HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
News
Electronics & Test
NHTSA Wants Hybrids, EVs to Be Noisier
1/16/2013

Toyota's Prius uses a Vehicle Proximity Notification System under the hood that emits additional engine-like noises below 15mph.   (Source: Toyota)
Toyota's Prius uses a Vehicle Proximity Notification System under the hood that emits additional engine-like noises below 15mph.
(Source: Toyota)

Return to Article

View Comments: Newest First|Oldest First|Threaded View
<<  <  Page 3/6  >  >>
VadimR
User Rank
Gold
Re: Feel ambivalent about this
VadimR   1/17/2013 2:46:42 PM
I average 18mph (burst of up to 30mph) on a7 mile ride and I have never been unable to hear approaching cars from behind.  Do I trust my ears alone? No.  But I've never been surprised by Prius, Volt, Tesla Roadster, or any other hybrid or electric vehicles.  In biking events or on bike paths I can even hear approaching bicycles from behind (bike chain, wind, and tire noise).  So I'm surprised that wind noise overpowers car noises for you.

Elizabeth M
User Rank
Blogger
Colorful commentary
Elizabeth M   1/17/2013 2:37:46 PM
It's been interesting to see all the comments about this! Obviously it's struck a nerve...and danger aside, I'm happy to see a number of people less than thrilled about the idea of noisier hybrids and EVs. There has to be a better solution.

Burch
User Rank
Iron
Reminds me of....
Burch   1/17/2013 2:25:50 PM
NO RATINGS
The Locomotive Acts (or Red Flag Acts) were a series of Acts of Parliament in the United Kingdom to control the use of mechanically propelled vehicles on British public highways during the latter part of the 19th century.

...

The 1865 act required all road locomotives, which included automobiles, to travel at a maximum of 4 mph (6 km/h) in the country and 2 mph (3 km/h) in towns and have a crew of three travel, one of whom should carry a red flag walking 60 yards (55 m) ahead of each vehicle.

http://en.wikipedia.org/wiki/Locomotive_Acts

Cheers....

eafpres
User Rank
Gold
Re: Another stupid idea...
eafpres   1/17/2013 2:12:25 PM
NO RATINGS
Yes, the link works and it is very quick.

eafpres
User Rank
Gold
Re: Noisier EVs
eafpres   1/17/2013 1:51:11 PM
NO RATINGS
Backup audible warning is already implemented on most trucks, commercial vehicles, municipal vehicles, etc.  That is not a bad idea; the driver has limited view, and risk is higher.  But that is totally different than always on noise generators.

mr88cet
User Rank
Silver
Re: Another stupid idea...
mr88cet   1/17/2013 1:50:49 PM
NO RATINGS
Again, to comment,

     http://www.regulations.gov/#!submitComment;D=NHTSA-2011-0148-0075

worked for me.  It took a few minutes...

eafpres
User Rank
Gold
Re: Another stupid idea...
eafpres   1/17/2013 1:48:17 PM
NO RATINGS
greenewr--thanks for posting the link.  There is a process.  If enough people comment, it might make a difference one way or another.

eafpres
User Rank
Gold
Re: Feel ambivalent about this
eafpres   1/17/2013 1:43:11 PM
Extra: Noun: An item in addition to what is usual or strictly necessary.

If you have to add the noise to an EV or Hybrid, it is extra.  The world is way too noisy today.

While they are at it, why not ban wearing earbuds, headphones, hats covering the ears, earplugs, earmuffs, or anything else which reduces the auditory acuity of pedestrians?

We have too many rules, too many regulations, too many laws.

EdV
User Rank
Iron
Re: Feel ambivalent about this
EdV   1/17/2013 1:42:13 PM
NO RATINGS
Whatever sound the car comes with, it should be downloadable like ring tones. It would be a huge market and create lots of new value - and annoyance.

eafpres
User Rank
Gold
Re: Feel ambivalent about this
eafpres   1/17/2013 1:37:12 PM
NO RATINGS
I support a rule requiring EV drivers to crank their stereos below 15 mph.  Would be easy to implement in the electronics already there, and cost nothing.

<<  <  Page 3/6  >  >>
Partner Zone
Latest Analysis
It's been two years since the Mac Mini's last appearance on iFixit's teardown table, but a newly revised version joins Apple's lineup this week.
More often than not, with the purchase of a sports car comes the sacrifice of any sort of utility. In other words, you can forget about a large trunk, extra seats for the kids, and more importantly driving in snowy (or inclement) weather. But what if there was a vehicle that offered the best of both worlds; great handling and practicality?
Kevin Gautier of Formlabs describes the making of a carbon fiber mold for an intake manifold, using a $3,300 3D printer, during Medical Design & Manufacturing Midwest.
Science fiction author Isaac Asimov may have the best rules for effective brainstorming and creativity. His never-before-published essay, "On Creativity," recently made it to the Web pages of MIT Technology Review.
Much has been made over the potentially dangerous flammability of lithium-ion batteries after major companies like Boeing, Sony, and Tesla have grappled with well-publicized battery fires. Researchers at Stanford University may have come up with a solution to this problem with a smart sensor for lithium-ion batteries that provides a warning if the battery is about to overheat or catch fire.
More:Blogs|News
Design News Webinar Series
10/7/2014 8:00 a.m. California / 11:00 a.m. New York
9/25/2014 11:00 a.m. California / 2:00 p.m. New York
9/10/2014 11:00 a.m. California / 2:00 p.m. New York
7/23/2014 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Oct 20 - 24, How to Design & Build an Embedded Web Server: An Embedded TCP/IP Tutorial
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Next Class: 10/28-10/30 11:00 AM
Sponsored by Stratasys
Next Class: 10/28-10/30 2:00 PM
Sponsored by Gates Corporation
Next Class: 11/11-11/13 2:00 PM
Sponsored by Littelfuse
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service