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The Insurance Institute for Highway Safety (IIHS) is a
U.S. The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territori ...
nonprofit organization A nonprofit organization (NPO) or non-profit organisation, also known as a non-business entity, not-for-profit organization, or nonprofit institution, is a legal entity organized and operated for a collective, public or social benefit, in co ...
funded by auto
insurance companies Insurance is a means of protection from financial loss in which, in exchange for a fee, a party agrees to compensate another party in the event of a certain loss, damage, or injury. It is a form of risk management, primarily used to hedge ...
, established in 1959 and headquartered in
Arlington, Virginia Arlington County is a county in the Commonwealth of Virginia. The county is situated in Northern Virginia on the southwestern bank of the Potomac River directly across from the District of Columbia, of which it was once a part. The county is ...
. It works to reduce the number of motor vehicle traffic collisions, and the rate of injuries and amount of property damage in the crashes that still occur. It carries out research and produces ratings for popular passenger vehicles as well as for certain consumer products such as child car booster seats. It also conducts research on road design and traffic regulations, and has been involved in promoting policy decisions.


Frontal crash tests

The IIHS evaluates six individual categories, assigning each a "Good", "Acceptable", "Marginal", or "Poor" rating before determining the vehicle's overall frontal impact rating.


Moderate overlap frontal test

The moderate overlap test (formerly frontal offset test), introduced in January 1995, differs from that of the U.S. government's
National Highway Traffic Safety Administration The National Highway Traffic Safety Administration (NHTSA ) is an agency of the U.S. federal government, part of the Department of Transportation. It describes its mission as "Save lives, prevent injuries, reduce vehicle-related crashes" rel ...
(NHTSA)
New Car Assessment Program A New Car Assessment Program (or Programme) is a government car safety program tasked with evaluating new automobile designs for performance against various safety threats. History The first NCAP was created in 1979, by the United States Nation ...
(NCAP) in that its tests are offset. The NHTSA standards require vehicles to provide no injuries to occupants after a head-on impact into a fixed barrier at , not at an angle. The IIHS test exposes 40% of the front of the vehicle to an impact with a deformable barrier at approximately . This offset test represents approximately 0.04% of all car crashes and "is the equivalent of running a vehicle into a parked car at . As with the NHTSA's frontal impact test, vehicles across different weight categories may not be directly compared. This is because the heavier vehicle is generally considered to have an advantage if it encounters a lighter vehicle or is involved in a single-vehicle crash. The IIHS demonstrated this by crashing three midsize sedans with three smaller "Good" rated minicars. The three minicars were rated "Poor" in these special offset head-on car-to-car tests in 2009, while the midsize cars rated "Good" or "Acceptable". In December 2022 the IIHS updated the moderate overlap test to include a second
crash test dummy A crash test dummy, or simply dummy, is a full-scale anthropomorphic test device (ATD) that simulates the dimensions, weight proportions and articulation of the human body during a traffic collision. Dummies are used by researchers, automobile ...
seated behind the driver. The IIHS said that the advanced seat belt protections found in the front passenger seats, including crash tensioners and load limiters, should also exist in the rear passenger seats. Out of 15 small SUVs subjected to the new test, nine received an overall rating of poor due to high rear passenger injury measurements to the head, neck and chest.


Small overlap frontal test

On August 14, 2012, IIHS released the first results for a new test, called the "small overlap front test." The new test, which is used in addition to the 40% offset test introduced in 1995, subjects only 25% of the front end of the vehicle to a 40 mph impact against a solid, rounded-off barrier. As a result, it is far more demanding on the vehicle structure than the 40% offset test. In the first round of tests, composed of 11 midsized luxury and near-luxury vehicles, most vehicles did poorly; only three vehicles received "good" or "acceptable" ratings. The rating system is similar to the 40% offset, but has some key differences: hip/thigh and lower leg/foot ratings replace individual ratings for each leg and foot, and a full score cannot be attained without deployment of front and side curtain airbags (due to the severe side movement often resulting from this test). A
Medical College of Wisconsin The Medical College of Wisconsin (MCW) is a private medical school, pharmacy school, and graduate school of sciences headquartered in Milwaukee, Wisconsin. The school was established in 1893 and is the largest research center in eastern Wisconsin ...
study found small-overlap collisions result in increased head, chest, spine, hip, and pelvis injuries. This sort of collision is common on two-lane roads with two-way traffic where a center median is absent. Single vehicle crashes (into a tree or a pole) account for 40% of small-overlap crashes. According to the IIHS, 25% of frontal crash deaths are due to small overlap crashes, with the outer front wheel first to receive the impact forces rather than the more central crash absorbing structure. The IIHS has since tested family cars, compact cars, minicars, small and midsized SUVs, minivans, muscle cars and large pickup trucks through the small-overlap test. In 2017, the IIHS began conducting this test on the passenger side of vehicles.


