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GYXU > Cycling > Broken helmets [was: Man dies after biking into retaining wall] 28 March 2005 02:35:57

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Broken helmets [was: Man dies after biking into retaining wall]

Dr. Richard E. Hawkins 22 March 2005 01:22:33
 In article <1110850979.858429.­148900@f14g2000cwb.g­ooglegroups.com>,
<frkrygow@yahoo.com­> wrote:>
Ken Marcet wrote:>>
Well I am guilty of the no helmet thing too so I can't really say>much about>> that.>
There should be no feeling of guilt involved, any more than feeling>guilty for not having tattoos, not carrying a cell phone camera, etc.>They're all fashionable, over-sold and pretty useless.

I've found them quite useful . . . having broken two of them.

The first was in Las Vegas in 1994. A driver didn't want to wait for a
light in a constructions zone. I felt the impact, had trouble remaining
upright (later I would realize that this is quite natural when neither
wheel is in conact with the ground), and landed 20-30 feet away. I only
got half the plate before I couldn't keep my head up.

The foam was still in a single piece, but it was now cracked and loose
inside the outer lining. Best $50 I ever spen.

The second one was probably my own fault. It was in Iowa, at night afet
I helped administer a test. I *should* have bummed a ride home from the
prof I was working for.

Iowa has a "freezing rain" which comes down supercooled, creating sheet
ice on impact. I lost control the first time in the rain-shadow of an
underpath--as it freezes instantly, the lee of the train track was dry,
and my back wheel on ice caught up with the front wheel on pavement.
That merely hurt.

I went down aa half a mile later and broke the helmet, one of the
now-recalled duck-tail helmets. I landed just right, with the
duck-tail absorbing most of the impact and completely splitting.

They work. I'd probably have ended up a vegetable both times without
one.

hawk


--
Richard E. Hawkins, Asst. Prof. of Economics /"\ ASCII ribbon campaign
dochawk@psu.edu 111 Hiller (814) 375-4846 \ / against HTML mail
Find commentary on law, economics, and X and postings.
other issues of the day at dochawk.org! / \
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Tom Sherman 22 March 2005 06:07:41 permanent link ]
 Dr. Richard E. Hawkins wrote:
...> The second one was probably my own fault. It was in Iowa....

No more needs to be said. ;)

--
Tom Sherman - Earth (Downstate Illinois, North of Forgottonia)

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Peter Keller 22 March 2005 14:00:23 permanent link ]
 On Mon, 21 Mar 2005 21:22:33 +0000, Dr. Richard E. Hawkins wrote:
I've found them quite useful . . . having broken two of them.>
The first was in Las Vegas in 1994. A driver didn't want to wait for a> light in a constructions zone. I felt the impact, had trouble remaining> upright (later I would realize that this is quite natural when neither> wheel is in conact with the ground), and landed 20-30 feet away. I only> got half the plate before I couldn't keep my head up.>
The foam was still in a single piece, but it was now cracked and loose> inside the outer lining. Best $50 I ever spen.>
The second one was probably my own fault. It was in Iowa, at night afet> I helped administer a test. I *should* have bummed a ride home from the> prof I was working for.>
Iowa has a "freezing rain" which comes down supercooled, creating sheet> ice on impact. I lost control the first time in the rain-shadow of an> underpath--as it freezes instantly, the lee of the train track was dry,> and my back wheel on ice caught up with the front wheel on pavement.> That merely hurt. >
I went down aa half a mile later and broke the helmet, one of the> now-recalled duck-tail helmets. I landed just right, with the> duck-tail absorbing most of the impact and completely splitting.>
They work. I'd probably have ended up a vegetable both times without> one.>
hawk

One can never say, as it is usually impossible to re-run the scenario, not
wearing a helmet.
However, I am impressed by the large numbers of people whose lives or
brains were saved because they were wearing a helmet.
There are many times more of these than there ever were people who
died or became vegetables before helmet-wearing became commonplace!

