The National Highway Traffic Safety Administration (NHTSA) said the rule was needed because battery-powered vehicles are very quiet.
It said the rule would particularly help blind pedestrians, or those with a visual impairment, detect electric cars and hybrids on the road.
The new safety rule could help prevent 2,400 injuries a year, said the NHTSA.
The rule demands that the cars make a noise when travelling either forwards or backwards at speeds of less than 30kmh (19mph). The regulation covers vehicles with four wheels that weigh less than 10,000 pounds (4.5 tonnes).
The safety specification requires car makers to use a two-tone signal similar to that currently emitted by heavy vehicles when they are reversing.
It would be more fun if drivers could customize what that sound is, such as "La Cucaracha" or the whine of a Shadow vessel.
Electric and hybrid cars are to include a noise generation device for travel at low speeds with no internal combustion engine: http://www.nhtsa.gov/About-NHTSA/Press-Releases/nhtsa_quiet_car_final_rule_11142016.
There goes my quiet electric future.
(Score: 0) by Anonymous Coward on Wednesday November 16 2016, @07:43PM
Years ago a company was promoting a noise generator as alarm. Like white noise, or pink noise or one of those. It was a lot calmer yet same effectiveness.
Found it! http://brigade-electronics.com/product/reversing-warning-alarms/overview-was [brigade-electronics.com] with video https://www.youtube.com/watch?v=4hLIckg8bPI [youtube.com] Maker claims it's even better because our ears can locate better the broadband noise and it disipates so not annoying at long range. It also seems to be the only valid for contruction vehicles in NYC. Some models even monitor external noise to adjust output to match (click "Alternative reversing alarms").
Imagining we have to go with beep beep for normal use is silly. We can go with motor-like noise that adjusts as needed. I wonder why beeps are allowed at all, instead of something else (like NYC case).