Skip to content
Politically.com Search all
Menu

FederalRegister.gov regulatory documents

Rules and proposed rules

Filter the reviewed cache from January 1, 2025 forward by document type, structured agency, publication date, and source-supplied open comment deadline.

Structured source fields

Find a regulatory document

Clear filters
Source: FederalRegister.govRecently refreshed. Last successful refresh: 2026-07-31 22:49:02 UTC.

Bounded local results

69 documents shown

Agency filters use only structured provider relationships.

2026-15482Final rule

Temporary Exemption From Motor Vehicle Safety and Bumper Standards

This interim final rule amends NHTSA's general exemption regulations to remove language limiting the application of temporary exemptions from the Federal Motor Vehicle Safety Standards (FMVSS) and the bumper standard to motor vehicles manufactured on and after the effective date of an exemption, and to align the regulations with the Administrator's statutory discretion to determine the vehicle population covered by a temporary exemption. It also removes the requirement that applications for exemption be submitted in three copies and specifies an electronic means for submission. Though these amendments are effective immediately, to benefit from comments interested parties and the public may have, NHTSA requests that any comments be submitted to the docket for this rule. Following the close of the comment period, NHTSA will publish a final rule responding to any comments received and making any appropriate changes to the interim final rule.

Comments close Aug 31, 2026

2026-15231Proposed rule

Federal Motor Vehicle Safety Standards; Modernization of FMVSS No. 135 To Accommodate ADS-Equipped Vehicles; Extension of Comment Period

In response to a request from Varnum LLP (Varnum), NHTSA is announcing a 30-day extension of the public comment period for the notice of proposed rulemaking (NPRM) published on June 26, 2026 proposing to amend Federal Motor Vehicle Safety Standard (FMVSS) No. 135, "Light vehicle brake systems." The proposed modifications would distinguish how regulations apply to vehicles with and without manually operated driving controls. The comment period for the NPRM was originally scheduled to end on July 27, 2026. It will now end on August 26, 2026.

Comments close Aug 26, 2026

2026-12981Proposed rule

Federal Motor Vehicle Safety Standards; Modernization of FMVSS No. 135 To Accommodate ADS-Equipped Vehicles

NHTSA is proposing to amend Federal Motor Vehicle Safety Standard (FMVSS) No. 135, "Light vehicle brake systems." The proposed modifications would distinguish how regulations apply to vehicles with and without manually operated driving controls. The proposed modifications would clarify definitions, telltale requirements, performance requirements, and test procedures in the standard and remove sections that are no longer relevant. The stopping distance performance requirements, which address the primary safety purpose of the standard, would still apply to all subject vehicles. This rulemaking would remove unnecessary regulatory burdens and costs without detriment to vehicle safety.

Comments close Jul 27, 2026

2026-12912Proposed rule

Response to Petition for Reconsideration, Federal Motor Vehicle Safety Standards; Seat Belt Assembly Anchorages

NHTSA published a final rule on September 17, 2024 that amended the regulation on seat belt assembly anchorages. The final rule updated the test procedure for existing test devices and added an alternative test device as a compliance option. In response to the 2024 final rule, the agency received a petition for reconsideration from the Truck and Engine Manufacturers Association. After considering the petition, NHTSA is proposing to delay the compliance date from September 1, 2027 to September 1, 2030 for vehicles with a Gross Vehicle Weight Rating (GVWR) of greater than 4,536 kg.

Comments close Jul 27, 2026

2026-06614Final rule

Federal Motor Vehicle Safety Standards; Occupant Crash Protection, Seat Belt Reminder Systems

This interim final rule amends the seat belt warning requirements in Federal Motor Vehicle Safety Standard (FMVSS) No. 208, "Occupant crash protection" in response to petitions for reconsideration of the January 2025 final rule. This interim final rule delays the compliance dates and makes technical clarifications to the regulatory text. NHTSA denies the remainder of the requests. Though these amendments are effective immediately, to benefit from comments interested parties and the public may have, NHTSA requests that any comments be submitted to the docket for this rule. Following the close of the comment period, NHTSA will publish a final rule responding to any comments received and making any appropriate changes to the interim final rule.

