NoiseOFF Noise Pollution Electric Vehicles

29 мая 2014 | Author: | Комментарии к записи NoiseOFF Noise Pollution Electric Vehicles отключены
Toyota i-Road EVs Electric Cars

Electric Vehicles


Our use of the Electric Vehicles (EVs) hybrid vehicles (such as the Prius), all-electric or plug-in (such as the Tesla Roadster).

The of the EV is a promising automotive solution in addition to reducing air pollution, costs and a dependence on foreign also reduces noise

Millions of people live busy roadways, thoroughfares, and parking lots with noise at all hours of the day and night. electric motors produce sound than Internal Engines (ICEs) requiring a pipe muffler to mitigate emissions, EVs make urban more livable for affected Consumers are attracted to EVs because are quieter vehicles.


The National Federation of the Blind an advocacy organization for its sight-impaired is lobbying the government to mandate vehicle sound on EVs. are also collaborating with to voluntarily introduce artificial sound. They claim EVs pose a safety risk for pedestrians who rely on hearing an vehicle to judge its speed and while navigating intersection and other traffic situations.

the NFB first announced that EVs a danger, the media attention was with coverage in newspapers, news, automotive blogs and making the rounds of late-night monologues. However, few questions raised on the issue on the impact of noise pollution on society.

In the NFB provided seed money to a company called Enhanced Acoustics to design external on EVs. They have prototypes for use on the Toyota Prius the intention of licensing their to automakers.

In 2008, the University of California a study that evaluated the of sounds emitted by EV and ICE vehicles at five miles per hour. claimed they could the sound of an internal-combustion vehicle it was twenty-eight feet away, but not detect the sound of a hybrid (in battery mode) until it was feet away. The study was by the NFB.

A controlled laboratory is very different than the of city streets where the din of often masks individual of vehicles in motion. Most produce low frequency sound that is non-directional. The broader is that any type of vehicle motorcycles, scooters, mopeds, bicycles also present a to the blind.

In 2008, the NFB lobbied the Highway Traffic Safety (NHTSA) to hold a public on the issue and called in government automotive industry representatives and to testify. Representatives from NFB calling for additional studies and mandating artificial vehicle on EVs.

In 2008 and 2009, the NFB the United States Congress to what is now called the Pedestrian Enhancement Act of 2009. The bill is by Senator John Kerry and Arlen Spector (D-MA). It direct the Secretary of Transportation to and establish a motor vehicle standard that provides for a of alerting blind and other of motor vehicle operation.

In 2009, the National Highway Safety Administration (NHTSA) a technical report titled, of Pedestrian and Bicyclist Crashes by Electric Passenger Vehicles’ HS 811 204) comparing the incidence of pedestrian and bicyclist crashes involved EVs and ICEs under circumstances.

A total of 77 pedestrians and 48 involved in crashes with EVs sampled (compared to 3578 and 1862 bicyclists involved in with ICE vehicles comparatively). the sample group, there was a difference in cases where EVs a higher incidence rate backing up or making a turn at speeds. There was no difference both types of vehicles going straight.

There was no whether any of these accidents caused by extraneous circumstances, as distracted drivers or pedestrians mobile phones or listening to

NHTSA noted that the of the study was not intended to make estimates on the issue, because the were based on a small size. That caution did not hinder NHTSA and NFB from the report as a watershed in the national

Even if artificial vehicle is mandated on EVs, there are in sound energy. For example, the Safety and Health Administration mandates the use of back-up alarms on for safety. However, the intense noise emitted from back-up alarms is a noise for workers and a nuisance for nearby Improved back-up alarms a broadband sound (white that dissipates over a distance reducing noise OSHA has never acted to broadband sound in spite of calls to do so.

As NHTSA is oblivious to the public issues of noise pollution, from noise control are shut out of the dialog.

While the States Congress recognized the effects of noise pollution, no agency is mandated with its health and environmental consequences, the Environmental Protection Agency where its Office of Noise and Control (ONAC) was essentially As a result, the problem of elevated noise caused by artificial sound is unregulated with no afforded to the public.

CNN — Boy Hit By Car

The National Federation of the Blind is placements in national news by scaremongering the dangers of quiet The intended message is: don’t the driver or the boy, blame the

Alternative Solutions

There are technologies that can alert pedestrians to EVs. One solution is a receiver device sight-impaired can wear that will an audible sound when an EV is in proximity. EVs equipped with a transmitter sends a signal to the relative to its distance.

This produce a discreet alert to pedestrians that would no effect on increasing noise

This concept has been rejected by the NFB and they are pushing for loudspeakers on all EV vehicles. The NFB is trying to a public safety measure, the public health ramifications on pollution recognized by leading organizations, scientific and medical and peer-reviewed journals.

The NFB is using money and political to increase noise pollution and adversely affect millions of in the name of pedestrian safety.

The Trail

Toyota i-Road EVs Electric Cars

Why are automakers and technology so eager to develop artificial sound?

By aligning itself NFB and voluntarily adding external to its vehicles, the auto industry to avoid any additional government By hedging that the government may artificial vehicle sound, companies see financial opportunities patent licensing fees to

The marketable ‘look at me’ is part of the experience of buying and a new car. This is especially for expensive sportcars, such as the Fisker Karma that conspicuous consumption.

Lotus and Harman International Industries a hybrid demonstrator vehicle simulates gasoline engine using loudspeakers rated at 300 each, louder than car stereo systems. They it a ‘Safe Sound’ vehicle.

consumers have negative of battery-powered cars: small, range limited, and boring. EVs the aggressive ‘vroom vroom’ that some consumers for in a new car. Instead of a vehicle is simply quiet, automakers can noise as something futuristic and

In the case of Nissan, their engineers worked with composers to create a custom that has been described as of the futuristic flying cars in the motion picture, Blade

In so much the way noise from pipes on motorcycles is often as a safety feature, the auto is attempting to justify the same for vehicle sound.

The Society of of Engineers (SAE) created a and Human Factors Committee’ for the sound levels emitted by The SAE had previously collaborated with the Motorcyclist Association in creating a for measuring sound on motorcycle systems, intended to obfuscate EPA label match-up. an effective for law enforcement to catch riders illegal straight pipes.

The is that the auto industry is for resisting safety improvements, as seat belts (invented in the and not implemented until the 1950’s) and (invented in the 1950’s and not implemented the 1980’s). In the case of artificial sound, the industry is racing to a solution to a non-existent safety More so, the industry is astroturfing the of pedestrian safety.

An aftermarket supplier, Sigma Automotive, aftermarket hot-rod exhaust for the Toyota Prius on the basis exhaust noise improves As the vehicle does not displace gases in battery mode, the of turning the Prius into a car for safety is completely lost.

America, an advocacy group works to promote the widespread of EVs is against mandating artificial sound. Their position on is that EVs are quiet, but not silent. claim that at parking lot an EV will produce similar as ICE vehicles because of various pumps, and tire noise.

Artificial Vehicle Sound

The to produce artificial vehicle consists of external loudspeakers and a device that produces engine noise or branded effects by automakers. Custom added by the consumer are also

Nissan and Fisker Automotive are with sound effects to develop distinct sounds for upcoming EVs. The vehicles use loudspeakers which has the effect of the passenger compartment quiet the noise is heard outside.

recognize that the way mobile ringtones convey a brand, can also be added with ‘car tones’ to convey its own Ringtones on mobile phones is an billion dollar business is a highly profitable segment of the industry. The marketing and revenue will come at the expense of captive to unwanted noise.

Toyota i-Road EVs Electric Cars
Toyota i-Road EVs Electric Cars
Toyota i-Road EVs Electric Cars


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