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SUV accidents preventable with adjustments
Proving
rollover risk
Rollover
deaths predictable
The
SUV battle
SUV Facts
SUVs average two tons - 900 pounds heavier than passenger cars. In head-on
collisions and side impact collisions where the SUV hits a passenger car,
fatality rates are very high. The SUV carries much more momentum into any
accident because of its added weight.
Tread width does not substantially change the likelihood of a rollover accident.
When a car turns tightly and at high speeds, momentum carries it forward and
away from the turn. In a right turn, that pressures the front left tire. The
rear right tire can be carried off of the road entirely. With SUVs and their
higher center of gravity, that momentum and lift can carry over, causing the SUV
to continue to pivot and rollover.
Guardrails have been shown to work only with a very stiff
design or a very flexible one. In between designs show a poor
history of keeping SUVs that are flipping over on the road.
Nearly 10,000 motorists were killed in rollover accidents in
1998. In SUV's nearly 60% of fatalities involved rollover
crashes compared with a mere 20% in passenger vehicles. SUVs
are three times as likely as passenger vehicles to flip over.
Motorists sense speed in vehicles built lower to the ground.
SUVs seem to travel slower since the visual perception is
higher on the road. Experts have testified that 60 mph in a
passenger vehicle feels similar to 40 mph in an SUV. Due to
the peculiarity, SUV drivers can inadvertently take turns too
fast.
Tests have shown that roofs of SUVs crush more easily than in
passenger vehicles because they are higher. The roofs of SUVs
impact the ground roughly instead of rolling through.
Motorists are often fatally crushed in SUV rollover crashes.
Studies have shown that a wider track width, improved
suspension and side airbags can greatly increase the safety
performance of SUVs.
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