Peter

--
If you are careful enough in life, nothing bad -- or
good -- will ever happen to you.

Add comment
Ken Marcet 22 March 2005 19:05:32 permanent link ]
 
"Peter Keller" <muzh@ihug.co.nz> wrote in message
news:p­an.2005.03.22­.10.00.22.214703@ihu­g.co.nz...> On Mon, 21 Mar 2005 21:22:33 +0000, Dr. Richard E. Hawkins wrote:>
I've found them quite useful . . . having broken two of them.> >
The first was in Las Vegas in 1994. A driver didn't want to wait for a> > light in a constructions zone. I felt the impact, had trouble remaining> > upright (later I would realize that this is quite natural when neither> > wheel is in conact with the ground), and landed 20-30 feet away. I only> > got half the plate before I couldn't keep my head up.> >
The foam was still in a single piece, but it was now cracked and loose> > inside the outer lining. Best $50 I ever spen.> >
The second one was probably my own fault. It was in Iowa, at night afet> > I helped administer a test. I *should* have bummed a ride home from the> > prof I was working for.> >
Iowa has a "freezing rain" which comes down supercooled, creating sheet> > ice on impact. I lost control the first time in the rain-shadow of an> > underpath--as it freezes instantly, the lee of the train track was dry,> > and my back wheel on ice caught up with the front wheel on pavement.> > That merely hurt.> >
I went down aa half a mile later and broke the helmet, one of the> > now-recalled duck-tail helmets. I landed just right, with the> > duck-tail absorbing most of the impact and completely splitting.> >
They work. I'd probably have ended up a vegetable both times without> > one.> >
hawk>
One can never say, as it is usually impossible to re-run the scenario, not> wearing a helmet.> However, I am impressed by the large numbers of people whose lives or> brains were saved because they were wearing a helmet.> There are many times more of these than there ever were people who> died or became vegetables before helmet-wearing became commonplace!>
I don't know any stats for this, but the numbers must be impressive. I
remember when I was younger, perhaps when I was a teenager, no one wore
helmets, but then when the mtb crazy took off so did helmets.

Ken

Peter>
-- > If you are careful enough in life, nothing bad -- or> good -- will ever happen to you.>

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Dr. Richard E. Hawkins 22 March 2005 20:15:56 permanent link ]
 In article <3a9cv7F5vpc23U4@in­dividual.net>,
Tom Sherman <tsherman@qconline.­com> wrote:>Dr. Richard E. Hawkins wrote:>
...>> The second one was probably my own fault. It was in Iowa....>
No more needs to be said. ;)

:)­

But *that* part wasn't my fault. My other choices for grad school were
even colder . . .

hwk, who gets through Pennsylvania weather by reminding himself "It's
worse in Iowa"
--
Richard E. Hawkins, Asst. Prof. of Economics /"\ ASCII ribbon campaign
dochawk@psu.edu 111 Hiller (814) 375-4846 \ / against HTML mail
Find commentary on law, economics, and X and postings.
other issues of the day at dochawk.org! / \
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Dr. Richard E. Hawkins 22 March 2005 21:15:02 permanent link ]
 In article <pan.2005.03.22.10.­00.22.214703@ihug.co­.nz>,
Peter Keller <muzh@ihug.co.nz> wrote:>On Mon, 21 Mar 2005 21:22:33 +0000, Dr. Richard E. Hawkins wrote:
I went down aa half a mile later and broke the helmet, one of the>> now-recalled duck-tail helmets. I landed just right, with the>> duck-tail absorbing most of the impact and completely splitting.>>
They work. I'd probably have ended up a vegetable both times without>> one.

One can never say, as it is usually impossible to re-run the scenario, not>wearing a helmet.

