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The University of Aalborg Study on Daytime Flashing Lights forBicycles.



 
 
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  #11  
Old March 20th 17, 02:47 AM posted to rec.bicycles.tech
SMS
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Posts: 7,713
Default The University of Aalborg Study on Daytime Flashing Lights forBicycles.

On 3/19/2017 6:08 PM, Jeff Liebermann wrote:

snip

Please have them ship the bribe, errr... evaluation sample, to the
address below.


When I had the first web site that looked at many different folding
bikes I was getting free bicycles. But that didn't affect my evaluations
and I listed the pros and cons of each model in what I believed was an
honest way.

Sorry, I have no free lights to send out to anyone, and no one has sent
me any lights for free either.

Ads
  #12  
Old March 20th 17, 02:54 AM posted to rec.bicycles.tech
SMS
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Posts: 7,713
Default The University of Aalborg Study on Daytime Flashing Lights forBicycles.

On 3/19/2017 6:30 PM, John B. wrote:

snip

The moral of this little story is that there is a danger in quoting
sources. Some rotten, no good, SOB, might read them.


Except that the Odense study compared two control groups. One with the
daytime lights, one without them. So each group had the benefit or
non-benefit of the various other changes you cited.

It was nothing like the bogus helmet "studies" we've seen in the past
where cycling rates have risen and fallen based on factors unrelated to
helmets--when cycling rates fell, it was due solely to helmet laws. When
cycling rates rose, they should have risen as fast as the population
went up. Of course you can look at China where there are no helmet laws
and where cycling rates have plunged due to other factors (private car
ownership, and a boom in subway construction).

  #13  
Old March 20th 17, 04:18 AM posted to rec.bicycles.tech
Jeff Liebermann
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Posts: 2,228
Default The University of Aalborg Study on Daytime Flashing Lights for Bicycles.

On Sun, 19 Mar 2017 18:54:54 -0700, sms
wrote:

When
cycling rates rose, they should have risen as fast as the population
went up.


Nope. If nothing changed except the population, the cycling rate
should remain constant because it's based on a percentage of that
population. Of course, everything else also changes, so it's unlikely
to be a constant rate.

"Nighttime Cycling: Accidents, Lights, and Laws in Europe"
http://www.beezodogsplace.com/wp-content/uploads/2014/10/huhn2013_Nighttime-Cycling-Accidents.pdf
"This suggests that the different rules have only a marginal
impact on the safety of bicycle traffic in the dark. Only a
small number of nighttime accidents can be clearly attributed
to the lack of lights: Other major risk factors are driving
or riding under the influence of alcohol, higher driving
speeds on empty roads at night and impaired night vision
especially in older drivers."

However, the article then blunders onward under:
"The importance of bike lights in accidents"
which makes me wonder if this is actually a contradiction between the
data collected, and the Abstract/Summary. Offhand, I would suspect
that this is one of those reports, where the data is owned by the
researcher, but the conclusions are owned by whomever funded the
study.

--
Jeff Liebermann
150 Felker St #D
http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
  #14  
Old March 20th 17, 07:08 AM posted to rec.bicycles.tech
John B.[_3_]
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Default The University of Aalborg Study on Daytime Flashing Lights for Bicycles.

On Sun, 19 Mar 2017 18:54:54 -0700, sms
wrote:

On 3/19/2017 6:30 PM, John B. wrote:

snip

The moral of this little story is that there is a danger in quoting
sources. Some rotten, no good, SOB, might read them.


Except that the Odense study compared two control groups. One with the
daytime lights, one without them. So each group had the benefit or
non-benefit of the various other changes you cited.


You really, really, should actually read the actually study.... who
was it that said something about engage the brain before activating
the voice?

Anyway, the actual study was not "One with daytime lights, one without
them" but between a permanently mounted and always on flashing light
and conventional bicycle lights. There was no indication of whether
the conventional bicycle lights were, or were not, used during the
daytime.

The results of the study was "The study contributed to a change in
Danish legislation whereby flashing bike lights became legal in 2005".

In short an always on, flashing, light, front and rear )that you can't
turn off (or forget to charge the batteries) is better than lights
that you can turn off or forget to charge.

The actual lights were the Reelight SL100 which is a permanently
mounted light mounted at the wheel axle level and powered by two
permanent magnets attached to the spokes.

Reelight states, "Reelight SL100 emits 29,000 mcd (microcandela, a
unit for measuring light) from the front light and 10,000 from the
rear light."

deleted
--
Cheers,

John B.

  #15  
Old March 20th 17, 02:59 PM posted to rec.bicycles.tech
JBeattie
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Posts: 2,226
Default The University of Aalborg Study on Daytime Flashing Lights for Bicycles.

On Sunday, March 19, 2017 at 5:51:25 PM UTC-7, Frank Krygowski wrote:
On 3/19/2017 6:24 PM, sms wrote:
On 3/19/2017 2:02 PM, Jeff Liebermann wrote:

Now I have to go cash my check from Reelight.

Such things are usually done by "loaning" you test samples of the
products, and then "forgetting" to recover them. In theory, you're
expected to declare the value of such samples as income for tax
purposes. Payments of cash or checks are rare unless you are hired as
a consultant.


Yes, but a couple of people in this group insist that the only reason I
favor good lights is because I am getting paid by light companies.


The remarks (generally about commission) arose because several of your
websites which touted dozens of products, and had at the bottom
statements something like "if you're going to buy one of these, please
start from this website so I get my commission."

