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NHTSA issues Federal Motor Vehicle Safety Standards (FMVSS) to implement laws from Congress. These regulations allow us to fulfill our mission to prevent and reduce vehicle crashes.

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FMVSS Number Part Sort descending Subject Actions

49 CFR Part 571,596

Federal Motor Vehicle Safety Standards; Child Restraint Systems; Child Restraint Anchorage Systems
218 49 CFR Part 571. Motorcycle Helmets

A notice of proposed rulemaking (NPRM) amending FMVSS No. 218 was published on May 21, 2015 (80 FR 29458). The NPRM set forth an interpretation of the definition of “motor vehicle equipment” in the United States Code, as amended by the Moving Ahead for Progress in the 21st Century (MAP–21) Act, and requested comments on two proposed changes to the motorcycle helmet safety standard, FMVSS No. 218. NHTSA proposed to add a definition of “motorcycle helmet” and modify the existing performance requirements of the standard by adding a set of dimensional and compression requirements. These requirements and the associated test procedures would identify those helmets whose physical characteristics indicate that they likely cannot meet the existing performance requirements of the standard. Third, NTHSA proposed an optional alternative compliance process for manufacturers whose helmets do not comply with the proposed dimensional and compression requirements, but do comply with the performance requirements and all other aspects of FMVSS No. 218 . If this proposal is adopted, NHTSA will publish a list of helmets that have complied with the alternative compliance process and can therefore be certified by their manufacturers. The NPRM was the result of the agency’s assessment of other actions that could be taken to further increase the percentage of motorcyclists who wear helmets that comply with the helmet standard.

49 CFR Part 573, 574, 576, 579

Reporting of Information and Documents About Potential Defects; Retention of Records That Could Indicate Defects
49 CFR Part 575 Tire Fuel Efficiency Consumer Information Program

Proposes a broad new consumer information program for replacement tires to inform consumers about the effect of tires on fuel efficiency, safety, and durability. This consumer information program would implement a national tire fuel efficiency rating system for replacement tires, with the information provided to consumers at the point of sale and online. Fuel efficiency ratings are expected to inform consumers so that they will be better informed about replacement tire performance. This consumer information program seeks to enhance energy security and reduce costs by improving fuel economy. Information would also be provided about safety and durability.

49 CFR Part 575

Safety Rating Program for Child Restraint Systems

Safety Rating Program for Child Restraint Systems

49 CFR Part 575 Stars on Cars: New Car Assessment Program (NCAP) Safety Labeling

A provision of the Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users (SAFETEA-LU) requires new passenger vehicles to be labeled with safety rating information published by the National Highway Traffic Safety Administration under its New Car Assessment Program. NHTSA is required to issue regulations to ensure that the labeling requirements “are implemented by September 1, 2007.” This final rule is issued to fulfill that mandate.

49 CFR Part 575

Consumer Information Regulations; Federal Motor Vehicle Safety Standards; Rollover Resistance

49 CFR Part 575

Consumer Information; New Car Assessment Program; Rollover Resistance

49 CFR Part 576

Recordkeeping and Record Retention

49 CFR Part 591

Importation of Commercial Motor Vehicles

This document proposes to add a definition of the term "import" to our regulation on the importation of motor vehicles.


49 CFR Part 595

Air Bag Deactivation
208 49 CFR Part 595 Retro Fit On-Off Switches for Air Bags

To facilitate further the modification of vehicles to accommodate individuals with disabilities, the agency is proposing to expand the existing exemption from a statutory provision that prohibits specified types of commercial entities from either removing safety equipment or features installed on motor vehicles


49 CFR Part 595

Exemption from the Make Inoperative Prohibition
49 CFR Parts 523, 531, 533, 534, 536 and 537 Average Fuel Economy Standards, Passenger Cars and Light Trucks, Model Year 2011

NHTSA estimates that the MY 2011 standards will raise the industry-wide combined average to 27.3 mpg, save 887 million gallons of fuel over the lifetime of the MY 2011 cars and light trucks, and reduce CO2 emissions by 8.3 million metric tons during that period.

49 CFR Parts 523, 531, 534, 536, 537 Average Fuel Economy Standards, Passenger Cars and Light Trucks, Model Years 2011-2015

Proposes substantial increases in the Corporate Average Fuel Economy (CAFE) standards for passenger cars and light trucks that would enhance energy security by improving fuel economy. Since the carbon dioxide (CO2) emitted from the tailpipes of new motor vehicles is the natural by-product of the combustion of fuel, the increased standards would also address climate change by reducing tailpipe emissions of CO2. Those emissions represent 97 percent of the total greenhouse gas emissions from motor vehicles. Implementation of the new standards would dramatically add to the billions of barrels of fuel already saved since the beginning of the CAFE program in 1975.

NHTSA on the Federal Register

View notices, proposed rules and final rules NHTSA administers. Also respond to requests for comment.