Comments close May 21, 2026

2026-06254Proposed rule

Federal Motor Vehicle Safety Standards; Modernization of FMVSS No. 110 To Accommodate ADS-Equipped Vehicles

NHTSA is proposing to amend Federal Motor Vehicle Safety Standard (FMVSS) No. 110, "Tire selection and rims and motor home/ recreation vehicle trailer load carrying capacity information for motor vehicles with a GVWR of 4,536 kilograms (10,000 pounds) or less." The proposed modification would amend a single section of the standard to enable compliance by affixing the required placard on the left side of the vehicle when there is not a "driver's side" for vehicles equipped with Automated Driving Systems (ADS) that do not have manually operated driving controls. This rulemaking would allow flexibility in complying with the standard without detriment to vehicle safety. This action is part of a larger NHTSA effort to address vehicle automation in the agency's regulations.

Comments close May 1, 2026

2026-05024Proposed rule

Federal Motor Vehicle Safety Standards; Modernization of FMVSS No. 102 To Accommodate ADS-Equipped Vehicles

NHTSA is proposing to amend Federal Motor Vehicle Safety Standard (FMVSS) No. 102, "Transmission shift position sequence, starter interlock, and transmission braking effect." The proposed modification would except vehicles equipped with Automated Driving Systems (ADS) that do not have manually operated driving controls from the requirement for a transmission shift position display. This rulemaking would remove unnecessary regulatory burdens and costs associated with a display designed to aid a person driving the vehicle. As the transmission shift position display does not fulfill the same safety need in an ADS-equipped vehicle without manually operated driving controls, the amendment will not impact vehicle safety. This action is part of a larger NHTSA effort to address vehicle automation in the agency's regulations.

Comments close Apr 15, 2026

2026-05023Proposed rule

Federal Motor Vehicle Safety Standards; Modernization of FMVSS No. 103 and FMVSS No. 104 To Accommodate ADS-Equipped Vehicles; Incorporation by Reference

NHTSA is proposing to amend Federal Motor Vehicle Safety Standards (FMVSS) No. 103, "Windshield defrosting and defogging systems," and FMVSS No. 104, "Windshield wiping and washing systems." The proposed modifications would except vehicles equipped with Automated Driving Systems (ADS) that do not have manually operated driving controls from these standards. This rulemaking would remove unnecessary regulatory burdens and costs associated with systems intended to provide visibility for a person driving the vehicle. As these systems do not fulfill the same safety need on an ADS-equipped vehicle without manually operated driving controls, the proposed changes are not expected to have adverse safety effects. Manufacturers may still provide these systems if they choose to do so. These actions are part of a larger NHTSA effort to address vehicle automation in the agency's regulations. This proposal would also harmonize FMVSS Nos. 103 and 104 with current industry standards through incorporations by reference.

Comments close Apr 15, 2026

2026-00537Proposed rule

The Safer Affordable Fuel-Efficient (SAFE) Vehicles Rule III for Model Years 2022 to 2031 Passenger Cars and Light Trucks

NHTSA is announcing a 15-day extension of the comment period for the proposed rule entitled The Safer Affordable Fuel-Efficient (SAFE) Vehicles Rule III for Model Years 2022 to 2031 Passenger Cars and Light Trucks, published in the December 5, 2025 issue of the Federal Register. NHTSA is also extending the comment period for the Draft Supplemental Environmental Impact Statement (Draft SEIS) that accompanies the proposed rule. The comment period was to end on January 20, 2026 (45 days after publication of the proposed rule in the Federal Register). This document extends the comment period to February 4 to allow the public additional time to comment on the proposed rule. NHTSA is denying requests for additional public hearings based on the number of testifiers that signed up to testify for NHTSA's virtual public hearing, which was announced via Federal Register notice on December 12, 2025 and held on January 7, 2026.