And some of your web pages included a sort of brief resume in which you
bragged about doing "guerilla marketing" in bicycle forums.

Those statements seem to have been taken down now. But when they were
first discovered, there were links and quotes posted here.


Check this out: https://academic.oup.com/eurpub/arti...enting-bicycle

Don't ride in Auckland, even with a blinky.

-- Jay Beattie.
  #16  
Old March 20th 17, 04:54 PM posted to rec.bicycles.tech
Jeff Liebermann
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Posts: 2,228
Default The University of Aalborg Study on Daytime Flashing Lights for Bicycles.

On Mon, 20 Mar 2017 06:59:40 -0700 (PDT), jbeattie
wrote:

Check this out: https://academic.oup.com/eurpub/arti...enting-bicycle
Don't ride in Auckland, even with a blinky.
-- Jay Beattie.


187 accidents among 162 participants in 6.4 years? The carnage in the
streets must be awful. I would expect all cyclists to be exterminated
within their expected lifetimes. If I ride for 64 years of my life, I
would expect to get hit about 10 times.

Maybe bicycle fashion is the problem?
https://www.google.com/search?q=dazzle+camouflage+bicycle+jacket&tbm=isch


--
Jeff Liebermann
150 Felker St #D
http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
  #17  
Old March 20th 17, 06:08 PM posted to rec.bicycles.tech
SMS
external usenet poster
 
Posts: 7,713
Default The University of Aalborg Study on Daytime Flashing Lights forBicycles.

On 3/19/2017 11:08 PM, John B. wrote:

snip

We need a double-blind study of accident rates where they use 65,536
different combinations of front and rear lumens, flashing and steady,
battery and dynamo powered, performed in 128 different countries, over
ten years, in a variety of lighting conditions.

Until that study has been completed we can't be absolutely certain
whether or not an increase in conspicuity is beneficial to cyclists, so
it makes no sense for cyclists to make themselves more visible.

Let's get the UN to commission this study.

  #18  
Old March 20th 17, 06:33 PM posted to rec.bicycles.tech
Frank Krygowski[_4_]
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Posts: 4,264
Default The University of Aalborg Study on Daytime Flashing Lights forBicycles.

On 3/19/2017 8:47 PM, Jeff Liebermann wrote:

Soon, everyone will be wearing an optical test bench glued to their
helmet.


Of course! Anything less would not be safe enough!


--
- Frank Krygowski
  #19  
Old March 20th 17, 06:54 PM posted to rec.bicycles.tech
Frank Krygowski[_4_]
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Posts: 4,264
Default The University of Aalborg Study on Daytime Flashing Lights forBicycles.

On 3/19/2017 9:08 PM, Jeff Liebermann wrote:
On Sun, 19 Mar 2017 15:24:31 -0700, sms
wrote:

On 3/19/2017 2:02 PM, Jeff Liebermann wrote:

Now I have to go cash my check from Reelight.

Such things are usually done by "loaning" you test samples of the
products, and then "forgetting" to recover them. In theory, you're
expected to declare the value of such samples as income for tax
purposes. Payments of cash or checks are rare unless you are hired as
a consultant.


Yes, but a couple of people in this group insist that the only reason I
favor good lights is because I am getting paid by light companies. The
fact that it isn't true doesn't matter to them. They will come up with
any excuse they can think of to try to ignore the data.


If you arrange with Reelight to send your persecutors some free sample
lights, they might be inclined to reconsider their position.

The problem here is that if you are repeatedly accused of some
dastardly crime against the cycling multitudes, such as accepting
payola from a vendor, the mere repetition of the accusation will
eventually cause it to become a truism. Anyone who searches the web
for bicycle lighting recommendations will eventually blunder across
those accusations. The casual reader is more likely to accept the
accusations at face value than to continue reading the subsequent
discussion material. You might consider writing a explanation, FAQ,
or manifesto on the topic, which you can reference in future
discussions on the topic.


If Mr. Scharf were to do that, honesty would require including quotes of
his original statements saying something like "please start your
purchases from my website" and bragging about his "guerilla marketing to
all aspects of the bicycling community" - or whatever the precise
wording was. (I wish now I'd saved a copy.)

--
- Frank Krygowski
  #20  
Old March 20th 17, 06:59 PM posted to rec.bicycles.tech
SMS
external usenet poster
 
Posts: 7,713
Default The University of Aalborg Study on Daytime Flashing Lights forBicycles.

On 3/19/2017 8:18 PM, Jeff Liebermann wrote:
On Sun, 19 Mar 2017 18:54:54 -0700, sms
wrote:

When
cycling rates rose, they should have risen as fast as the population
went up.


Nope. If nothing changed except the population, the cycling rate
should remain constant because it's based on a percentage of that
population. Of course, everything else also changes, so it's unlikely
to be a constant rate.


Exactly. Demographics change. Roads change. Traffic changes. Bicycling
infrastructure changes. Mass-transit infrastructure changes. The economy
changes.

In Silicon Valley, the emergence of so many corporate bus systems has
reduced the number of cyclists combining a Caltrain commute with cycling
"the first and last mile" (or the first and last 5 miles). Get on an
Apple, Google, Yahoo, or Genentech bus near your home and there's no
need to deal with public transit, or the lack of public transit,
anymore. But there's been a tendency of the AHZs to blame any decline in
cycling on helmet laws, or helmet promotion, which of course has no
validity at all, it's just Trump-like "alternative facts."
 




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