Roof Strength Test

The iihs roof strength crash test is conducted by pushing a metal plate at constant speed against one side of a vehicle s roof. In this test of the 2010 buick lacrosse the peak force is 19 571 pounds for a strength to weight ratio of 4 90 and a good rating. The head restraints seats rating is based on a sled test of the vehicle s seat and head restraint.

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The roof strength rating is based on a test in which a metal plate is pushed against one side of the vehicle s roof at a slow constant speed.

Roof strength test.

Roof crush testing of one side of the vehicle one sided testing was performed from april 2001 through march 2008 on 75 passenger vehicles. 4 of 12 small suvs evaluated earn top marks arlington va the insurance ins. The following video shows how the roof strength test is conducted. Roof strength the measure of roof strength was obtained from nhtsa s office of vehicle safety research roof crush test data.

This rating only applies to the specific seat head restraint combination tested indicated on the. The plate normally crushes at a rate of about 1 8 inch per second. The inside iihs series of videos offers a behind the scenes glimpse of the work of the insurance institute for highway safety s vehicle research center. Iihs news release march 24 2009 roof strength is focus of new rating system.

The model years of the tested vehicles ranged from 1997. In order to earn a good rating a vehicle s roof must withstand a. The playback speed of this video has been increased.

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