment closing date, NHTSA will 
continue to file relevant information in the Docket as it becomes 
available. Further, some people may submit late comments. Accordingly, 
NHTSA recommends that you periodically check the Docket for new 
material.

V. Rulemaking Notices and Analyses

a. Executive Orders 12866, 13563, and DOT Regulatory Policies and 
Procedures

    NHTSA has considered the impact of this ANPRM under Executive Order 
12866, Executive Order 13563, and DOT Order 2100.6, ``Policies and 
Procedures for Rulemakings.'' This rulemaking has been determined to be 
not ``significant'' under the Department of Transportation's regulatory 
policies and procedures and the policies of the Office of Management 
and Budget. Because NHTSA does not have sufficient information to 
formulate a proposal on all of the issues discussed in this notice, 
NHTSA cannot estimate the costs and benefits of this ANPRM. However, 
NHTSA requests comments on the costs and benefits of any of the 
regulatory actions suggested in this ANPRM or by any commenter.

b. Executive Order 13771 (Reducing Regulation and Controlling 
Regulatory Costs)

    This action is not subject to the requirements of E.O. 13771 (82 FR 
9339, February 3, 2017) because it is an advance notice of proposed 
rulemaking.

c. Regulatory Flexibility Act

    Pursuant to the Regulatory Flexibility Act, 5 U.S.C. 601 et seq., 
no analysis is required for an ANPRM. However, vehicle manufacturers 
and equipment manufacturers are encouraged to comment if they identify 
any aspects of the potential rulemaking that may apply to them.

d. Executive Order 13132 (Federalism)

    As an ANPRM, NHTSA does not believe that this document raises 
sufficient federalism implications to warrant the preparation of a 
federalism assessment. NHTSA believes that federalism issues would be 
more appropriately considered if and when the agency proposes changes 
to its tire regulations.

e. Executive Order 12988 (Civil Justice Reform)

    With respect to the review of the promulgation of a new regulation, 
section 3(b) of Executive Order 12988, ``Civil Justice Reform'' (61 FR 
4729, February 7, 1996) requires that Executive agencies make every 
reasonable effort to ensure that the regulation: (1) Clearly specifies 
the preemptive effect; (2) clearly specifies the effect on existing 
Federal law or regulation; (3) provides a clear legal standard for 
affected conduct, while promoting simplification and burden reduction; 
(4) clearly specifies the retroactive effect, if any; (5) adequately 
defines key terms; and (6) addresses other important issues affecting 
clarity and general draftsmanship under any guidelines issues by the 
Attorney General. This document is consistent with that requirement.

f. Paperwork Reduction Act

    Under the Paperwork Reduction Act of 1995 (PRA), a person is not 
required to respond to a collection of information by a Federal agency 
unless the collection displays a valid OMB control number. There are no 
information collection requirements associated with this ANPRM. Any 
information collection requirements and the associated burdens will be 
discussed in detail once a proposal has been issued.

g. National Technology Transfer and Advancement Act

    Section 12(d) of the National Technology Transfer and Advancement 
Act (NTTAA) requires NHTSA to evaluate and use existing voluntary 
consensus standards in its regulatory activities unless doing so would 
be inconsistent with applicable law (e.g., the statutory provisions 
regarding NHTSA's vehicle safety authority) or otherwise impractical. 
Voluntary consensus standards are technical standards (e.g., materials 
specifications, test methods, sampling procedures, and business 
practices) that are developed or adopted by voluntary consensus 
standards bodies, such as the Society of Automotive Engineers. The 
NTTAA directs us to provide Congress (through OMB) with explanations 
when we decide not to use available and applicable voluntary consensus 
standards. As NHTSA has not yet developed specific regulatory 
requirements, the NTTAA does not apply for purposes of this ANPRM.

h. Unfunded Mandates Reform Act

    The Unfunded Mandates Reform Act of 1995 requires agencies to 
prepare a written assessment of the costs, benefits, and other effects 
of proposed or final rules that include a Federal mandate likely to 
result in the expenditure of State, local, or tribal governments, in 
the aggregate, or by the private sector, of more than $100 million 
annually (adjusted for inflation with base year of 1995). NHTSA has 
determined that this ANPRM would not result in expenditures by State, 
local, or tribal governments, in the aggregate, or by the private 
sector, in excess of $100 million annually.

i. National Environmental Policy Act

    NHTSA has analyzed this rulemaking action for the purposes of the 
National Environmental Policy Act. The agency has preliminarily 
determined that implementation of this rulemaking action would not have 
any significant impact on the quality of the human environment.

j. Plain Language

    The Plain Language Writing Act of 2010 (Pub. L. 111-274) requires 
that federal agencies write documents in a clear, concise, and well-
organized manner. While the Act does not cover regulations, Executive 
Orders 12866 and 13563 require each agency to write all notices in 
plain language that is simple and easy to understand. Application of 
the principles of plain language includes consideration of the 
following questions:

[[Page 69707]]

     Have we organized the material to suit the public's needs?
     Are the requirements in the notice clearly stated?
     Does the notice contain technical language or jargon that 
is not clear?
     Would a different format (grouping and order of sections, 
use of headings, paragraphing) make the rule easier to understand?
     Would more (but shorter) sections be better?
     Could we improve clarity by adding tables, lists, or 
diagrams?
    If you have any responses to these questions, please include them 
in your comments on this proposal.

k. Regulatory Identifier Number (RIN)

    The Department of Transportation assigns a regulation identifier 
number (RIN) to each regulatory action listed in the Unified Agenda of 
Federal Regulations. The Regulatory Information Service Center 
publishes the Unified Agenda in April and October of each year. You may 
use the RIN contained in the heading at the beginning of this document 
to find this action in the Unified Agenda.

    Issued in Washington, DC, under authority delegated in 49 CFR 
part 1.95 and 501.5.
James Clayton Owens,
Acting Administrator.
[FR Doc. 2019-27209 Filed 12-18-19; 8:45 am]
 BILLING CODE 4910-59-P