True, you can't be *certain*. But it is, at best, highly improbable
that my skull alone would have held up to an impact that visibly broke
the helmet and still had enough left to leave me stunne . . .
However, I am impressed by the large numbers of people whose lives or>brains were saved because they were wearing a helmet.>There are many times more of these than there ever were people who>died or became vegetables before helmet-wearing became commonplace!

a) Much more is reported now than in the past. (E.g., child
kindnappings are *not* more common today than in the past; it's just
that the whole country gets heavy coverage of every single one).

b) more people are riding than in the past.

hawk
--
Richard E. Hawkins, Asst. Prof. of Economics /"\ ASCII ribbon campaign
dochawk@psu.edu 111 Hiller (814) 375-4846 \ / against HTML mail
Find commentary on law, economics, and X and postings.
other issues of the day at dochawk.org! / \
Add comment
Tom Keats 22 March 2005 21:33:49 permanent link ]
 In article <d1pjqm$p3e$1@f04n1­2.cac.psu.edu>,
hawk@slytherin.ds.p­su.edu (Dr. Richard E. Hawkins) writes in part:
b) more people are riding than in the past.

I sure hope so. It's a lovely thought, anyways.
Especially if many of the "more people" are coming
from the younger generations, to perpetuate cycling.


cheers,
Tom

--
-- Nothing is safe from me.
Above address is just a spam midden.
I'm really at: tkeats [curlicue] vcn [point] bc [point] ca
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Just zis Guy 22 March 2005 23:25:22 permanent link ]
 On Tue, 22 Mar 2005 17:15:02 +0000 (UTC), hawk@slytherin.ds.p­su.edu
(Dr. Richard E. Hawkins) wrote in message
<d1pjqm$p3e$1@f04n1­2.cac.psu.edu>:
True, you can't be *certain*. But it is, at best, highly improbable>that my skull alone would have held up to an impact that visibly broke>the helmet and still had enough left to leave me stunne . . .

One of the reasons a helmet which breaks on test *always* fails the
evaluation is that polystyrene foam absorbs very little energy in
brittle failure. Nobody knows how much was absorbed before the helmet
fractured, but an impact which is sufficient to destroy the helmet is
probably going to do so quite quickly.

I can't immediately think of any other scenario where such a large
claim - saving of life - is made on behalf of safety equipment which
clearly failed to work as designed.

But while we're on the subject, let me tell you about the time I was
hit *hard* by a car - I was thrown about 15ft through the air and
landed head first. I was out for the count, I woke up about ten
minutes later as I was loaded into the ambulance. There is no doubt
that if I had not been wearing protective headgear I would be dead
now. Yes, that knitted acrylic balaclava of mine sure saved my life.
No possible mistake. And guess what? I still have it! It could save
my life again! So much for flimsy polystyrene which has to be thrown
away after any impact!
However, I am impressed by the large numbers of people whose lives or>>brains were saved because they were wearing a helmet.>>There are many times more of these than there ever were people who>>died or became vegetables before helmet-wearing became commonplace!
a) Much more is reported now than in the past. (E.g., child>kindnappings are *not* more common today than in the past; it's just>that the whole country gets heavy coverage of every single one).

And cyclist injuries are not more common now ... oh, wait, according
to the CPSC the rate of cyclist head injuries increased by about 40%
as helmet use doubled. Er...
b) more people are riding than in the past.

And that tends to improve safety, in a way that widespread helmet use
does not, as the evidence shows. Which is good, as primary safety is
always better than secondary safety. Always.

