29 March 2010

Airbags Instead of Bike Helmets



I received an email from a friend at the Dutch Cyclists Union - Fietsersbond. In the subject line it read, "Airbags instead of bike helmets".

Back in June 2008 I blogged about Bicycle Airbags on Cars and about how the Danish Cyclists Federation were interested in getting the Traffic Safety Board to investigate a Dutch study that suggested external airbags on cars would save cyclists' lives. That was the last we heard of it in this country.

But the Dutch... oh, the Dutch... Undefeated World Champions in Bicycle Advocacy and Societal Rationality... (no, let's not forget the Hungarians...) they've kept at it. The idea of airbags on cars to protect cyclists started as a kind of a "what if..." story in the Fietsersbond's magazine a few years ago.

Now the idea is nearing fruition. In a press release from early March 2010 the Fietsersbond boldy declares that cars will be equipped with airbags for cyclist collisions by 2015.
Beans Bicycle Air Bag
The Dutch do their homework. Like any self-respecting advocacy org they have traffic consultants dedicated to scientific issues and they know that bicycle helmets don't have a lot going for them as far as effectiveness goes. They know that the mere promotion of helmets reduces cycling and they've read the chilling results of the mathematician Professor Piet de Jong's study about the heavy price helmet laws inflict on countries and regions.

So, in an inspired moment of rationality, they decided to put forth the idea of putting air bags on the machines that cause the damage - the cars. No ignoring the bull here. Place the responsibility where it belongs.

The airbags for cars idea met a great deal of enthusiasm in the Netherlands. So much so that funding has been given to test the idea.

And the email I recieved today was about the Dutch Transport Minister pledging €1 million more for further research. Here's the minister saying stuff about it in Dutch:


The crash test in the film is one of a series to determine where cyclists land on cars in order to figure out where the airbags should be placed. The next step is the completion of a detection system for pedestrians and cyclists. Then there is a test on the streets of Amsterdam.

"Thanks to this detection system, an airbag will be activated in the event of a collision so as to considerably cushion the impact of a cyclist’s head on the windscreen. The cyclist will not die from his injuries, and will have a good chance of coming out virtually unscathed."

"The test in Amsterdam will take a year. The researchers of Autoliv and TNO Automotive want to know if the sensors on the front of the car will function well under all weather conditions. The test car will be fitted with a button which the driver must push in special situations, such as a collision or near collision. The recordings of the detection system’s cameras will be saved. The researchers want to analyse the observations of the system. A collision sensor is fitted in addition to the sensors - the cameras - that will recognise cyclists. This collision sensor registers when a cyclist is indeed hit and an airbag should be activated. These extensive tests are needed in order to make sure that the system is fully reliable. The airbags should only be activated when a cyclist or pedestrian is hit. It is not supposed to activate when the car hits a pigeon or post."

Mandatory Airbags on Cars?
‘The airbag is expected to be taken into production in 2015, but that of course depends on the wishes of consumers and car manufacturers’, says Van de Broek of TNO.

‘That’s an amazing result’, says Theo Zeegers who is responsible for the project on behalf of the Fietsersbond. ‘We’ve come much further than we’d ever hoped for.’ The costs involved are as yet unknown, but Zeegers expects it will be a couple of hundred Euros per car. He pleads for the airbag system to become a compulsory part of each new car. ‘Just compare it to the compulsory introduction of the catalytic converter.’

A compulsory airbag on the windscreen will add a couple of hundred Euros to a car’s price tag. But what does it yield? According to Zeegers, it may save dozens of cyclists’ lives in the Netherlands. In terms of the EU we are talking hundreds of lives."

The airbag system is a big success for the Fietsersbond. ‘In collisions with passenger cars in which the cyclists dies, it is nearly always the head injuries that are fatal. That’s why we’ve been busy for years trying to find out how we can make cars safer for cyclists’, says Zeegers.

TNO carried out an exploratory study on the instructions of the Fietsersbond four years ago. They expected the shape of the front of a car to largely determine the seriousness of the injuries. Ultimately however, it emerged that airbags on the exterior of a car may save many a cyclist’s life. But they have to be in the right position.

The TNO studies showed that cyclists often benefit little from an airbag system specifically developed for pedestrians. In a collision, pedestrians end up with their heads on the hood or the lower part of the windscreen. That is often different for cy-
clists however. Their heads usually do not hit the hood, but the upper part of the windscreen. If they are unlucky, their heads even hit the hard metal window stiles. This is where airbags for cyclists should be fitted.

Dead or dizzy
So we know that an airbag can drastically cushion the impact. But by how much? Researchers express the force of the impact in Head Injury Criterion (HIC). This HIC value should stay below 1,000. For the elderly, this value should even be below 600. During computer simulations carried out by TNO in 2008 it emerged that in a collision at 30 kilometres per hour, the cyclist endures an HIC value of 3,700. Hardly anyone would be expected to survive such an impact. With the airbag however, the HIC value dropped to 590. All a cyclist will suffer from in that case is a headache and dizziness.

Here's a link, in Dutch, to the Fietsersbond's page about this exciting project.

8 comments:

Kim said...

Mikael, you have got the date wrong, 1st April isn't until Thursday!

Taliesin said...

Bring on the airbags, since watching that makes me think about getting a helmet.

Kiwehtin said...

Of course, this also all applies to people hit by cars while walking... Same physics (except, perhaps, for slight differences in elevation), same facts and logical arguments apply for whatever safety measures are proposed.

Green Idea Factory said...

There is the chance that drivers will be lulled into yet another false sense of security by this system. John Adams, Emeritus Professor of Geography at University College London has an excellent blog called Risk in a Hypermobile World where he, among other things, questions the hype about the effectiveness of seat belts. See http://john-adams.co.uk/?s=seatbelts

In other words, testing shmesting! Fietsersbond mentions a few dozen lives saved. How about the real world? Is this projection based on any possible increased risk taking by drivers?

(I copied the first paragraph from http://www.copenhagenize.com/2009/10/volvo-tries-to-brake-for-pedestrians.html)

Claudio Olivares Medina said...

I Think this idea could make the motorist be less aware about citizens outside the car.

Cait said...

Looking at it, are we talking *specifically* about the risk of head injuries? because the impact would have already taken place at the bumper or side of the car before the head smashed delightfully in to the winscreen.

And no, I couldn't watch that video (aargh).

Whispering a small thing about helmets, I know it's controversy city, but when I was pushed off my bike by a turning van a) it was against the side odf the van so airbags would have made no difference and b) I cracked my head on the road and instead of having a horrible case of concussion or worse, I got a lot of little bruises spread across my head. Because I was wearing a helmet.

The point of that subjective war story is that it is highly unlikely that tests would be able to reduce the risk from being bashed by a vehicle; serious body injuries are still almost inevitable and side impacts from turning vehicles will remain a difficulty.

Drunk Engineer said...

Airbags are explosive devices.

The only thing worse than getting hit by a car, is getting hit by a car with explosive device on the front bumper.

Anonymous said...

I support anything that increases the cost of car ownership.

Moreover, so many different safety advances - airbags, anti-lock brakes, traction control, side-impact airbags - these all make the driver feel safer (driver faster, drive carelessly). I safety feature for their potential victims? It won't cause as much callousness as those occupant focused safety enhancements.