Lexus GS Earns "Good" Rating for
Side Impact
The Lexus GS, equipped with
standard side curtain airbags, earned the Insurance
Institute for Highway Safety's top rating of good
in a crash test that simulates a side impact from
an SUV or pickup truck at 31 mph.
Ratings
for the Lexus in the Institute's frontal offset
and rear tests were released earlier. This car
earned a good rating in the frontal test but is
rated marginal for its seat/head restraint design
for protection in rear impacts.
"The [Lexus] GS is one of three large luxury
cars we've tested that earns the top rating for
both front and side crash protection," said
Institute president Adrian Lund. "But the
GS isn't a 'Top Safety Pick' because of its marginal
rating in the rear test. Only the Audi A6 earns
that designation among the large luxury cars that
we [IIHS] have evaluated."
Low injury measures in side impact test
Beginning with 2006 GS models manufactured after
August 2005, changes were made to the front seat-mounted
torso airbags to ensure better protection of the
abdomen in a side impact crash. In the Institute's
test, injury measures recorded on crash test dummies
in the driver seat and rear passenger seat were
low in every category.
"The heads of both dummies were protected
from being hit by any hard structures, including
the intruding test barrier," Lund said. "Side
airbags, especially those designed to protect
the head, are key in reducing risks to people
in side impacts. The Institute's test represents
a crash in which the striking vehicle has a tall
front end like a pickup or SUV, so head protection
is critical."
Toyota requested the side test of the GS earlier
than the Institute's normal test schedule.
"More manufacturers are requesting tests
when they have new designs they expect to perform
well," Lund said. "We encourage this
because it means the test results will be released
earlier, as consumers are beginning to shop for
new models. When we do conduct tests early, the
automakers provide reimbursement
for the cost of the vehicles."
Side impact tests of other large luxury car models
are planned for later this year.
How the side impact test is conducted
A vehicle's overall side evaluation is based on
performance in a crash test in which the side
of the vehicle is struck by a moving barrier representing
the front end of a pickup or SUV. Ratings reflect
injury measures recorded on two instrumented SID-IIs
dummies, assessment of head protection countermeasures,
and the vehicle's structural performance during
the impact.
Injury measures obtained from the two dummies,
one in the driver seat and the other in the rear
seat behind the driver, are used to determine
the likelihood that a driver and/or passenger
in a real-world crash would have sustained serious
injury to various body regions. The movements
and contacts of the dummies' heads during the
crash also are evaluated. Structural performance
is based on measurements indicating the amount
of B-pillar intrusion into the occupant compartment.
The
Insurance Institute for Highway Safety is a nonprofit
research and communications organization funded
by auto insurers. For over 30 years the Insurance
Institute for Highway Safety has been a leader
in finding out what works and doesn't work to
prevent motor vehicle crashes in the first place
and reduce injuries in the crashes that still
occur. The Institute's research focuses on countermeasures
aimed at all three factors in motor vehicle crashes
(human, vehicular, and environmental) and on interventions
that can occur before, during, and after crashes
to reduce losses.
(Source:
Insurance
Institute of Highway Safety) |