Guy
--
May contain traces of irony. Contents liable to settle after posting.
http://www.chapmanc­entral.co.uk

85% of helmet statistics are made up, 69% of them at CHS, Puget Sound
Add comment
RonSonic 23 March 2005 18:00:09 permanent link ]
 On Tue, 22 Mar 2005 18:48:58 -0700, Mark Hickey <mark@habcycles.com­> wrote:
"Just zis Guy, you know?" <uce@ftc.gov> wrote:>
One of the reasons a helmet which breaks on test *always* fails the>>evaluation is that polystyrene foam absorbs very little energy in>>brittle failure. Nobody knows how much was absorbed before the helmet>>fractured, but an impact which is sufficient to destroy the helmet is>>probably going to do so quite quickly.>
Just a single anecdotal bit of evidence, but tell me you'd like to>have tried out your semi-bare skull's ability to withstand the hit my>helmet took...>
As it was I had lingering memory effects from the concussion for>months (yes, that means I was even flakier than I am now). >
Maybe it was the exception, but I honestly don't think my skull (as>hard and thick as it is in legend) would have been able to withstand>the focused impact. How much the "cushioning" did for my neck and>soft tissue I'll never know, but it sure couldn't have hurt... I still>have effects from that in my back almost two years later, so anything>it did helped prevent further injury.>
YMMV...>
Mark "not so much into helmets as statistics" Hickey

And powerful anecdotal evidence.

Ouch.

Ron


Habanero Cycles>http://www.h­abcycles.com>Home of the $695 ti frame

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Just zis Guy 25 March 2005 00:32:47 permanent link ]
 On Tue, 22 Mar 2005 18:48:58 -0700, Mark Hickey <mark@habcycles.com­>
wrote in message <8di1411u7c5od6ddsl­bf9kvo05dcjt9hb5@4ax­.com>:
Just a single anecdotal bit of evidence, but tell me you'd like to>have tried out your semi-bare skull's ability to withstand the hit my>helmet took...

I've had an RTA while wearing a knitted balaclava. I survived. I had
a nasty headache for a week, and that might even have been reduced if
I'd worn a helmet. Maybe. Or maybe not.

As I have said before, I don't know where the idea came from that all
bike crashes were inevitably fatal before helmets came along, or that
helmeted cyclists who survive do so only because of their helmets.

Looking at whole-population evidence, there is no sign that helmets
prevent a measurable number of serious injuries. So if they do
prevent some, they must cause others, through risk compensation or
some other effect.

My view remains that it is up to the individual whether to wear a
helmet or not. My decision on that one varies from day to day and
from bike to bike. The only people looking to force their decision on
others are the compulsionists, as far as I can tell, and an amazing
number of them turn out not to be cyclists at all. Funny, that.

Guy
--
May contain traces of irony. Contents liable to settle after posting.
http://www.chapmanc­entral.co.uk

85% of helmet statistics are made up, 69% of them at CHS, Puget Sound
Add comment
Tom Sherman 25 March 2005 04:46:03 permanent link ]
 Guy Chapman wrote:
...> The thing is, if you look at charts of head injury rates against> helmet wearing rates for various countries around the world, and> compare cyclists with pedestrians, and look at years in which laws> have been introduced which cause massive increases in wearing rates,> what you find is that the effect is unmeasurably small....

The total gain in increased lifetime from bicycle h*lm*t use is less
than the time spent arguing about h*lm*ts on rec.bicycles.*. ;)

--
Tom Sherman - Earth (Downstate Illinois, North of Forgottonia)

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Mark Hickey 25 March 2005 07:55:09 permanent link ]
 "Just zis Guy, you know?" <uce@ftc.gov> wrote:
On Tue, 22 Mar 2005 18:48:58 -0700, Mark Hickey <mark@habcycles.com­>>wrote in message <8di1411u7c5od6ddsl­bf9kvo05dcjt9hb5@4ax­.com>:>
Just a single anecdotal bit of evidence, but tell me you'd like to>>have tried out your semi-bare skull's ability to withstand the hit my>>helmet took...
As I have said before, I don't know where the idea came from that all>bike crashes were inevitably fatal before helmets came along, or that>helmeted cyclists who survive do so only because of their helmets.

I don't either (since I've yet to see anyone actually take that
position, which coincidentally has nothing to do with my crash).

Kinda hard to accuse others of hyperbole when you're tossing it around
that thick yourownself.