Comments close Dec 5, 2025

2025-22014Proposed rule

The Safer Affordable Fuel-Efficient (SAFE) Vehicles Rule III for Model Years 2022 to 2031 Passenger Cars and Light Trucks

NHTSA, on behalf of the Department of Transportation (DOT), proposes to substantially recalibrate the Corporate Average Fuel Economy (CAFE) program to realign this program with Congressional intent. That recalibration includes proposing to amend DOT's fuel economy standards for light-duty vehicles for model years (MYs) 2022- 2026 and MYs 2027-2031. Consistent with statutory requirements, the fuel economy standards proposed in this rule are founded on light-duty vehicles powered by gasoline and diesel fuels, a category that includes non-plug-in hybrid vehicles. In formulating the proposed standards, NHTSA has not considered, consistent with law, the imputed fuel-economy performance of battery-powered electric vehicles (EVs) or the electric operation of vehicles that use plug-in hybrid electric powertrains, nor compliance credits or adjustments to the two-cycle fuel economy test procedures to account for air conditioning and off-cycle technologies. NHTSA also is proposing to eliminate the inter-manufacturer credit trading system and to amend the light-duty vehicle fleet classification system to allocate vehicles into passenger and non-passenger automobile fleets appropriately, based on their attributes and capabilities, starting in MY 2028. Elimination of unlawful considerations, combined with several of the proposed changes, would significantly improve the capabilities of manufacturers to meet fuel economy standards, better align the program with Congressional intent, and reduce manufacturer incentives to design vehicles and add features that are not desired by American consumers and that have questionable real-world fuel economy benefits. NHTSA is therefore proposing to set fuel economy standards that increase from newly proposed MY 2022 standards at a rate of 0.5 percent per year through MY 2026, followed by 0.25 percent per year through MY 2031, with MY 2027 stringency established as a bridge between the two sets of standards. The reduced stringency increases in later years, coupled with a reevaluation of the coefficients that define the functions governing fuel economy standards, are intended to establish maximum feasible standards in a manner that gains real-world fuel-economy-benefits, while enabling the industry to adapt to the proposed substantial recalibration of the CAFE program. NHTSA projects that the amended standards would correspond to the industry fleetwide average for all light-duty vehicles of roughly 34.5 miles per gallon (mpg) in MY 2031.

Comments close Jan 20, 2026

2025-21506Proposed rule

Event Data Recorders

NHTSA published a final rule on December 18, 2024, in response to a mandate of the Fixing America's Surface Transportation Act (FAST Act) to establish the appropriate recording period in NHTSA's Event Data Recorder (EDR) regulation (49 CFR part 563). The final rule amended the pre-crash data capture requirements of EDRs by increasing the recording duration and sample rate from 5 seconds at 2 Hz to 20 seconds at 10 Hz. The agency received three petitions for reconsideration from the Alliance of Automotive Innovation, the EDR Committee of SAE International, and FCA US LLC (a subsidiary of Stellantis N.V.) in response to the final rule. NHTSA is proposing to delay the compliance date from September 1, 2027, to September 1, 2028, and implement a phase-in period for EDRs to meet the new requirements.

Comments close Dec 29, 2025

2025-12363Final rule

Recission of NHTSA's 1975 Procedures for Considering Environmental Impacts

This interim final rule rescinds the National Highway Traffic Safety Administration's (NHTSA) 1975 Procedures for Considering Environmental Impacts from the Code of Federal Regulations because they are outdated, because they were promulgated on the basis of authorities that have been rescinded, and because the Department of Transportation has promulgated updated Department-wide National Environmental Policy Act (NEPA) procedures that will guide NHTSA's NEPA process.

