Roof Strength Test

This rating only applies to the specific seat head restraint combination tested indicated on the.

Roof strength test.

The model years of the tested vehicles ranged from 1997. 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 order to earn a good rating a vehicle s roof must withstand a. 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.

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. 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. Roof strength the measure of roof strength was obtained from nhtsa s office of vehicle safety research roof crush test data. The plate normally crushes at a rate of about 1 8 inch per second.

The playback speed of this video has been increased. Iihs news release march 24 2009 roof strength is focus of new rating system. 4 of 12 small suvs evaluated earn top marks arlington va the insurance ins.