Bottom line to me - I know on any given ride / week / year it's very
unlikely I'll need to be wearing a helmet. My helmet (same model,
BTW) didn't touch the ground on my last accident as far as I know.
I've never really damaged a helmet before so I can say that wearing a
helmet for over 20 years hadn't done much for me before that one
accident. Doubtful I'll it anything (including the ground) with the
one I have now. But I wear it because I know that having an accident
where it would make a difference is a distinct possibility, and I'd
feel like a moron if I was hurt worse than I needed to be if I get
unlucky (again).

In my case, that paid off - no doubt about it. Would the accident
have been fatal? I certainly can't say it would have - but I can
assure you if anyone would offer me $1,000,000 to turn back time and
have the same impact without it I'd laugh at them.

Mark Hickey
Habanero Cycles
http://www.habcycle­s.com
Home of the $695 ti frame
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Just zis Guy 26 March 2005 21:33:34 permanent link ]
 On Thu, 24 Mar 2005 20:55:09 -0700, Mark Hickey <mark@habcycles.com­>
wrote in message <4g27415ddi08hrn2tr­3fip8bbbu5ppvjoo@4ax­.com>:
As I have said before, I don't know where the idea came from that all>>bike crashes were inevitably fatal before helmets came along, or that>>helmeted cyclists who survive do so only because of their helmets.
I don't either (since I've yet to see anyone actually take that>position, which coincidentally has nothing to do with my crash).

But all those helmets "saved their lives[tm]". Or rather, they saved
maybe a slightly worse headache. Or not, because the head would have
missed the ground entirely without the helmet, or the rider would have
taken fewer risks.
Kinda hard to accuse others of hyperbole when you're tossing it around>that thick yourownself.

Not really. There are two types of anecdote that get my goat here:
one is the "helmet saved my life[tm]" story, which is hard to swallow
when the population level statistics obstinately refuse to show any
effect on serious or fatal injuries. The other is the shroud-wavers'
favourite "if only he'd been wearing a helmet he'd still be here
today" - which generally turns out to be founded on the idea that
helmets work against two tons of metal moving at 30mph or more.
I can>assure you if anyone would offer me $1,000,000 to turn back time and>have the same impact without it I'd laugh at them.

Precisely: no controlled experiments, hence no certainties.

Guy
--
May contain traces of irony. Contents liable to settle after posting.
http://www.chapmanc­entral.co.uk

85% of helmet statistics are made up, 69% of them at CHS, Puget Sound
Add comment
Tom Sherman 26 March 2005 21:39:49 permanent link ]
 Guy Chapman wrote:
...> But all those helmets "saved their lives[tm]". Or rather, they saved> maybe a slightly worse headache. Or not, because the head would have> missed the ground entirely without the helmet, or the rider would have> taken fewer risks....

Or the h*lm*t saved the rider from a nasty scalp injury.

I put my h*lm*t in the same category as the full finger MTB gloves [1] I
wear while riding. They will not provide any significant protection
against broken bones or torn tendon/ligaments, but they do provide
significant protection against skin abrasion.

[1] They also make it much easier to operate twist shifters, due to
improved grip.

--
Tom Sherman - Earth (Downstate Illinois, North of Forgottonia)

Add comment
Mark Hickey 27 March 2005 03:01:40 permanent link ]
 "Just zis Guy, you know?" <uce@ftc.gov> wrote:
On Thu, 24 Mar 2005 20:55:09 -0700, Mark Hickey <mark@habcycles.com­>>wrote in message <4g27415ddi08hrn2tr­3fip8bbbu5ppvjoo@4ax­.com>:>
As I have said before, I don't know where the idea came from that all>>>bike crashes were inevitably fatal before helmets came along, or that>>>helmeted cyclists who survive do so only because of their helmets.>
I don't either (since I've yet to see anyone actually take that>>position, which coincidentally has nothing to do with my crash).>
But all those helmets "saved their lives[tm]". Or rather, they saved>maybe a slightly worse headache. Or not, because the head would have>missed the ground entirely without the helmet, or the rider would have>taken fewer risks.