Side impact test

The IIHS began conducting the side impact test in 2003. In this test, the test vehicle remains stationary while a four-wheeled sled, with a deformable barrier attached, strikes the side of the vehicle at . This test is used to simulate the impact of a high-riding pickup or SUV on the subject vehicle. In 2019, the IIHS began modifying the test by using a heavier sled, changing the barrier design, and increasing the impact speed from 31 to . The IIHS cited the current test being unrealistic as the main reason for the modification. This modified side test officially began in 2021. Out of 20 small SUVs tested in the new, tougher side impact tests, only one received a Good rating.In May 2022, the IIHS officially completed its test for the tougher, side crash test on 18 midsize SUVs. Ten midsize SUVs earned good ratings, two more with Acceptable ratings, and 6 with marginal overall ratings.


Roof strength test

In the United States rollovers accounted for nearly 25% of passenger vehicle fatalities. Features such as electronic stability control are proven to significantly reduce rollovers and
lane departure warning system In road-transport terminology, a lane departure warning system (LDWS) is a mechanism designed to warn the driver when the vehicle begins to move out of its lane (unless a turn signal is on in that direction) on freeways and arterial roads. These ...
s may also help. Rollover sensing
side curtain airbag An airbag is a vehicle occupant-restraint system using a bag designed to inflate extremely quickly, then quickly deflate during a collision. It consists of the airbag cushion, a flexible fabric bag, an inflation module, and an impact sensor. Th ...
s also help to minimize injuries in the event of a rollover. In the test, which was introduced in 2009, the vehicle rests on a platform while an angled metal hydraulic plate pushes on its roof, in the area just above the windows. In order to get the highest rating, the vehicle must withstand a force equivalent to at least four times its
curb weight Vehicle weight is a measurement of wheeled motor vehicles; either an actual measured weight of the vehicle under defined conditions or a gross weight rating for its weight carrying capacity. Curb or kerb weight Curb weight (U.S. English) or kerb ...
before collapsing .


50th Anniversary crash test

In 2009, the IIHS celebrated its 50th anniversary. To illustrate how much automotive safety has progressed in five decades, IIHS tested a 1959
Chevrolet Bel Air The Chevrolet Bel Air is a full-size car produced by Chevrolet for the 1950–1975 model years. Initially, only the two-door hardtops in the Chevrolet model range were designated with the Bel Air name from 1950 to 1952. With the 1953 model year, ...
crashing head-on, 40% offset with a 2009
Chevrolet Malibu The Chevrolet Malibu is a mid-size car manufactured and marketed by Chevrolet from 1964 to 1983 and again since 1997. The Malibu began as a trim-level of the Chevrolet Chevelle, becoming its own model line in 1978. Originally a rear-wheel-dr ...
at 40 mph. It put the video of the crash on the Internet and "the results were no surprise to anyone with a passing familiarity with cars." The Bel Air's occupant compartment was extensively damaged by the crash. Coupled with the car's lack of modern safety features such as airbags and
seat belts A seat belt (also known as a safety belt, or spelled seatbelt) is a vehicle safety device designed to secure the driver or a passenger of a vehicle against harmful movement that may result during a collision or a sudden stop. A seat belt red ...
, this resulted in the crash test dummy in the Bel Air recording forces that would have probably caused fatal injuries to a real driver. They "would not only hit the inside of the car and experience a large (and damaging acceleration) but the car would smash you on the inside." Sophisticated engineering and high-strength steel give modern vehicles a huge advantage.


Head restraint evaluation

This tests the vehicle's driver seat to determine effectiveness of the head restraints. The driver's seat is placed on a sled to mimic rear-end collisions at 20 mph. Rear-end collisions at low to moderate speeds typically do not result in serious injuries but they are common. In 2005 the IIHS estimated 25% of medical costs were related to whiplash injuries.


Frontal collision avoidance evaluation


Vehicle-to-vehicle

In this test, an engineer drives the test car toward a rolling, cushioned box, which is used to simulate an actual car. The ratings, "basic", "advanced", and "superior", are awarded depending on whether the front crash prevention system meets government criteria, and if the system can reduce the speed or avoid the collision at both 12 and 25 mph (19 and 40. km/h).


Vehicle-to-pedestrian

The IIHS runs this test in three different scenarios, each scenario having two different speeds for the tested vehicle. * 1st scenario: A tall adult pedestrian walks perpendicular to oncoming traffic, and the tested vehicle must successfully autobrake enough to avoid hitting the pedestrian at . * 2nd scenario: A tall child (average height of a 7-year-old child) darts out from behind two parked vehicles (the one closer to the child is a sedan, and the farther is an SUV), and the tested vehicle must successfully autobrake enough to avoid hitting the dart-out child at . * 3rd scenario: The same tall adult pedestrian walks parallel to traffic, and the tested vehicle must successfully autobrake enough to avoid hitting the pedestrian at .


