In the test the strength of the roof is determined by pushing an angled metal plate down on one side of the roof at a slow but constant speed and measuring the force required to crush the roof.
Iihs roof strength test.
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 protocol version iii supporting documents for the insurance institute for highway safety iihs roof strength program are available from the technical protocols section of the iihs website.
In order to earn a good rating a vehicle s roof must withstand a.
The iihs roof strength crash test is conducted by pushing a metal plate at constant speed against one side of a vehicle s roof.
The force applied relative to the vehicle s weight is known as the strength to weight ratio.
This rating only applies to the specific seat head restraint combination tested indicated on the.
The insurance institute for highway safety iihs is.