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NHTSA Extends Quiet Car Rules Deadline By Six Months

The National Highway Traffic Safety Administration (NHTSA) said that it would extend the deadline of new rules stipulating that “quiet cars,” specifically hybrid and electric vehicles, require warning sounds to alert pedestrians of their approach, citing delays resulting from the COVID-19 pandemic.

The new rules stipulate that any vehicle up to 10,000 pounds must emit between 43 and 64 decibels at speeds up to 18.6 mph, or when traveling in reverse. Beyond 18.6 mph speed, wind and tire noise should be enough to alert pedestrians, including the visually impaired.

Back in 2016, the NHTSA mandated that all new hybrid and electric vehicles should emit enough sound to alert pedestrians of their approach. The rules laid a requirement for half of all new vehicles to comply by September 1st, 2018, and all-new vehicles as of September 1st, 2019.

The rules deadline was later moved to September 1st, 2020. However, a group representing a number of major automakers, including General Motors, Toyota, and Volkswagen, petitioned the NHTSA to extend the deadline by another year to 2021. In response, the NHTSA extended the compliance deadline six months until March 1st, citing delays stemming from the COVID-19 pandemic as justification.

Unlike in a traditional, non-hybrid internal combustion vehicle, all-electric vehicles and hybrid vehicles are typically much quieter. As such, these types of vehicles can pose a danger to pedestrians who may be unaware of their approach, in particular the visually impaired. In fact, NHTSA research indicates that collisions between hybrids and pedestrians/cyclists occur at a higher incidence rate than traditional internal-combustion vehicles.

As General Motors pushes towards offering a variety of new all-electric products, including the Cadillac Lyriq, Chevrolet Bolt EUV and GMC Hummer, these new rules will have a major impact. Some of the solutions could include speakers mounted in the bumper that produce an audible noise to alert pedestrians without being heard by passengers inside the vehicle cabin.

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Jonathan Lopez: Jonathan is an automotive journalist based out of Southern California. He loves anything and everything on four wheels.

View Comments (2)

  • I really don't understand why this keeps getting delayed. Which manufacturer doesn't have a noisemaker already in their EVs? GM's had them in all their EVs and EREVs since 2016. Is the problem that some ICE cars are too quiet at low speeds and will also require noisemakers?

  • Don't all cars and trucks already have a noisemaker?
    it's commonly called a horn.
    You can use it to warn people in an emergency
    or to wake up people in your car pool that overslept