Headlight evaluation

In March 2016, the IIHS released ratings for headlight performance. Their first test involved family cars, and most earned marginal or poor ratings. Only one vehicle, the
Toyota Prius V The Toyota Prius ''v'' (for versatile), also named Prius α (pronounced as Alpha) in Japan, and Prius+ in Europe and Singapore, is a hybrid gasoline-electric automobile produced by Toyota introduced in Japan in May 2011, in the U.S. in October 2 ...
, earned a good rating when equipped with specific headlights. The Institute evaluated headlights for small SUVs 4 months later, and none of the vehicles tested earn a good rating. In October 2016, they released ratings for pickup trucks, and the
Honda Ridgeline The Honda Ridgeline is a midsize pickup truck manufactured by Honda. The Ridgeline is the only pickup truck currently produced by Honda. The Ridgeline is built using a unibody frame, a transverse-mounted engine, and is only offered in a crew–cab ...
was the only pickup to earn a good rating on the headlights test when equipped with specific headlights.


Awards

The Top Safety Pick or TSP is an annual award to the best-performing cars of the year. To receive a ''Top Safety Pick'', the vehicle must receive "Good" overall marks in the moderate overlap front, driver-side small overlap front, passenger-side small overlap front, side, roof strength and seat/head restraint tests. Vehicles must also be available with headlights rated good or acceptable on at least one trim, and a front crash prevention system rated advanced or superior. The Top Safety Pick+ award is given to vehicles that meet all the criteria for a ''Top Safety Pick,'' but have good or acceptable headlights across all trims.


In the media

After a small segment on ''
MotorWeek ''MotorWeek'' is an automotive news and information program focused on car road tests, previews, and maintenance tips. The program is produced by Maryland Public Television for PBS and also airs on the commercial cable/satellite channel MAVTV. ...
'91'' in which former president Brian O'Neill demonstrated the institute's bumper crash testing system, the IIHS began to receive national media coverage. When the IIHS began its moderate overlap frontal test program in 1995, ''
Dateline NBC ''Dateline NBC'' is a weekly American television news magazine/reality legal show that is broadcast on NBC. It was previously the network's flagship general interest news magazine, but now focuses mainly on true crime stories with only occasio ...
'' correspondent Lea Thompson was invited to watch its crash tests, and segments about the institute's crash test programs became a regular feature on ''Dateline'' throughout the mid-1990s and 2000s. Other IIHS tests were later covered, including bumper crash tests, side-impact crash tests, and head restraint evaluation tests. Some of these segments are credited for pushing automakers into designing safer cars, such as when the IIHS tested the 1997-2005
GM U platform The U-platform (or U-body) is a front wheel drive minivan and crossover SUV platform from General Motors produced since 1990. North American sales ended in 2009, but Chinese production continues. The minivans were divided into three generations, ...
minivans. They were named the worst performing vehicles it had ever tested, with potentially fatal injuries for the driver. Their successors, offered from 2005 to 2009, were markedly improved, and received a "Good" rating from the institute. The 1997-2003
Ford F-150 The Ford F-Series is a series of light-duty trucks marketed and manufactured by Ford since the 1948 model year. Slotted above the Ford Ranger in the Ford truck model range, the F-Series is marketed as a range of full-sized pickup trucks. ...
was later named the 2nd worst performing vehicle, also with potentially fatal injuries for the driver. The redesigned 2004 Ford F-150 received a "Good" rating from the institute. When Brian O'Neill stepped down as IIHS president in 2006, the IIHS segments were much shorter, and less frequent, until they ended around late-2006, when correspondent Lea Thompson left ''Dateline NBC.'' Many of these ''Dateline'' segments are available to watch on
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.


See also

*
BeSeatSmart Child Passenger Safety Program The BeSeatSmart Program is a federal grant-based program supported by the Governor's Highway Safety Program, Vermont, and hosted by The Vermont Department of Health. BeSeatSmart provides child passenger safety seats, hands on help, advice, consu ...
*
Head injury criterion The head injury criterion (HIC) is a measure of the likelihood of head injury arising from an impact. The HIC can be used to assess safety related to vehicles, personal protective gear, and sport equipment. Normally the variable is derived from t ...
*
National Highway Traffic Safety Administration The National Highway Traffic Safety Administration (NHTSA ) is an agency of the U.S. federal government, part of the Department of Transportation. It describes its mission as "Save lives, prevent injuries, reduce vehicle-related crashes" rel ...


References


External links

* {{Authority control Automotive safety New Car Assessment Programs Non-profit organizations based in Arlington, Virginia Road safety organizations