Head Injury Criterion. The Head Injury Criterion (HIC) is a measure of the likelihood of an injury arising from an accident such as a vehicle crash. At an HIC of 1000, one in six people will suffer a life-threatening injury to the brain. The Insurance Institute for Highway Safety performs safety rating tests on vehicles. One of the variables measured is the HIC. The following data provide the HIC levels for a sample of small SUVs.

493 127 95 101 283 82 147 358 81 158 102 196