Comments close Aug 4, 2025

2025-09750Proposed rule

Federal Motor Vehicle Safety Standard No. 213a; Child Restraint Systems-Side Impact Protection; Federal Motor Vehicle Safety Standard No. 213; Child Restraint Systems, Federal Motor Vehicle Safety Standard No. 213b; Child Restraint Systems

This document proposes amendments to the safety standards for child restraint systems (CRSs). NHTSA is proposing to amend FMVSS No. 213a, "Child restraint systems--side impact protection," to exempt school bus CRSs from the standard's requirements as long as they meet specified labeling requirements; to delay the compliance date from June 30, 2025 to December 5, 2026; to provide that the Child Restraint Air Bag Interaction twelve-month-old (CRABI-12MO) test dummy will not be used to test forward-facing CRSs; and to amend the positioning procedures for that dummy. The first two of these amendments are in response to petitions from CRS manufacturers. NHTSA is also proposing to amend FMVSS No. 213, "Child restraint systems" and FMVSS No. 213b, "Child restraint systems; Mandatory applicability beginning December 5, 2026," to exclude school bus CRSs from the requirements to provide attachments for connection to the vehicle's child restraint anchorage system and to change certain labeling requirements to reflect how school bus child restraints are used.

Comments close Jun 30, 2025

2025-09739Proposed rule

Federal Motor Vehicle Safety Standards No. 205, Glazing Materials; No. 205(a), Glazing Equipment Manufactured Before September 1, 2006, and Glazing Materials Used in Vehicles Manufactured Before November 1, 2006

NHTSA is proposing to remove the obsolete Federal Motor Vehicle Safety Standard (FMVSS) No. 205(a), Glazing equipment manufactured before September 1, 2006, and glazing materials used in vehicles manufactured before November 1, 2006.

Comments close Jul 29, 2025

2024-30854Proposed rule

ADS-Equipped Vehicle Safety, Transparency, and Evaluation Program

This document proposes a voluntary framework for the evaluation and oversight of motor vehicles equipped with automated driving systems (ADS). The ADS-equipped Vehicle Safety, Transparency, and Evaluation Program (AV STEP) would establish a national program for ADS-equipped vehicles that operate or may operate on public roads in the United States under NHTSA's oversight with the goal of improving public transparency related to the safety of certain ADS-equipped vehicles, while allowing for responsible development of this technology. This proposal includes procedures for application, participation, public reporting, and program administration. It identifies content requirements for applications, including independent assessments of ADS safety processes, such as the safety cases used and conformance to industry standards. These application requirements will inform NHTSA's decisions on terms and conditions for participation. The proposal also contains reporting requirements for participants, including periodic and event-triggered reporting.

Comments close Mar 17, 2025

2024-31011Proposed rule

Updated Means of Providing Recall Notification

In accordance with the Moving Ahead for Progress in the 21st Century Act (MAP-21) and the Fixing America's Surface Transportation Act (FAST Act), NHTSA is proposing to amend the means of required recall notification to include notification by electronic means, in addition to first-class mail, and proposing certain other attendant obligations related to this requirement. NHTSA is also proposing to revise certain language that is currently required for recall notifications, as well as to update certain language in the regulation and the office designation for NHTSA's Recall Management Division and NHTSA's web address.

Comments close Mar 11, 2025

2026-12980Proposed rule

ADS-Equipped Vehicle Safety, Transparency, and Evaluation Program; Withdrawal

This action withdraws the notice of proposed rulemaking (NPRM) published in the Federal Register on January 15, 2025, which proposed to establish the Automated Driving System-Equipped Vehicle Safety, Transparency, and Evaluation Program (AV STEP). The proposal would have created a voluntary program for vehicle manufacturers, developers of Automated Driving Systems (ADS), and fleet operators or system integrators of such vehicles. Based on its reevaluation of the proposal, consideration of the comments received, and subsequent progress on other ADS initiatives, NHTSA is withdrawing the rulemaking.

2026-11640Final rule

Federal Motor Vehicle Safety Standards No. 210; Seat Belt Assembly Anchorages; Correction

The National Highway Traffic Safety Administration (NHTSA) is correcting a final rule that appeared in the Federal Register on June 3, 2026. The original document issued a final rule removing unnecessary regulatory text from Federal Motor Vehicle Safety Standard (FMVSS) No. 210, Seat belt assembly anchorages. This document corrects an amendatory instruction to ensure that only the introductory text of paragraph S6 is revised, preserving the remaining subordinate text and graphics within that section.

