Culture of Fear

IMO - great video from Copenhagenize's Mikael Colville-Andersen at TEDx in Copenhagen last week.

I like his perspective.

http://video.tedxcopenhagen.dk/video/911034/mikael-colville-andersen

www.bikebike.ca

Forums: 

Didn't have time yet

to listen to the full item. But, seems to be saying that wearing a helmet does not make it any safer to ride a bike and the benefits of a helmet are outweighed by the number of people who won't cycle if helmet usage is mandatory.

In other words, on a total population study, the health benefits of getting more people to ride (because they don't have to wear helmets) is greater than the health benefits of forced helmet usage.

I suspect we'll continue to have this debate. I for one believe that high sticking in hockey went up dramatically when everyone started wearing helmets and face shields (because I've played with and without). But the result of that was fewer concussions and fewer cuts overall although I've had my share of cuts with and without helmets and face gear.

There is a reason that they have been mandated in the tours and other races and I've personally seen my share of busted up helmets along with people who are still walking around who wouldn't be.

It's like seat belts, air bags, collapsible steering columns, collapsible car components, safety glasses etc. etc. etc. Heck, the average car today could be priced at half of what it is if we didn't have all that "sissy" protective gear in it.

And in my view helmets aren't the issue about cycling, infrastructure and safe pathways and education are much larger issues.

Loved the bit about following the money.

I liked the bit about how wretchedly inaccurate the testing model for cycling helmets is, and how it only tests one point of impact (the crown of the head), which isn't even the most common point of impact for cyclists.

When he got to the bit about funding for helmet lobbyists coming from the automobile manufacturers, it really put things in a new light. The bike is competition, and competition needs to be attacked.

Combine that with the total market failure of the automobile helmets he discusses, despite some optimistic numbers from the analysts, and it really starts to look like the real agenda is killing transportation alternatives to force people to buy cars.

It's just the bicycle's bad luck that this can be done by pretending to want cyclists to be "safer."

A helmet saved my life!

Stolen from http://www.cyclehelmets.org/1019.html Go there for references.

"Many people who wear helmets can relate their experience of a crash which leads them to believe that a helmet 'saved their life'. This is a very common experience - very much more common, in fact, than the actual number of life-threatening injuries suffered by bare-headed cyclists. Yet there is no evidence that helmets save lives or prevent serious injury at all across cyclists as a whole [1].

"For example, in the state of Western Australia where bicycle helmets have been mandatory for all ages since July 1992, the annual cyclist death toll from 1987 to 1991 (pre-law) averaged 7.6 fatalities per year. From 1993 to 1997 (post-law) it was 6.4 fatalities per year, representing a 16% reduction [2]. However, Government cycling surveys show cycling declined in Western Australia by approximately 30% during the 1990s following mandatory helmet law enforcement [3]. Thus, relative to cycle use, fatalities went up, not down.

"Why this contradiction?
These facts appear contradictory and counter-intuitive, but there are several possible explanations.

"There is a good deal of circumstantial evidence that helmeted cyclists are more likely to crash, and data from one study [4] suggests that those wearing a helmet are more than 7 times likely to hit their heads if they do.

"Many falls result in arm and shoulder impacts that keep an unhelmeted head just clear of the ground. A helmeted head, being twice as big and a little heavier, is more likely to hit something.

"Another possibility concerns so-called 'risk compensation' - the tendency or willingness of people to take greater risks when they feel better protected. There is clear evidence of this, particularly amongst children, and it is quite likely to be a subconscious reaction. If people take greater risks (such as riding in places requiring a higher level of skill) due to a misplaced belief that their helmet makes them safer, they could be more likely to experience a crash.

"The movement of a helmet or the irritation to the head that many people experience might also affect balance or concentration at a crucial moment.

"But my helmet broke - isn't that proof?
A helmet is a fragile piece of equipment. On seeing a damaged one, it is easy to assume that a serious injury has been prevented. Cycle helmets split very readily, and often at forces much lower than those that would lead to serious head injury. Helmets work by absorbing impact energy through the crushing of an expanded polystyrene liner. Once compressed the liner stays compressed. It does not bounce back to its original form like reusable helmets for some other activities. If a helmet splits before the liner has partially or fully compressed - and this is often the case - then it has simply failed. It will not have provided the designed protection and may in fact have absorbed very little energy at all.

