Granted it's an old paper and there may have been consequent studies
conducted.The paper went into more detail with facts such as.....
Hogan’s analysis was limited to the Toyota Prius because the database only
identifies the vehicle involved in an accident by model name; the Prius is the
only hybrid with a large production volume that has been produced solely as a
hybrid.
A study by Wall-Emerson and Sauerburger (2008) illustrates these groups’
concern. Results of this study, conducted on a quiet two-way residential
street, showed that even in relatively quiet areas it was not always possible
for blind individuals to hear EVs clearly enough to know when it may be safe to
cross. National Highway Traffic Safety Administration (NHTSA, 2010) also has
studied blind pedestrians and EVs and found that these vehicles are
significantly quieter at slow speeds.
Another study compared the relative audibility of hybrid vehicles (in their
electric mode) and ICE vehicles. Binaural recordings were made of the cars
approaching from either the right or left at 5 mph. Subjects were asked to
listen to these recordings through headphones and indicate from which direction
the car came. Experiments revealed that subjects were able to determine the
approach direction of ICE cars substantially sooner than that of hybrid cars.
Another experiment added natural background sounds of idling engines to the
stimuli. This disproportionately hindered discernment of the hybrid cars so
much that they could not be identified until they were very near. Results were
the same for sighted and blind subjects (Robart & Rosenblum, 2009).
From: Peri Hartman via EV <[email protected]>
To: EVDL Administrator <[email protected]>; Electric Vehicle Discussion List
<[email protected]>
Sent: Thursday, November 17, 2016 11:31 AM
Subject: Re: [EVDL] $52M/yr 'Quiet (Electrified) cars' alert-sound rules by
2019/09
That statement may or may not be useful. We need a reference to the
study to know. For example, the clip doesn't state whether the hybrid
was using the electric or gas motor when the accident occurred, for
example. Nor does it state whether the margin of error is less than the
percentage of hybrids on the road.
Peri
------ Original Message ------
From: "EVDL Administrator via EV" <[email protected]>
To: "Electric Vehicle Discussion List" <[email protected]>
Cc:
Sent: 17-Nov-16 9:25:04 AM
Subject: Re: [EVDL] $52M/yr 'Quiet (Electrified) cars' alert-sound rules
by 2019/09
>On 17 Nov 2016 at 14:24, paul dove via EV wrote:
>
>> The analysis showed that, based on reported incidents, hybrids are no
>> more dangerous to pedestrians than other vehicles, and little
>>variation
>> exists in how and why blind or sighted pedestrians die in vehicular
>> incidents.
>
>Ah, but we can't let facts get in the way of what someone FEELS must be
>correct. :-(
>
>Thanks for posting this, not that it's going to make any difference to
>the
>folks in charge.
>
>David Roden - Akron, Ohio, USA
>EVDL Administrator
>
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>
>
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>
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