2026-11082Final rule

Federal Motor Vehicle Safety Standards No. 205; Glazing Materials; No. 205(a), Glazing Equipment Manufactured Before September 1, 2006, and Glazing Materials Used in Vehicles Manufactured Before November 1, 2006

On May 30, 2025, NHTSA published a notice of proposed rulemaking (NPRM) proposing to remove the obsolete Federal Motor Vehicle Safety Standard (FMVSS) No. 205(a), Glazing equipment manufactured before September 1, 2006, and glazing materials used in vehicles manufactured before November 1, 2006. The agency received no comment on the proposed removal of FMVSS No. 205(a) and therefore the agency is adopting the changes in this final rule.

2026-11081Final rule

Federal Motor Vehicle Safety Standards No. 210; Seat Belt Assembly Anchorages

On May 30, 2025, NHTSA published a notice of proposed rulemaking (NPRM) proposing to remove unnecessary regulatory text from Federal Motor Vehicle Safety Standard (FMVSS) No. 210, Seat belt assembly anchorages. The agency received no comment on the proposed changes to FMVSS No. 210, and therefore the agency is adopting the changes in this final rule.

2026-11080Final rule

Federal Motor Vehicle Safety Standards No. 204; Steering Control Rearward Displacement

On May 30, 2025, NHTSA published a notice of proposed rulemaking (NPRM) proposing to amend Federal Motor Vehicle Safety Standard No. 204, Steering Control Rearward Displacement, so that it no longer applies to vehicles certified to the frontal barrier crash protection requirements of Federal Motor Vehicle Safety Standard No. 208, Occupant Crash Protection. The agency received one comment that supported the proposed changes to FMVSS No. 204. In addition, the commenter suggested additional amendments to remove obsolete regulatory text. NHTSA is adopting the proposed changes and the additional amendments suggested by the commenter.

2026-11078Final rule

Federal Motor Vehicle Safety Standards No. 207; Seating Systems

On May 30, 2025, NHTSA published a notice of proposed rulemaking (NPRM) proposing to remove obsolete requirements from Federal Motor Vehicle Safety Standards (FMVSS) No. 207, Seating Systems. The agency received no comment on the proposed changes to FMVSS No. 207, and therefore the agency is adopting the changes in this final rule.

2026-11077Final rule

Federal Motor Vehicle Safety Standards No. 301; Fuel System Integrity

On May 30, 2025, NHTSA published a notice of proposed rulemaking (NPRM) proposing to remove obsolete requirements from Federal Motor Vehicle Safety Standard (FMVSS) No. 301, "Fuel System Integrity." The agency received three comments on the proposed changes to FMVSS No. 301. The agency is adopting a revised version of the proposed changes in this final rule based on the comments received.

2026-11072Final rule

Federal Motor Vehicle Safety Standard No. 214; Side Impact Protection; Federal Motor Vehicle Safety Standard No. 305a; Electric-Powered Vehicles: Electric Powertrain Integrity; Federal Motor Vehicle Safety Standard No. 307; Fuel System Integrity of Hydrogen Vehicles

On May 30, 2025, NHTSA published a notice of proposed rulemaking (NPRM) proposing to remove obsolete requirements from Federal Motor Vehicle Safety Standard (FMVSS) No. 214, "Side Impact Protection." The agency received two comments that supported the changes to FMVSS No. 214. In addition, one of the commenters suggested amendments to remove additional obsolete regulatory text. NHTSA is adopting the proposed changes with amendments made in response to the comments. The final rule also amends FMVSS No. 305a, "Electric-Powered Vehicles: Electric Powertrain Integrity" and FMVSS No. 307, "Fuel System Integrity of Hydrogen Vehicles" to delete reference to sections of FMVSS No. 214 removed by this final rule.

2026-11071Final rule

Removing Obsolete Directives From Phase-In Reporting Requirements

On May 30, 2025, NHTSA published a notice of proposed rulemaking (NPRM) proposing to remove obsolete directives from the phase-in reporting requirements. The agency received no comment on the proposed changes to the phase-in reporting requirements, and therefore the agency is adopting the changes in this final rule. NHTSA is also updating some sections of Part 585 with the agency's current address.

