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Nissan Leaf  (Source: Nissan)
Leaf will get artificial "sound" sweeteners

On a number of occasions, DailyTech has discussed a concern that appears to be growing among advocates for blind pedestrians. With the rise of hybrid vehicles which run nearly silent at low speeds and fully-electric vehicles, many blind pedestrians are concerned that they won't be able to listen for typical audible cues present in modern internal combustion engines.

The NHTSA is already working on guidelines that would require hybrids and electric vehicles to produce sounds that can be heard by pedestrians at low speeds. However, Nissan it taking matters into its own hands with the upcoming Leaf electric vehicle.

The Nissan Leaf will use a sine-wave sound system that will "whistle" while the vehicle is traveling at less than 19 mph. According to Just-Auto, the sound system will sweep from 2.5kHz to 600Hz.

In addition to the artificial sound while driving at low speeds, the vehicle will also make intermittent sounds when put into reverse to alert people. And in a nod to traditional gasoline and diesel-powered vehicles, the Leaf will make a louder sound when first started up to alert pedestrians to the vehicle's presence.

You can watch a YouTube video of Nissan's system here.

Nissan has already sold of its initial allotment of Leaf EVs for the U.S. market (roughly 13,000 vehicles). The vehicle is priced at $32,780 before a $7,500 federal tax credit and can travel up to 100 miles on a charge.




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For all of you "ANTI Sound" posters.
By PAPutzback on 6/14/2010 12:45:41 PM , Rating: -1
I assume none of you have children otherwise you'd be praising Nissan for doing this. In fact 19 is probably to low of a speed to shut the sound down. There are plenty of morons that drive faster than 19 around housing where children play. And what about a a heads up for animals up the road. A deer through the windshield is fatal.
And since this is for people in front of you I would assume the sound would be directed that way. So unless you car goes faster than the speed of sound, you should not hear it. For the moron that wants to MOD his car, I hope the penalty meets your level of stupidity.




By callmeroy on 6/14/2010 2:33:36 PM , Rating: 4
There are plenty of morons that drive faster than 19 around housing where children play.

1. Sound or no sound, this won't prevent people from drive fast in residential areas - some people simply Do. Not. Care.

2. How about not allowing your kids to play near the street in the first place? Particularly if we are talking pre-teen age kids. I don't have my own kids but I'm a rather proud uncle 13 times over, I've fairly active in all my nephews and nieces lives as well. The little ones I never allow to play in the front near the street, its in the backyard or its nothing.

3. Trust me on the deer thing....sounds of engines don't scare them. I've seen it way too many times.


By Redwin on 6/14/2010 3:55:28 PM , Rating: 2
quote:
And since this is for people in front of you I would assume the sound would be directed that way. So unless you car goes faster than the speed of sound, you should not hear it


My horn faces forward, and my car is not supersonic, yet I can still hear it. It might be a little doppler-shifted, but its definitely still there.


By Keeir on 6/14/2010 4:32:07 PM , Rating: 3
1. They are going about it the wrong way. Instead of requiring a "sound" for certain cars, ALL cars should be required to prodce X decibels at Y distance at Z mph.

2. Why in world do people think its okay to teach children to play on a roadway ? Would you just let your dog roam around the roadway? Didn't think so.

3. It will need to go in a 180 degree arc at a minimum. Probably 270 degree arc. (People/Cycles/Etc can be approaching the car from the side or a slant to car where the car is outside the typical range of visibility)

4. Noise Pollution is pretty serious. Spend some time walking in any major city... or get a call from someone walking in a major city... electric cars have the potential to drastically reduce the noise of a city...(sirens, signals, etc can all be quieter if the background noise level drops)


RE: For all of you "ANTI Sound" posters.
By piroroadkill on 6/15/2010 4:46:15 AM , Rating: 1
OH NO! IF YOU HAD KIDS.. YOU'D UNDERSTAND! YOU DON'T GET IT.. MAAAAN


By virusul on 6/15/2010 7:48:01 AM , Rating: 2
Another useless car, wat can you make if you need to make 300 miles in a day, 100 miles range is ridiculous, i make that distance with my bicycle in a day, electric car will worth buying when the range is abut the same as a full tank of petrol or diesel, witch we use mostly in Europe i mean around 500 miles or 700-800 KM, until then is just a toy car or fashion item not a car.


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