Again, it's hard to throw stones when living in a glass house (with or
without a helmet). ;-)­ Yeah, no doubt some people DO overestimate
the effectiveness of their styrofoam hat - but going to the other
extreme with statements accusing "anyone" of thinking "all bike
crashes were inevitably fatal before helmets came along" isn't any
less inaccurate. The truth is in the middle, and that's where the
discussion should be. This shouldn't be a polarizing, "religious"
issue.
Kinda hard to accuse others of hyperbole when you're tossing it around>>that thick yourownself.>
Not really. There are two types of anecdote that get my goat here:>one is the "helmet saved my life[tm]" story, which is hard to swallow>when the population level statistics obstinately refuse to show any>effect on serious or fatal injuries. The other is the shroud-wavers'>favo­urite "if only he'd been wearing a helmet he'd still be here>today" - which generally turns out to be founded on the idea that>helmets work against two tons of metal moving at 30mph or more.

But sometimes they are right (perhaps my own accident was one case
where an unprotected head, even an infamously hard one, wouldn't be
able to withstand a 20+mph direct impact into the edge of a thin metal
mirror mount anchored to a 2+ ton truck). I dunno... but if we can
agree that someone who comes out of an accident in which their helmet
was trashed WITH a serious concussion would have been injured somewhat
worse without the helmet, we've made progress. I hope it helps to
know that I wasn't going 0.01mph faster or slower than I would have
been going without the helmet, BTW.
I can>>assure you if anyone would offer me $1,000,000 to turn back time and>>have the same impact without it I'd laugh at them. >
Precisely: no controlled experiments, hence no certainties.

Probably doesn't matter much since I doubt I'll ever get the chance to
turn down the million bucks... ;-)­

Mark Hickey
Habanero Cycles
http://www.habcycle­s.com
Home of the $695 ti frame
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Mark Hickey 27 March 2005 03:04:04 permanent link ]
 Tom Sherman <tsherman@qconline.­com> wrote:
Guy Chapman wrote:>> ...>> But all those helmets "saved their lives[tm]". Or rather, they saved>> maybe a slightly worse headache. Or not, because the head would have>> missed the ground entirely without the helmet, or the rider would have>> taken fewer risks....>
Or the h*lm*t saved the rider from a nasty scalp injury.

That was pretty much the extent of the "advantage" any helmet had ever
provided to me previously. I'd had a couple falls where I managed to
scrape up the helmet pretty well... I know I didn't hit the ground
hard enough to do any major damage to my thick noggin, but at the
least I would have scraped up my forehead.
I put my h*lm*t in the same category as the full finger MTB gloves [1] I >wear while riding. They will not provide any significant protection >against broken bones or torn tendon/ligaments, but they do provide >significant protection against skin abrasion.>
[1] They also make it much easier to operate twist shifters, due to >improved grip.

I've been thinking of switching to full-finger gloves because I
sometimes end up with blisters on my thumbs from after long, rocky
rides (from friction against the grips when the bike's bouncing all
over creation).

Mark Hickey
Habanero Cycles
http://www.habcycle­s.com
Home of the $695 ti frame
Add comment
Peter Keller 27 March 2005 07:04:09 permanent link ]
 On Sat, 26 Mar 2005 11:39:49 -0600, Tom Sherman wrote:
Guy Chapman wrote:>

Or the h*lm*t saved the rider from a nasty scalp injury.>
I put my h*lm*t in the same category as the full finger MTB gloves [1] I > wear while riding. They will not provide any significant protection > against broken bones or torn tendon/ligaments, but they do provide > significant protection against skin abrasion.>
[1] They also make it much easier to operate twist shifters, due to > improved grip.