2026-11068Final rule

Federal Motor Vehicle Safety Standards No. 216; Roof Crush Resistance, Federal Motor Vehicle Safety Standard No. 216a; Roof Crush Resistance; Upgraded Standard

On May 30, 2025, NHTSA published a notice of proposed rulemaking (NPRM) to remove the obsolete Federal Motor Vehicle Safety Standard (FMVSS) No. 216, related to roof crush resistance. The agency received one comment, but the comment is not within the scope of the proposed rule. Therefore, the agency is removing the obsolete FMVSS No. 216 as proposed.

2026-09849Final rule

Event Data Recorders

This final rule amends NHTSA's regulation governing Event Data Recorders (EDR or EDRs) to delay the implementation schedule for expanded pre-crash data capture requirements. In response to petitions for reconsideration of a final rule published on December 18, 2024, the agency is adopting a four-year phase-in compliance schedule that begins September 1, 2028. This action ensures the increased pre-crash data capture requirements are integrated into the vehicle fleet in a manner that aligns with manufacturer production cycles and technical feasibility.

2026-08144Final rule

Administrative Rulemaking, Guidance, and Enforcement Procedures

This final rule reinstates and expounds upon procedural reforms for the Department's rulemakings, guidance documents, and enforcement actions rescinded by a final rule published by the Department on April 2, 2021, "Administrative Rulemaking, Guidance, and Enforcement Procedures." Accordingly, this final rule revises and updates the Department's internal policies and procedures relating to the issuance of rulemaking documents. In addition, this final rule updates the Department's procedural requirements governing the review and clearance of guidance documents, and the initiation and conduct of enforcement actions, including administrative enforcement proceedings and judicial enforcement actions brought in Federal court.

2026-00728Final rule

Federal Motor Vehicle Safety Standards: Anti-Ejection Glazing for Bus Portals; Mandatory Applicability Beginning October 30, 2027

This document partially grants a petition for reconsideration of the October 30, 2024 final rule that established Federal Motor Vehicle Safety Standard (FMVSS) No. 217a, "Anti-ejection glazing for bus portals; Mandatory applicability beginning October 30, 2027." The standard intends to drive installation of advanced glazing in over-the- road buses (motorcoaches) and other large buses to reduce occupant ejections. This final rule revises the minimum size requirement for applicable portals, adds a figure to illustrate a daylight opening periphery, and clarifies the target location for edge impact tests. This document denies all other portions of the petition for reconsideration, including revising the definition of "daylight opening."

2025-22674Proposed rule

Public Hearing for Corporate Average Fuel Economy Standards: The Safer Affordable Fuel-Efficient (SAFE) Vehicle Rule III for Model Years 2022 to 2031 Passenger Cars and Light Trucks

The National Highway Traffic Safety Administration (NHTSA) is announcing a virtual public hearing to be held January 7, 2026 on its proposal for the "The Safer Affordable Fuel-Efficient (SAFE) Vehicle Rule III for Model Years 2022 to 2031 Passenger Cars and Light Trucks," which was signed on December 2, 2025. This hearing also allows the public to provide oral comments regarding the Draft Supplemental Environmental Impact Statement (Draft SEIS) that accompanies the proposal. An additional virtual session will be held on January 8, 2026, if necessary, to accommodate the number of people that sign up to speak.

