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#11
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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. |
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#12
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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
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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
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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
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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
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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
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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
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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
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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
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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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