I have looked at 531 IIHS moderate overlap frontal offset tests, and put the injury data into a calculator that puts out the risk of AIS 3+ injury, as based on NHTSA's 2011-present frontal rating calculation. While the better the IIHS rating meant on average a lower injury risk, the NHTSA crash test injury formula was not designed specifically for the IIHS test.
Sometimes, the formula can provide useful information. For instance, vehicles that had no problems (all six factors rated Good) had injury risks from 7.1% to 26.0%. In these instances, the lower the injury risk, the less likely injuries will probably be and the fewer people will probably get them. Keep in mind that these injury risks are strictly for head, neck, chest, and femurs; pretty much everything except for lower legs.
Sometimes, the formula can provide useful information. For instance, vehicles that had no problems (all six factors rated Good) had injury risks from 7.1% to 26.0%. In these instances, the lower the injury risk, the less likely injuries will probably be and the fewer people will probably get them. Keep in mind that these injury risks are strictly for head, neck, chest, and femurs; pretty much everything except for lower legs.
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