2025-13928Proposed rule

Federal Motor Vehicle Safety Standards; Federal Motor Carrier Safety Regulations; Parts and Accessories Necessary for Safe Operation; Speed Limiting Devices; Withdrawal

FMCSA and NHTSA withdraw the September 7, 2016 joint NPRM that proposed to require that heavy vehicles (those with a gross vehicle weight rating (GVWR) of more than 11,793 kilograms (26,000 pounds)) be equipped with a speed limiting device that is maintained at a set speed. FMCSA also withdraws its May 4, 2022 ANSPRM, which announced FMCSA's intent to proceed with a speed limiter rulemaking. The ANSPRM stated that FMCSA was preparing a supplemental notice of proposed rulemaking (SNPRM) to propose that motor carriers operating commercial motor vehicles (CMVs) in interstate commerce with a gross vehicle weight or GVWR of at least 11,794 kilograms (26,001 pounds), whichever is greater, and that are equipped with an engine control unit (ECU) capable of governing the maximum speed, be required to limit the CMV to a speed to be determined by the rulemaking and to maintain that ECU setting for the service life of the vehicle. In light of significant policy and safety concerns and continued data gaps that create considerable uncertainty about the estimated costs, benefits, and other impacts of the proposed rule, FMCSA and NHTSA have decided to withdraw the proposal.

2025-12311Final rule

Federal Motor Vehicle Safety Standard No. 213a; Child Restraint Systems-Side Impact Protection; Federal Motor Vehicle Safety Standard No. 213; Child Restraint Systems, Federal Motor Vehicle Safety Standard No. 213b; Child Restraint Systems

This notice announces that NHTSA will not take enforcement action against regulated entities for failing to comply with Federal Motor Vehicle Safety Standard (FMVSS) No. 213a, Child restraint systems--side impact protection until the publication of any final rule finalizing NHTSA's May 30, 2025 proposal.

2025-10586Final rule

Resetting the Corporate Average Fuel Economy Program

The National Highway Traffic Safety Administration is issuing this interpretive rule to set forth the agency's interpretation of the factors the agency is prohibited by law from considering when setting maximum feasible fuel economy standards under the Energy Policy and Conservation Act of 1975, the Energy Independence and Security Act of 2007, and other applicable law. This rule describes NHTSA's interpretation of its authority to establish the necessary legal foundation for bringing the Corporate Average Fuel Economy (CAFE) program into compliance with relevant statutory requirements. The rule also describes NHTSA's interpretation of its authority for a commercial medium- and heavy-duty (MDHD) on-highway vehicle and work truck fuel efficiency improvement program, also establishing the necessary legal foundation for bringing that program into compliance with the law. Pending the rulemaking process for the establishment of replacement standards, NHTSA will exercise its enforcement authority with regard to all existing CAFE and MDHD standards in accordance with the interpretation set forth in this rule.

2025-09712Proposed rule

Federal Motor Vehicle Safety Standards No. 218; Motorcycle Helmets; Withdrawal

This action withdraws the notice of proposed rulemaking (NPRM) published in the Federal Register on May 21, 2015 proposing amendments to Federal Motor Vehicle Safety Standard (FMVSS) No. 218, "Motorcycle Helmets." The NPRM proposed three main changes to FMVSS No. 218: adding a definition of motorcycle helmet, adding preliminary screening requirements, and adding an alternate compliance process. Based on NHTSA's analysis of the comments received and other considerations, the Agency has decided to withdraw the rulemaking proposal.

2025-03348Final rule

Federal Motor Vehicle Safety Standards; Child Restraint Systems, Child Restraint Anchorage Systems, Incorporation by Reference; Correction

This document corrects a January 7, 2025 final rule that amended Federal Motor Vehicle Safety Standard (FMVSS) No. 225; "Child restraint anchorage systems," and FMVSS No. 213b; "Child restraint systems," to improve ease-of-use of the lower and tether anchorages, improve correct use of child restraint systems in vehicles, and maintain or improve the correct use and effectiveness of child restraint systems (CRSs) in motor vehicles. The final rule fulfilled a mandate of the Moving Ahead for Progress in the 21st Century Act (MAP- 21) requiring that NHTSA improve the ease-of-use for lower anchorages and tethers in all rear seat positions.