I find that all very reasonable.
But do we need a law to force us to protect ourselves from bumps and
abrasions? That is what Nanny State New Zealand has done to us --
What will they think of next? A law to force us to wear shoes whenever
going outside?

Peter

--
If you are careful enough in life, nothing bad -- or
good -- will ever happen to you.

Add comment
Just zis Guy 27 March 2005 22:43:22 permanent link ]
 On Sat, 26 Mar 2005 16:01:40 -0700, Mark Hickey <mark@habcycles.com­>
wrote in message <o2qb415cm1veu05u4a­kmr9lejd0kta4vm5@4ax­.com>:
But all those helmets "saved their lives[tm]". Or rather, they saved>>maybe a slightly worse headache. Or not, because the head would have>>missed the ground entirely without the helmet, or the rider would have>>taken fewer risks.
Again, it's hard to throw stones when living in a glass house (with or>without a helmet). ;-)­ Yeah, no doubt some people DO overestimate>the effectiveness of their styrofoam hat - but going to the other>extreme with statements accusing "anyone" of thinking "all bike>crashes were inevitably fatal before helmets came along" isn't any>less inaccurate. The truth is in the middle, and that's where the>discussion should be. This shouldn't be a polarizing, "religious">issue.

Yes, well, as usual the general and the specific are getting a bit
mixed up here, and clarity is probably suffering as a result. I don't
say that no helmet has ever prevented an injury, just that the lack of
any effect in whole populations demonstrates that, at the level of
serious injuries at least, they appear to cause as many as they
prevent. I know for certain sure that I ride my tourer a lot slower
and more nervously when not wearing a helmet, and I am probably better
informed on the limitations of helmets, and more sceptical of their
abilities, than most. Risk compensation is real.

And to be fair the stuff hereabouts is definitely hedged with more ifs
and buts than the stories in the newspapers. But my concern is
genuine: it seems to me that the effect of newspaper hyperbole in
particular is (a) to paint the picture of cycling as a dangerous
activity, which it is not, and (b) to paint helmets as a magic
preventer of massive injury, which they are not. This latter is
actively dangerous as people /will/ risk compensate, and if they do so
based on a grossly exaggerated idea of effectiveness, that can only be
bad.

Actually it seems that with helmets, just as with seat belts and
especially ABS brakes, the rider's assessment of efficacy is so
accurate that their subconscious increased risk taking seems to
balance it exactly.
sometimes they are right (perhaps my own accident was one case>where an unprotected head, even an infamously hard one, wouldn't be>able to withstand a 20+mph direct impact into the edge of a thin metal>mirror mount anchored to a 2+ ton truck).

Yes, sometimes they are. But would you have been riding at that speed
in that place without the helmet? Maybe you would. A lot of people
are very open about taking more risks - often significantly more risks
- when helmeted. Luckily cycling is fundamentally safe so the number
of actual crashes remains small.
if we can>agree that someone who comes out of an accident in which their helmet>was trashed WITH a serious concussion would have been injured somewhat>worse without the helmet, we've made progress.

It depends. The broken duck-tail, as per a previous post? Lots of
people go down on their backs and never hit their heads, certainly not
so as to cause serious injury, it's a well-conditioned reflex. Those
who do suffer serious injury falling backwards are usually drunk, as
far as I can tell. I've gone over the bars wearing a leather hairnet
helmet, and I've been wiped out by a car wearing a woolen hat. Maybe
the pain would have been less with a helmet, but there is no doubt
that my MK. 1 skull did most of the protecting in both cases. It's
well adapted for that. I look, too, at the specs for helmets, and see
that they are designed to withstand an impact equivalent to tripping
while running, or a fall from a slow-moving bike. That's the kind of
impact skulls have evolved for.

