The National Highway Traffic Safety Administration on Monday proposed allowing automakers to offer a variety of sound choices for electric vehicles and other “quiet cars” to choose from to alert pedestrians.

The agency in February 2018 finalized rules requiring EVs and hybrids to emit alert sounds to warn pedestrians of their approach, extending to 2020 the deadline for full compliance.

The long-delayed rules, which were first demanded by Congress in 2010, require automakers like Tesla Inc, Nissan Motor Co and General Motors Co to add sounds to vehicles when they are moving at speeds of up to 18.6 miles per hour (30 kph) to help prevent injuries among pedestrians, cyclists and the blind.
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