"If a helmet splits after fully compressing, it will have reduced initial forces to the head, but thereafter it will afford no further protection and any residual energy will be transmitted to the brain. Cycle helmets fail catastrophically, not gradually, so it is a mistake to believe that they provide useful, if reduced, protection at higher velocities. In high impact crashes, such as most that involve motor vehicles or fixed vertical objects like concrete barriers and lamp posts, the forces are so great that a helmet will compress and break in around 1/1000th of a second. The absorption of the initial forces during this very short period of time is unlikely to make a significant difference to the likelihood of serious injury or death.

"Helmets provide some protection when there is only partial compression of the liner and they may work better if in addition there is no split or breakage. This is most likely to be the case in crashes that result from low-speed falls without any third party involvement and where, without a helmet, injury would be relatively minor. If the liner suffered no compression, the helmet almost certainly played no role in preventing injury and without the helmet there would have been no injury of consequence anyway."

After spending many hours

researching the subject, I decided to not wear a helmet for pretty much the reasons stated in pinkrobes post. As stated in this paragraph:
Cycle helmets fail catastrophically, not gradually, so it is a mistake to believe that they provide useful, if reduced, protection at higher velocities. In high impact crashes, such as most that involve motor vehicles or fixed vertical objects like concrete barriers and lamp posts, the forces are so great that a helmet will compress and break in around 1/1000th of a second.

They don't offer much protection at speed,which is when we need them the most. But none of the articles I read while researching, mentioned at which speed, or what speed the combined forces would be equal to. Such as car going 30kmh hits bike going 20kmh = combined speed of 50kmh. or bike going 50kmh hits light pole.
I'd like to see a study showing at what speed various helmets fail at. I think for those who chose to wear a helmet, it would be invaluable information, when shopping for a helmet to wear.

Too many factors.

First off, ALL helmets "fail", that is their job. The material crushes which lessens the impact. Now the question is whether in doing its job the helmet will help you and that is depenedent upon your head speed, what you hit, how you hit, position of your body, position of your neck, whether you get run over after etc.

There are just too many variables involved in an accident to state that a helmet will "prevent" an injury. But, you can be assured that it will decrease the decelerative forces that your brain undergoes and that is its role. At higher speeds it probably won't decrease the force enough to keep you alive but at lower speeds it likely will.

Riding a bicycle or any other activity is all about risk management. When you engage in the activity you increase your risk. Then, you can do things that will decrease your risk. For the most part it is up to each person to decide where they want to be on the risk continuum.

Two of my helmets experienced

Two of my helmets experienced catstropic failures. Cracked clean through. No crashes... I spotted one and coworker spotted the other. So I can't say a helmet has saved my life, but after reading this article I can say a defective helmet may have killed me.

I like my helmet because

I really like the effect the helmet (and liner) has on my hair after I take it off.
Nothing quite says bad-azz like major helmet head hair! Good thing I'm insanely handsome (lol)

Tru dat

Same here! If I didn't have a helmet, I'd have nowhere to put my helmet light. Maybe my ear, but I don't think that would work very well.

Had many customers, whose helmet prevented a greater injury.

Had many customers, whose helmet prevented a greater injury and have told us about them. New helmets are lighter and have better airflow. I think a lot of people look at helmets as heavy and too hot for riding because they have an old helmet with little airflow and in truth the styrene is so piled that it wouldn't help them if they crashed anyways. A helmet may not save you when the car hits you hard but when you slide out on a tight corner or a dog runs in your path and yo are forced to take emergency action at least you don't have a concussion.

I agree

I was glad to be wearing a helment in an emergency. While riding my chain broke and i ended up crashing hard, with my head hitting the pavement. My helmet did in fact crack and I was grateful it was not my head hitting the pavement. After that I will always wear one, *just in case*

A Cracked helmet didn't necessarily protect you.

Helmet foam protects by being crushed, which slows the deceleration of the skull and turns a sharp shock into a slower, longer pressure gradient.

When it splits or cracks, it doesn't dissipate even a small fraction of the energy it can dissipate by crushing. Your skull just passes through the crack and smacks into whatever cracked the helmet without the gentle deceleration the helmet is supposed to provide.

A helmet that worked properly in an accident would have a permanent depression at the point of impact, but would still be in one piece.

If your accident was so severe that the helmet first crushed and then cracked, then the _duration_ of the protection was probably too short to contribute reducing injury.

A theatrically shattered bike helmet was probably no protection at all.

I disagree

And strongly. The crushing of the inner linner PROVES that the helmet did its job and helped to avoid or minimize internal brain damage. If the outer shell has cracked then that's evidence that the contact was more severe.