In other words, I don't see any justification for the massive hype
that surrounds them. I don't really care what people wear, except in
as much as my benighted government has said it views, in effect, every
helmet wearer as a vote for compulsion, what I care about is that
people (not you) are making cycling out to be a dangerous activity
which requires special protective equipment, and making helmets out to
be some magic talisman capable of protecting us from road traffic
crashes.
Precisely: no controlled experiments, hence no certainties.
Probably doesn't matter much since I doubt I'll ever get the chance to>turn down the million bucks... ;-)­

Heh! :-)­ Frankly I have no desire to repeat any of my crashes either
- including the one where I wiped out on a diesel slick while riding
my recumbent and couldn't sit down for a week.

Guy
--
May contain traces of irony. Contents liable to settle after posting.
http://www.chapmanc­entral.co.uk

85% of helmet statistics are made up, 69% of them at CHS, Puget Sound
Add comment
Stephen Harding 27 March 2005 23:33:33 permanent link ]
 Just zis Guy, you know? wrote:
Now, while it seems that helmet use is not correlated with cyclist> safety in any country in the world, it does appear to be the case that> more people cycling /does/ increase safety. And so do things like> laws reversing the burden of proof where a driver hits a cyclist or> pedestrian in a residential neighbourhood.

Care to elucidate?

More people bicycling means more people in favor of
bike-centric, or at least bike-friendly infrastructure?

More motorists at ease with bicyclists using the roadways?


SMH

Add comment
Just zis Guy 28 March 2005 00:14:34 permanent link ]
 On Sun, 27 Mar 2005 14:33:33 -0500, Stephen Harding
<harding@cs.umass.e­du> wrote in message
<42470a91@news-1.oi­t.umass.edu>:
Now, while it seems that helmet use is not correlated with cyclist>> safety in any country in the world, it does appear to be the case that>> more people cycling /does/ increase safety. And so do things like>> laws reversing the burden of proof where a driver hits a cyclist or>> pedestrian in a residential neighbourhood.
Care to elucidate?>More people bicycling means more people in favor of>bike-centric, or at least bike-friendly infrastructure?>Mor­e motorists at ease with bicyclists using the roadways?

There are several reasons suggested, all of which probably apply to a
greater or lesser extent. I'm guessing there are other factors at
work as well.

- drivers more used to seeing cyclists, so are looking for them
- drivers more likely to have experience of cycling, so know how much
space a cyclist really needs (i.e. more than a non-cyclist tends to
imagine)
- more journeys by bike = fewer by car, reducing the number of cars

Guy
--
May contain traces of irony. Contents liable to settle after posting.
http://www.chapmanc­entral.co.uk

85% of helmet statistics are made up, 69% of them at CHS, Puget Sound
Add comment
Just zis Guy 28 March 2005 02:35:57 permanent link ]
 On 27 Mar 2005 14:27:54 -0800, frkrygow@yahoo.com wrote in message
<1111962474.669297.­97080@g14g2000cwa.go­oglegroups.com>:
To me, any comparison between seat belts and bike helmets is specious.>On the one hand, we have a safety measure which lasts as long as the>vehicle, has approximately zero cost in terms of vehicle price or>convenience, and is designed and certified using very realistic tests

More similar than you think: no country in the world can show any
reduction in road traffic fatalities from compulsory seat-belt
legislation. In the UK mandatory the seat-belt law was preceded by a
report commissioned by the Department of Transport which showed
exactly this - it was buried - and followed by (a) no reduction in
road traffic fatalities and (b) the largest recorded rise in
pedestrian, cyclist and rear passenger fatalities. In other words,
drivers were at fractionally (but only fractionally) lower risk but at
the cost of substantially increased risk to others.

Guy
--
May contain traces of irony. Contents liable to settle after posting.
http://www.chapmanc­entral.co.uk

85% of helmet statistics are made up, 69% of them at CHS, Puget Sound
Add comment
 

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GYXU > Cycling > Broken helmets [was: Man dies after biking into retaining wall] 28 March 2005 02:35:57

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