2025-02582Final rule

Federal Motor Vehicle Safety Standards; FMVSS No. 305a Electric-Powered Vehicles: Electric Powertrain Integrity Global Technical Regulation No. 20; Incorporation by Reference

This document delays until March 20, 2025, the effective date of the December 20, 2024, final rule that adopted Federal Motor Vehicle Safety Standard (FMVSS) No. 305a to replace FMVSS No. 305, "Electric- powered vehicles: Electrolyte spillage and electrical shock protection." FMVSS No. 305a applies to light and heavy vehicles and includes performance requirements for the propulsion battery. The final rule also established a part entitled, "Documentation for Electric- powered Vehicles," that requires manufacturers to compile risk mitigation documentation and submit standardized emergency response information to assist first and second responders handling electric vehicles.

2025-01832Final rule

Federal Motor Vehicle Safety Standards; Automatic Emergency Braking Systems for Light Vehicles

This document delays the effective date of the November 26, 2024 final rule partially granting petitions for reconsideration of a May 9, 2024 final rule that adopted Federal Motor Vehicle Safety Standard (FMVSS) No. 127, "Automatic Emergency Braking for Light Vehicles," which requires automatic emergency braking (AEB), pedestrian automatic emergency braking (PAEB), and forward collision warning (FCW) systems on all new light vehicles.

2024-31367Final rule

Federal Motor Vehicle Safety Standards; Fuel System Integrity of Hydrogen Vehicles; Compressed Hydrogen Storage System Integrity; Incorporation by Reference

This final rule establishes two new Federal Motor Vehicle Safety Standards (FMVSS) specifying performance requirements for all motor vehicles that use hydrogen as a fuel source. The final rule is based on Global Technical Regulation (GTR) No. 13, Hydrogen and Fuel Cell Vehicles. FMVSS No. 307, "Fuel system integrity of hydrogen vehicles," specifies requirements for the integrity of the fuel system in hydrogen vehicles during normal vehicle operations and after crashes. FMVSS No. 308, "Compressed hydrogen storage system integrity," specifies requirements for the compressed hydrogen storage system to ensure the safe storage of hydrogen onboard vehicles. These two standards will reduce deaths and injuries from fires due to hydrogen fuel leakages and/or explosion of the hydrogen storage system.

2024-31142Final rule

Federal Motor Vehicle Safety Standards; Child Restraint Systems, Child Restraint Anchorage Systems, Incorporation by Reference

This final rule amends Federal Motor Vehicle Safety Standard (FMVSS) No. 225; Child restraint systems, and FMVSS No. 213b; Child restraint systems, to improve ease-of-use of the lower and tether anchorages, improve correct use of child restraint systems in vehicles, and maintain or improve the correct use and effectiveness of child restraint systems (CRSs) in motor vehicles. This final rule fulfills a mandate of the Moving Ahead for Progress in the 21st Century Act (MAP- 21) requiring that NHTSA improve the ease-of-use for lower anchorages and tethers in all rear seat positions.

2024-30985Final rule

Anthropomorphic Test Devices, HIII 5TH Percentile Female Test Dummy; Incorporation by Reference

This document revises the chest jacket and spine box specifications for the Hybrid III 5th Percentile Female Test Dummy (HIII-5F). The jacket revisions resolve discrepancies between the jacket specifications in subpart O and jackets available in the field, and ensure a sufficiently low level of variation between jackets fabricated by different manufacturers. The spine box revisions eliminate a source of signal noise caused by fasteners within the box that may become loose during sled or vehicle crash tests. This rulemaking responds to a petition for rulemaking from the Alliance of Automobile Manufacturers.

2024-30340Final rule

Federal Motor Vehicle Safety Standards; Occupant Crash Protection, Seat Belt Reminder Systems, Controls and Displays

This document amends Federal Motor Vehicle Safety Standard (FMVSS) No. 208, "Occupant crash protection," to require a seat belt use warning system for rear seats. The rule also updates and enhances the current seat belt warning requirements for the driver's seat belt and extends these requirements to the front outboard passenger seat. The final rule applies (with some exceptions) to passenger cars, trucks, most buses, and multipurpose passenger vehicles with a gross vehicle weight rating of 4,536 kilograms (10,000 pounds) or less. This document also makes related amendments to FMVSS No. 101, "Controls and displays."