A new web video from the Insurance Institute for Highway Safety shows how engineers use a special machine to crush vehicle roofs in order to measure their strength.

"Inside IIHS: Measuring roof strength" also explains how strong roofs help preserve occupant space and prevent people from being ejected during rollover crashes.

The video is available on the IIHS YouTube channel and is the third in the "Inside IIHS" series. The first two focused on crash test dummies and frontal crash testing. 

Originally posted on Automotive Fleet