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Tests on pedestrian airbags show they
would reduce casualties from accidents -
17th April 2009
New technology is being developed that would reduce deaths and
serious injuries resulting from
pedestrian accidents on our
roads.
Currently pedestrian accidents are responsible for almost 700
road deaths each year in the UK, with around 6,400 other
receiving serious injuries.
For many years the development of driver and passenger safety
has been the focus of reducing casualties from
car accidents,
with very little consideration given to
pedestrians injured in
accidents.
The new safety measures to help protect pedestrians works by
detecting when the car is about to be in a collision with a
pedestrian, it automatically raises the rear of the bonnet and a
large airbag is deployed in front of the windscreen.
The pedestrian’s injuries are reduced by the raised bonnet
absorbing some of the impact and the airbag cushioning impact
with the windscreen and its frame.
The research which forms part of the European Union funded
Integrated Project on Advanced Protection Systems (APROSYS)
being led by Roger Hardy of the Cranfield Impact Centre at
Cranfield University, carried out tests on the new technology
using a Fiat Stilo with encouraging results.
In tests a standard pedestrian dummy was involved in simulated
car accidents which resulted in Head Impact Criterion (HIC)
scale score of around 1,000.
When the new safety technology was added, pedestrian dummies
hitting the bonnet recorded scores between 234 and 682, whilst
the windscreen airbag scored between 692 and 945.
Also being designed is a windscreen mounting that has a Z-shaped
section of metal separating the windscreen from its frame. On
impact this cushions the impact with estimates suggesting it may
reduce HIC scores by up to 50%.
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