Case in point, my daughter, while snow boarding managed to fall onto the back of her head and crack the outside of her helmet from the base to the top, one long crack. Very little noticed deformity with the inside of the helmet but some. Snow board and skiing helmets are more robust than cycling helmets so it took a lot of force to do that. She didn't even know it happened! But, she has hit her head before and not have the helmet crack and knew it.

While putting a helmet on a person and swacking them with a baseball bat would prove the effectiveness of a helmet to a non-believer I still wouldn't advocate it.

X2

There are helmets (full face and BMX) that are designed for multiple impacts. But these still have to be inspected for cracks and for the interior becoming loose. It sucks that you have to buy a new helmet but hopefully it is your only cost.

It really sucks

When it is a Troy Lee designs Motorcycle helmet costing around $800 that protected you. Well, it is good that it protected you but with the side impacted and scraped up and the foam a bit compressed on the inside it sucks that I had to purchase another one. Oh and at that I blacked out for a microsecond - although who really knows when you go down at 100KPH+ in a tight curve.

I just dont know what helmets you have..

I have two bike helmets and both of them consist of high density foam and a plastic shell glued to the outside of it to make it look perty. Both are high end, over $100 brand names you would all recognize. Every helmet I have ever looked at is the same.

So, that said, I am dying to know what kind of helmets you guys are talking about because these helmets dont crack. The plastic glued to the outside may of course, hell... mine has and I just crazy glue it back down. The high density foam underneath wont bust unless you jump on it or run over it with your car. It dents. You can smack it against a pole and it dents a bit.

If you have foam core helmets that are breaking... you clearly got a dud from the factory.. there is just no two ways around that. I have kicked the crap out of Troy Lee over 17 yrs. I mean literally. I have tossed it on the ground, its fallen to the ground, I have hit things with it out of anger/frustration, I have hit the ground with it... its still solid as the day I bought it except with some little tiny flat spots in the high density foam where the impacts took place. It's scuffed, cracked and broken on the outer shell.

I'm dying to know what all this talk is about breaking/cracking helmets is about. I am definately missing the boat on it. We went through all this in that thread I started about helmets a few months ago and as usual... passionate. lol. Fiberglass helmets get soft spots and spider web outwards from the impact zone so they become useless (motorbike helmets, kayak helmets) and snowboard helmets are plastic with foam inside so they will never break. I just dont get it. Breaking, cracking helmets does not compute.

Edumacate me. ;)

More than once.

Lets see, my first post was about my daughters "Red" snowboard helmet. Crack in the plastic (and underlying foam) extending from the base up to the crown. She smucked something, "sometime". She is an aggressive snow boarder and I've seen her hit her head a few times. Anyway, purchased new helmet.

Fast backward (in time), son who is an avid bike rider has gone through 2 helmets. One from "stunting" and hitting a parked car when the headset of a borrowed bike came loose :). Helmet foam crushed, outside plastic cracked. Now that would have been a less expensive helmet but still CSA. Then another daughter, carrying a CSA approved helmet after skating, slipped and the helmet smucked onto the ice, result was that the plastic outer surface was cracked (cold?).

Fortunately, all the way through, starting with my "Bell Biker", including the "V1 Pro" (which I found the other day, need to ride with it for fun some time) and now helmets cost far too much I haven't personally had a problem but others close to me have.

helmets

I've had two bicycle helmets crack right through from crashes. They are foam construction with plastic shell. Needless to say I replaced them.

It is my understanding that a foam type helmet are designed for single impacts and should be replaced after one impact, even if there is no visible damage. A hard shell helmet with a harness(like a climbing helmet) can take multiple impacts.

From Wikipedia "Bicycle helmet" entry:

"The Snell Memorial Foundation recommends that any helmet that has sustained a substantial blow should be discarded and replaced, including any helmet involved in a crash in which the head has hit a hard surface or in which a fall has resulted in marks on the shell"

Here is the link to the Snell FAQs on helmets:

http://www.smf.org/

Same safety, less weight

The $400 road helmet has the same safety rating as the $40 helmet. You are paying for design costs, better retension system, size runs, lighter weight. Personally, if it fits and is comfortable you'll wear and that is the important thing. IF you are worried about price, wait until the Bow Cycle Blue Light sale in spring and get it 40 to 50% off.

No helmet laws

I totally agree that helmet *laws* are a stupid, misguided load of crap.

But, I'm going to keep wearing my helmet. I'm quite sure I wouldn't have "just" cracked my eye socked and fucked up half my face in the one "big" crash I've had if I hadn't been wearing a helmet. To each their own, of course...and the type of cycling is of course a factor: tootling around town isn't the same as descending treed singletrack as fast as possible.